{"688660":{"#nid":"688660","#data":{"type":"event","title":"PhD Defense by Fatemeh Borhani","body":[{"value":"\u003Cp\u003EIn partial fulfillment of the requirements for the degree of\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EDoctor of Philosophy in\u0026nbsp;Physics\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ESchool of Physics\u0026nbsp;Thesis Dissertation Defense\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EFatemeh Borhani\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Itamar Kimchi, School of Physics, Georgia Institute of Technology (Advisor)\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EEmergence of Chirality from Crystalline Defects in Kitaev Spin Liquids\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDate: Friday, March 6, 2026\u003C\/p\u003E\u003Cp\u003ETime: 8:30 a.m.\u003C\/p\u003E\u003Cp\u003ELocation: Howey N110\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee members:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Dragomir Davidovic,\u0026nbsp;School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr. Martin Mourigal, School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr. Zhigang Zhang, School of Physics, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003EDr. Joshua Kretchmer, School of Chemistry and Biochemistry, Georgia Institute of Technology\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EWe study the spin-1\/2 Kitaev honeycomb gapless spin liquid in the presence of various defects that create odd-sided plaquettes, including topological dislocations and Stone-Wales\u2013type local lattice defects. These defects induce local chirality and orbital magnetization. While the clean Kitaev model exhibits no finite-temperature phase transitions, a finite defect density leads to a genuine phase transition, with a transition temperature that scales with the defect density. This disorder-driven instability arises from an emergent long-range ferromagnetic interaction, r^\u03b3\u0026nbsp;(\u03b3\u22482.7), between defect-induced chiralities, mediated by the nearly gapless Majorana fermions.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EEmergence of Chirality from Crystalline Defects in Kitaev Spin Liquids\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Emergence of Chirality from Crystalline Defects in Kitaev Spin Liquids"}],"uid":"27707","created_gmt":"2026-03-03 18:30:54","changed_gmt":"2026-03-03 18:31:32","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2026-03-06T08:30:00-05:00","event_time_end":"2026-03-06T10:30:00-05:00","event_time_end_last":"2026-03-06T10:30:00-05:00","gmt_time_start":"2026-03-06 13:30:00","gmt_time_end":"2026-03-06 15:30:00","gmt_time_end_last":"2026-03-06 15:30:00","rrule":null,"timezone":"America\/New_York"},"location":"Howey N110 ","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}