{"id":1464,"date":"2019-01-22T14:56:13","date_gmt":"2019-01-22T13:56:13","guid":{"rendered":"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/"},"modified":"2019-01-22T14:56:13","modified_gmt":"2019-01-22T13:56:13","slug":"physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials","status":"publish","type":"events","link":"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/","title":{"rendered":"Physics Colloquium: Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials"},"content":{"rendered":"

Abtract:Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials <\/strong><\/p>

Dr Julie Karel \/ Department of Materials Science and Engineering, Monash University, Clayton, Victoria, Australia<\/p>

Many research efforts in condensed matter physics and materials science are directed towards developing methods to modify or realize novel materials properties.\u00a0 Some effective tools for doing this include introduction of disorder and application of electric fields; I will highlight examples of these from my own work during this talk.\u00a0 First, I will show that application of an electric field through a liquid electrolyte gate produces significant, non-volatile and reversible modifications in the electronic structure of transition metal oxides.\u00a0 More specifically, I will explain the origin of the low temperature metallicity in VO2 and WO3 thin films after liquid electrolyte gating and offer perspectives for this technique to initiate seemingly contradictory materials properties such as a polar metal. The second part of the talk will demonstrate that disorder can be used to effectively tune the magnetic and electronic properties in FexSi1-x and Fe1-yCoySi thin films; amorphous thin films exhibit an enhanced magnetic moment, enhanced spin polarization and large anomalous Hall effect in comparison to the crystalline material with the same composition. The talk will focus in particular on understanding the origin of the large AHE, which will be shown to depend primarily on the intrinsic mechanism (e.g. an electronic structure effect). This result is surprising because it indicates a local atomic level description of a Berry phase in a system that lacks lattice periodicity.\u00a0 Finally, I will discuss potential applications for amorphous materials in emerging electronic and spintronic devices.\u00a0<\/p>

About the speaker<\/p>

Dr. Julie Karel earned her B.S in Materials Science and Engineering (MSE) from the University of Wisconsin \u2013 Madison (2005).\u00a0 From 2005-2007, Julie worked as a Materials Engineer for Intel Corporation in Santa Clara, CA and Chandler, AZ.\u00a0 Dr. Karel then obtained her M.S. (2010) and PhD (2012) also in MSE from the University of California \u2013 Berkeley.\u00a0 Her postdoctoral research was carried out at the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany (2012-2016). \u00a0Julie started as a research fellow at Monash University in late 2016 and has been a Lecturer in Materials Science and Engineering since 2018.<\/p><\/div><\/section>","protected":false},"excerpt":{"rendered":"

Abtract:Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials Dr Julie Karel \/ Department of Materials Science and Engineering, Monash University, Clayton, Victoria, AustraliaMany research efforts in condensed matter physics and materials science are directed towards developing methods to modify or realize novel materials properties.\u00a0 Some effective tools for doing this include introduction of disorder and application of electric fields; I will highlight examples of these from my own work during this talk.\u00a0 First, I will show that application of an electric field through a liquid electrolyte gate produces significant, non-volatile and reversible modifications in the electronic structure of transition metal oxides.\u00a0 More specifically, I will explain the origin of the low temperature metallicity in VO2 and WO3 thin films after liquid electrolyte gating and offer perspectives for this technique to initiate seemingly contradictory materials properties such as a polar metal. The second part of the talk will demonstrate that disorder can be used to effectively tune the magnetic and electronic properties in FexSi1-x and Fe1-yCoySi thin films; amorphous thin films exhibit an enhanced magnetic moment, enhanced spin polarization and large anomalous Hall effect in comparison to the crystalline material with the same composition. The talk will focus in particular on understanding the origin of the large AHE, which will be shown to depend primarily on the intrinsic mechanism (e.g. an electronic structure effect). This result is surprising because it indicates a local atomic level description of a Berry phase in a system that lacks lattice periodicity.\u00a0 Finally, I will discuss potential applications for amorphous materials in emerging electronic and spintronic devices.