Home > 게시판 > 세미나
아래와 같이 세미나를 개최하오니 많이 참석해 주시기 바랍니다.
제목: Emergent Quantum Phenomena in SrTiO3 Heterostructures
연사: 김 민 우 박사님 (서울대학교)
일시: 2014년 12월 2일(화) 16:30
장소: 삼성학술정보관 7층 Creative Learning Room
초록: Oxide heterostructures have recently emerged as a new playground for exploring novel physics in low dimensional systems. Perhaps the most well known material is SrTiO3 (STO), not only as a building block of complex oxide heterostructures , but also as a high-mobility d0-electron semiconductor, and a superconductor with the lowest known carrier density. Using thin-film growth techniques, we have fabricated “delta-doped” STO structures that confine the superconducting Cooper pairs in 2D without surface or interface scattering. Crucially, these samples simultaneously show quantum oscillations that demonstrate the presence of 2D electron states . More recently, we have found unconventional spin properties in these samples, revealed by the robustness of the superconductivity to parallel magnetic fields . Furthermore, by increasing the mobility, we can clearly map out the transition of the electronic structure by dimensionality change from 2D to 3D, and approach the 2D clean regime where 2D metallic and superconducting phases can coexist . These results provide an ideal system to investigate quantum phase transitions into a variety of ground states, and novel superconductivity in the 2D clean limit.
 A. Ohtomo & H. Y. Hwang, Nature 427, 423 (2006).
 Y. Kozuka et al., Nature 462, 487 (2009).
 M. Kim et al., Phys. Rev. B 86, 085121 (2012).
 M. Kim et al., Phys. Rev. Lett. 107, 106801 (2011).
|공지||<12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생||2016.11.28||1090119|
|242||<5/22> Vortex partition function and 3d dualities||2012.05.21||69579|
|241||<8/21(Mon.)10:30>Non-Gaussianity as a Particle Detector||2017.08.17||69704|
|240||<7/18(Mon.) 14:00> GEANT4 Particle Physics Simulation Software: A Brief Overview From a User’s Perspective||2016.07.15||69872|
|239||<9/7(금)> Kondo Effect in Chiral Orbital Bands||2012.08.31||69944|
|238||<8/29(토)> 세미나 개최 안내||2015.09.01||69984|
|237||<7/15(Fri.) 11:00> Observation of a field induced quantum spin liquid in α-RuCl3||2016.07.14||69996|
|236||<6/9(화)> 세미나 개최 안내||2015.06.09||70017|
|235||<Dec.30(Wed) 16:30> Some basics about the thermoelectricity; the semi-classical Boltzmann transport approach||2015.12.24||70223|
|234||<6/24(Fri.) 1:30pm>Emergent geometry from field theory: Wilson's renormalization group revisited||2016.06.20||70267|
|233||<11/5> Optical spectroscopic probe on the surface state in three dimensional topological insulators||2012.10.24||70640|
|232||<9/14> High temperature superconductivity and fluctuating stripe||2012.09.10||71061|
|231||<11/22> Spin polarization of photoelectrons from a topological insulator||2012.10.22||71380|
|230||<10/24> Dung-hai Lee 교수와의 간담회||2012.10.23||71685|
|229||<7/15(Fri.) 14:00> Electronic quasiparticles in the quantum dimer model||2016.07.12||71692|
|228||<March.18(Fri) 11:00> High Pressure Synthesis and Characterization of Non-Oxide Superconductors||2016.03.14||71827|
|227||<8/14(Wed.)>3D-strain induced superconductivity in La2CuO4+δ using a simple vertically aligned nanocomposite approach||2019.08.13||71872|
|226||<10/5> Gauge fields. Past, present, future.||2012.10.05||71934|
|225||<2/9(월) 오전 11시> 특별 초청세미나 개최 안내||2015.02.03||72564|
|224||<12/30> Correlation between Raman scattering and conductance in a molecular junction||2013.12.23||72579|
|223||<3/2(Fri.)11:00>Evolving magnetic interactions near a Kondo breakdown||2018.02.27||73141|