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 1088957
180 <8/7> Scotch tape and spectroscopy: probing and manipulating the surface of a topological insulator 2012.07.27 93975
179 <2/15> Geometric distance-dependent percolations in networks on two-dimensional planes 2011.02.11 93484
178 <8/30(Fri) 16:00 ~ >Structures of light neutron-rich nuclei, 17,19C 2019.08.22 93046
177 <2/17(Mon.)> Magneto-optical study of the Dirac semimetal Cd3As2 in Voigt geometry 2020.02.11 92693
176 <4/2> Supersymmetric vacua of mass-deformed M2-brane theory 2010.03.29 92689
175 <6/19> Kohn's theorem and non-relativistic symmetry 2012.06.15 92519
174 <June 30(Wed.)>Mapping of magnetic anisotropy for van der Waals materials 2021.06.25 92472
173 <5/22> 정상욱 교수 초청 세미나 Overview of Multiferroics 2006.05.19 92341
172 <6/21> Nuclear Astrophysics in Effective Field Theories 2012.06.20 92222
171 <8/17> Is Quantum Criticality a Key to Unconventional Superconductivity? 2006.08.09 92169
170 <8/7> Scotch tape and spectroscopy: probing and manipulating the surface of a topological insulator 2012.07.27 92113
169 <11/4 오전 10:30> Quantum transport through topological-metal strip 2013.10.23 92056
168 <6/10> Traffic Problem in Physics and Its Application 2008.06.10 91875
167 <2/15> Perturbation during Inflation 2011.02.11 91666
166 <3/26>A perturbative & non-perturbative test of ABJM model 2009.03.19 91662
165 <10/1(Tue.) Mini-Workshop on BSM Physics with Neutrino Detectors 2019.09.30 91303
164 <1/14>Dark Matter signals from PAMELA and ATIC 2009.01.12 90966
163 <2/16>Hamiltonian formalism 2011.02.11 90700
162 <10/8 (월)>물리학과 특별세미나 개최 안내 2012.10.05 90637
161 <3/13(금) pm1:00> 초청세미나 개최 안내 2015.03.09 90614