\u00a0About the speakerDr. Julie Karel earned her B.S in Materials Science and Engineering (MSE) from the University of Wisconsin \u2013 Madison (2005).\u00a0 From 2005-2007, Julie worked as a Materials Engineer for Intel Corporation in Santa Clara, CA and Chandler, AZ.\u00a0 Dr. Karel then obtained her M.S. (2010) and PhD (2012) also in MSE from the University of California \u2013 Berkeley.\u00a0 Her postdoctoral research was carried out at the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany (2012-2016). \u00a0Julie started as a research fellow at Monash University in late 2016 and has been a Lecturer in Materials Science and Engineering since 2018.<\/p>\n","protected":false},"author":0,"featured_media":1465,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"featured_image_focal_point":[],"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"","uluxPrePostTitle":"","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"event_start_date":"2019-03-22 16:00:00","event_end_date":"2019-03-22 18:00:00","event_speaker_name":"Dr Julie Karel invited by RU PHYMS","event_speaker_link":"","event_is_online":false,"event_location":"BSC 1.03","event_street":"Campus Limpertsberg","event_location_link":"","event_zip_code":"","event_city":"","event_country":"LU"},"events-topic":[310],"events-type":[],"organisation":[75],"authorship":[],"acf":[],"yoast_head":"\nPhysics Colloquium: Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials - FSTM I Uni.lu<\/title>\n<meta name=\"description\" content=\"Abtract:Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials Dr Julie Karel \/ Department of Materials Science and Engineering, Monash University, Clayton, Victoria, AustraliaMany research efforts in condensed matter physics and materials science are directed towards developing methods to modify or realize novel materials properties.\u00a0 Some effective tools for doing this include introduction of disorder and application of electric fields; I will highlight examples of these from my own work during this talk.\u00a0 First, I will show that application of an electric field through a liquid electrolyte gate produces significant, non-volatile and reversible modifications in the electronic structure of transition metal oxides.\u00a0 More specifically, I will explain the origin of the low temperature metallicity in VO2 and WO3 thin films after liquid electrolyte gating and offer perspectives for this technique to initiate seemingly contradictory materials properties such as a polar metal. The second part of the talk will demonstrate that disorder can be used to effectively tune the magnetic and electronic properties in FexSi1-x and Fe1-yCoySi thin films; amorphous thin films exhibit an enhanced magnetic moment, enhanced spin polarization and large anomalous Hall effect in comparison to the crystalline material with the same composition. The talk will focus in particular on understanding the origin of the large AHE, which will be shown to depend primarily on the intrinsic mechanism (e.g. an electronic structure effect). This result is surprising because it indicates a local atomic level description of a Berry phase in a system that lacks lattice periodicity.\u00a0 Finally, I will discuss potential applications for amorphous materials in emerging electronic and spintronic devices.\u00a0About the speakerDr. Julie Karel earned her B.S in Materials Science and Engineering (MSE) from the University of Wisconsin \u2013 Madison (2005).\u00a0 From 2005-2007, Julie worked as a Materials Engineer for Intel Corporation in Santa Clara, CA and Chandler, AZ.\u00a0 Dr. Karel then obtained her M.S. (2010) and PhD (2012) also in MSE from the University of California \u2013 Berkeley.\u00a0 Her postdoctoral research was carried out at the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany (2012-2016). \u00a0Julie started as a research fellow at Monash University in late 2016 and has been a Lecturer in Materials Science and Engineering since 2018.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Physics Colloquium: Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials\" \/>\n<meta property=\"og:description\" content=\"Abtract:Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials Dr Julie Karel \/ Department of Materials Science and Engineering, Monash University, Clayton, Victoria, AustraliaMany research efforts in condensed matter physics and materials science are directed towards developing methods to modify or realize novel materials properties.\u00a0 Some effective tools for doing this include introduction of disorder and application of electric fields; I will highlight examples of these from my own work during this talk.\u00a0 First, I will show that application of an electric field through a liquid electrolyte gate produces significant, non-volatile and reversible modifications in the electronic structure of transition metal oxides.