logo

korean english

게시판

Home > 게시판 > 세미나

아래와 같이 세미나를 개최하오니 많이 참석해 주시기 바랍니다.

 

아 래

   

제목: Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena

 

연사: 김 기석 교수님 (포항공대)

 

일시: 2013. 12. 30(월) 오전 10:00

 

장소: 제1과학관 2층 라운지세미나실

 

 

초록: Dirac metals (gapless semi-conductors) are believed to turn into Weyl metals when perturbations, which break either time reversal symmetry or inversion symmetry, are employed. However, no experimental evidence has been reported for the existence of Weyl fermions in three dimensions. Applying magnetic fields near the topological phase transition from a topological insulator to a band insulator in Bi1-xSbx, we observe not only the weak anti-localization phenomenon in magnetoconductivity near zero magnetic fields (B < 0.4 T) but also its upturn above 0.4 T only for E // B. This “incompatible” coexistence between weak anti-localization and “negative” magnetoresistivity is attributed to the Adler-Bell-Jackiw anomaly (“topological” E dot B term) in the presence of weak anti-localization corrections.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1091265
142 <6/25(화)>물리학과 특별세미나 개최 안내 2013.06.24 165965
141 <7/25(목) 오전11시> 물리학과 특별세미나 개최 안내 2013.07.19 142835
140 <8/20> Radioprotection effect and anti-tumor immunity by TCM-EF in mice 2013.08.21 193521
139 <8/21(수)> 고온 초전도 특별세미나 2013.08.21 79760
138 <10/28> Magneto-electric response of multiferroic chiral magnets 2013.10.21 76477
137 <11/4 오전 10:30> Quantum transport through topological-metal strip 2013.10.23 92459
136 <11/4 오후 3:30> Surface impurity induced self energy in bulk on a topological insulator 2013.10.23 97382
135 <11/5(화)> 특별세미나 개최 안내 2013.11.01 234772
134 <11/11> Revealing magnetism of nanoislands with quantitative insights into spin-polarized scanning tunneling spectroscopy 2013.11.05 101974
» <12/30> Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena 2013.12.16 136269
132 <12/26> Emergent Physics in 3D Correlated Topological Semimetals file 2013.12.20 157956
131 <12/30> Correlation between Raman scattering and conductance in a molecular junction 2013.12.23 72722
130 <1/2> MYRRHA Project (EU 4세대 원전 사업) 2013.12.30 63940
129 <3/28> A global financial settlement network and its cascading effects 2014.03.26 61465
128 <4/18(금)> 양자물질초전도체창의연구소 초청 세미나 2014.04.15 189249
127 <4/21(월) 오후 2시> Optical properties of iron-based conductors and superconductors 2014.04.15 78343
126 <5/12(월)> Nanoscale probing of electrochemical phenomena and ionic dynamics by scanning probe microscopy 2014.05.07 102035
125 <5/30(금)> 입자물리이론 그룹 미니 워크숍 개최 안내 2014.05.29 109347
124 <7/21(월)> The rapid neutron capture nucleosynthesis: A hot topic in the Nuclear Astrophysics study 2014.07.15 130661
123 <9/11(목)> The effects of dark matter elastic scattering on the cosmological signals 2014.09.01 68520