logo

korean english

게시판

Home > 게시판 > 세미나

아래와 같이 세미나를 개최하오니 많이 참석해 주시기 바랍니다.

 

                    아       래

 

제목: Time-reversal anomaly in Josephson effect involving Majorana fermions
 

연사: 정  석  범 박사님 (UC Berkeley)
 

일시: 2012. 9. 20(목) 오전 11시

 

장소: 2nd floor, lounge room  (Bldg. #31)

 
초록: The Majorana surface state is a protected feature in a class of
superconductor known as 'topological superconductors'. In this paper,
we study the Josephson coupling between time-reversal invariant
topological superconductors and s-wave superconductors. The Majorana
surface states of time-reversal invariant topological superconductors
in all physical dimensions have a generic topological property which
we named as time-reversal anomaly. Due to the time-reversal anomaly,
the Josephson coupling prefers a nonzero phase difference between
topological and trivial superconductors. The nontrivial Josesphon
coupling leads to a half period Josephson oscillation for a small
enough DC voltage bias, which, however, reverts to the ordinary
Josephson oscillation under an in-plane magnetic field. This provides
an experimental signature of Majorana fermions in a time-reversal
invariant superconductor. 



번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1079064
15 <8/20> Radioprotection effect and anti-tumor immunity by TCM-EF in mice 2013.08.21 178005
14 <Feb.18(Thu.)> Hund's metallicity in the vicinity of a Van Hove singularity / Correlated topological phases in strongly correlated heterostructures 2021.02.16 178988
13 <4/18(금)> 양자물질초전도체창의연구소 초청 세미나 2014.04.15 180129
12 <12/20(Thu) 2:00pm> Gravitating Spinning Stars (a particle theorist's perspective) 2018.12.17 183941
11 <11/21> Cosmological viable scalar-tensor theories of gravity 2012.11.16 198926
» <9/20> Time-reversal anomaly in Josephson effect involving Majorana fermions 2012.09.20 205294
9 <5/16(토)> 세미나 개최 안내 2015.05.18 217230
8 <11/5(화)> 특별세미나 개최 안내 2013.11.01 230248
7 <Jan.14(Thu.)>Oxygen sponge effects for epitaxial manganite thin film design 2021.01.11 236075
6 <8/30(Wed.)10:30>​Technology convergence and applications of Large-Area Electronics, e-Textiles, bio-sensors and bio-electronics 2017.08.29 244205
5 <12/21> Special Seminar by Professor Ilya Vekhter 2010.11.30 244512
4 <6/17> Oscillating Fuzzy Sphere and M5/anti M5 configurations in ABJM model 2009.06.16 247208
3 BK 석학초청 특별세미나 - Frustration and dimensional reduction in multi-orbital systems 2011.10.28 252974
2 <10/25> Wave properties of dipole-exchange spin waves in confined magnetic thin films 2006.10.25 296433
1 <12/3> Magnetic couplings, optical spectra, and spin-orbit exciton in 5d Mott insulator Sr2IrO4 2012.11.26 403561