\u00a0 More specifically, I will explain the origin of the low temperature metallicity in VO2 and WO3 thin films after liquid electrolyte gating and offer perspectives for this technique to initiate seemingly contradictory materials properties such as a polar metal. 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This result is surprising because it indicates a local atomic level description of a Berry phase in a system that lacks lattice periodicity.\u00a0 Finally, I will discuss potential applications for amorphous materials in emerging electronic and spintronic devices.\u00a0About the speakerDr. Julie Karel earned her B.S in Materials Science and Engineering (MSE) from the University of Wisconsin \u2013 Madison (2005).\u00a0 From 2005-2007, Julie worked as a Materials Engineer for Intel Corporation in Santa Clara, CA and Chandler, AZ.\u00a0 Dr. Karel then obtained her M.S. (2010) and PhD (2012) also in MSE from the University of California \u2013 Berkeley.\u00a0 Her postdoctoral research was carried out at the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany (2012-2016). \u00a0Julie started as a research fellow at Monash University in late 2016 and has been a Lecturer in Materials Science and Engineering since 2018.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/\" \/>\n<meta property=\"og:site_name\" content=\"FSTM FR\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/fstm.uni.lu\/\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/20\/2026\/03\/03111744\/FSTM_SM-Profile_1600x1600px-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"2560\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/\",\"url\":\"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/\",\"name\":\"Physics Colloquium: Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials - FSTM I Uni.lu\",\"isPartOf\":{\"@id\":\"https:\/\/www.uni.lu\/fstm-fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/20\/2019\/01\/default-7.jpg\",\"datePublished\":\"2019-01-22T13:56:13+00:00\",\"dateModified\":\"2019-01-22T13:56:13+00:00\",\"description\":\"Abtract:Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials Dr Julie Karel \/ Department of Materials Science and Engineering, Monash University, Clayton, Victoria, AustraliaMany research efforts in condensed matter physics and materials science are directed towards developing methods to modify or realize novel materials properties.\u00a0 Some effective tools for doing this include introduction of disorder and application of electric fields; I will highlight examples of these from my own work during this talk.\u00a0 First, I will show that application of an electric field through a liquid electrolyte gate produces significant, non-volatile and reversible modifications in the electronic structure of transition metal oxides.\u00a0 More specifically, I will explain the origin of the low temperature metallicity in VO2 and WO3 thin films after liquid electrolyte gating and offer perspectives for this technique to initiate seemingly contradictory materials properties such as a polar metal. 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I will highlight examples of these from my own work during this talk.\u00a0 First, I will show that application of an electric field through a liquid electrolyte gate produces significant, non-volatile and reversible modifications in the electronic structure of transition metal oxides.\u00a0 More specifically, I will explain the origin of the low temperature metallicity in VO2 and WO3 thin films after liquid electrolyte gating and offer perspectives for this technique to initiate seemingly contradictory materials properties such as a polar metal. 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This result is surprising because it indicates a local atomic level description of a Berry phase in a system that lacks lattice periodicity.\u00a0 Finally, I will discuss potential applications for amorphous materials in emerging electronic and spintronic devices.\u00a0About the speakerDr. Julie Karel earned her B.S in Materials Science and Engineering (MSE) from the University of Wisconsin \u2013 Madison (2005).\u00a0 From 2005-2007, Julie worked as a Materials Engineer for Intel Corporation in Santa Clara, CA and Chandler, AZ.\u00a0 Dr. Karel then obtained her M.S. 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This result is surprising because it indicates a local atomic level description of a Berry phase in a system that lacks lattice periodicity.\u00a0 Finally, I will discuss potential applications for amorphous materials in emerging electronic and spintronic devices.\u00a0About the speakerDr. Julie Karel earned her B.S in Materials Science and Engineering (MSE) from the University of Wisconsin \u2013 Madison (2005).\u00a0 From 2005-2007, Julie worked as a Materials Engineer for Intel Corporation in Santa Clara, CA and Chandler, AZ.\u00a0 Dr. Karel then obtained her M.S. 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The second part of the talk will demonstrate that disorder can be used to effectively tune the magnetic and electronic properties in FexSi1-x and Fe1-yCoySi thin films; amorphous thin films exhibit an enhanced magnetic moment, enhanced spin polarization and large anomalous Hall effect in comparison to the crystalline material with the same composition. The talk will focus in particular on understanding the origin of the large AHE, which will be shown to depend primarily on the intrinsic mechanism (e.g. an electronic structure effect). This result is surprising because it indicates a local atomic level description of a Berry phase in a system that lacks lattice periodicity.\u00a0 Finally, I will discuss potential applications for amorphous materials in emerging electronic and spintronic devices.\u00a0About the speakerDr. Julie Karel earned her B.S in Materials Science and Engineering (MSE) from the University of Wisconsin \u2013 Madison (2005).\u00a0 From 2005-2007, Julie worked as a Materials Engineer for Intel Corporation in Santa Clara, CA and Chandler, AZ.\u00a0 Dr. Karel then obtained her M.S. (2010) and PhD (2012) also in MSE from the University of California \u2013 Berkeley.\u00a0 Her postdoctoral research was carried out at the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany (2012-2016). \u00a0Julie started as a research fellow at Monash University in late 2016 and has been a Lecturer in Materials Science and Engineering since 2018.","breadcrumb":{"@id":"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/#primaryimage","url":"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/20\/2019\/01\/default-7.jpg","contentUrl":"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/20\/2019\/01\/default-7.jpg","width":1500,"height":1125},{"@type":"BreadcrumbList","@id":"https:\/\/www.uni.lu\/fstm-fr\/events\/physics-colloquium-using-disorder-or-liquid-electrolyte-gating-to-design-and-control-magnetic-and-electronic-properties-of-materials\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.uni.lu\/fr"},{"@type":"ListItem","position":2,"name":"Facult\u00e9 des Sciences, des Technologies et de M\u00e9decine","item":"https:\/\/www.uni.lu\/fstm-fr\/"},{"@type":"ListItem","position":3,"name":"Events","item":"https:\/\/www.uni.lu\/fstm-fr\/events\/"},{"@type":"ListItem","position":4,"name":"Physics Colloquium: Using Disorder or Liquid Electrolyte Gating to Design and Control Magnetic and Electronic Properties of Materials"}]},{"@type":"WebSite","@id":"https:\/\/www.uni.lu\/fstm-fr\/#website","url":"https:\/\/www.uni.lu\/fstm-fr\/","name":"FSTM","description":"Facult\u00e9 des Sciences, des Technologies et de M\u00e9decine I Uni.lu","publisher":{"@id":"https:\/\/www.uni.lu\/fstm-fr\/#organization"},"alternateName":"Facult\u00e9 des Sciences, des Technologies et de M\u00e9decine I Universit\u00e9 du Luxembourg","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.uni.lu\/fstm-fr\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.uni.lu\/fstm-fr\/#organization","name":"FSTM - Universit\u00e9 du Luxembourg I Uni.lu","alternateName":"Facult\u00e9 des Sciences, des Technologies et de M\u00e9decine","url":"https:\/\/www.uni.lu\/fstm-fr\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.uni.lu\/fstm-fr\/#\/schema\/logo\/image\/","url":"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/20\/2026\/03\/03111744\/FSTM_SM-Profile_1600x1600px-scaled.jpg","contentUrl":"https:\/\/www.uni.lu\/wp-content\/uploads\/sites\/20\/2026\/03\/03111744\/FSTM_SM-Profile_1600x1600px-scaled.jpg","width":2560,"height":2560,"caption":"FSTM - Universit\u00e9 du Luxembourg I Uni.lu"},"image":{"@id":"https:\/\/www.uni.lu\/fstm-fr\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/fstm.uni.lu\/","https:\/\/www.linkedin.com\/showcase\/fstm-uni-lu"]}]}},"_links":{"self":[{"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/events\/1464"}],"collection":[{"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/events"}],"about":[{"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/types\/events"}],"replies":[{"embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/comments?post=1464"}],"version-history":[{"count":0,"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/events\/1464\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/media\/1465"}],"wp:attachment":[{"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/media?parent=1464"}],"wp:term":[{"taxonomy":"events-topic","embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/events-topic?post=1464"},{"taxonomy":"events-type","embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/events-type?post=1464"},{"taxonomy":"organisation","embeddable":true,"href":"https:\/\/www.uni.lu\/fstm-fr\/wp-json\/wp\/v2\/organisation?post=1464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}