logo

korean english

게시판

Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 다과를 준비하오니 많은 참석 부탁드립니다.


아 래


Title: Electronic structures of strongly-correlated systems


Speaker: Prof.  Joo Yull Rhee (Department of Physics, SKKU)


Date & Time: Sep. 9 (Wed.) 2015, 4:30 PM 


Place: Natural Science 1,  Room No. 31214


Abstract: If the electrons are spatially localized they acts differently from when they were itinerant. The strong on-site Coulomb interactions among localized electrons lead to the appearance of variety of peculiar properties. In some Ce-based compounds it is commonly believed  that the Kondo interaction might cause some peculiar properties, such as heavy-fermion behavior, quantum criticality (QC), non Fermi-liquid behavior, and so on. In the quantum-critical region, it is not possible to describe the phase transition by using the Landau's theory of order parameter. Recently the orbital anisotropy in heavy-fermion systems is crucial ingredient for QC. In our electronic-structure calculations indeed indicate that the anisotropy of f-orbital in some Ce-based compounds is very important for the appearance of QC. Another interesting area of strongly-correlated systems is a class of multiferroic materials. A typical example of multiferroics is BiFeO3, which exhibit both antiferromagnetic and ferroelectric behaviors. Although the compound is intensively studied owing to its multiferroic behavior, its crystal structure is still unclear. There are several suggestions for the crystal structures. In our calculations indicate that the triclinic structure is the most appropriate structure. In addition, only the triclinic structure results in a semiconducting behavior.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1079349
446 <11/7> On-Film Formation of Bi Nanowires with Extraordinary Electron Mobility 2008.11.03 170358
445 <11/14> 한방의료기기에서 나노소자의 활용 2008.11.11 76062
444 <11/21>Super B factory @ KEK 2008.11.19 77882
443 <11/28> 건국 100주년을 대비하는 과학청년의 자세 2008.11.25 80385
442 <12/5> Fluerenes with diversed structures and their applications 2008.12.02 172245
441 <12/12> 나노물리학과 컴퓨터 시뮬레이션 2008.12.08 75763
440 <3/13> Probing hidden magnetism and quantum criticality in unconventional superconductors 2009.03.06 183272
439 THINKING PHYSICS 발표회 2009.03.16 74823
438 <3/27>Social Experience, Brain, and Behavior 2009.03.23 131510
437 <4/3>Enhanced emission rate from a single quantum well using surface plasmon 2009.03.31 89608
436 <4/10> Holographic Nucleons: In Search of a String Theoretical Solution to QCD 2009.04.06 79197
435 <4/17>고온초전도 2세대 선재 : 현황 및 전망 2009.05.06 77641
434 <5/1>In vivo optical imaging of hemodynamic changes 2009.05.06 126166
433 <5/8>Recent trend of thin film battery 2009.05.06 87548
432 <5/15>강상관 전자계의 열전변환 응용 2009.05.08 77194
431 <5/22> Semiconductor Nanomaterials for Unusual Format Electronics 2009.05.18 154400
430 <5/29> Nanomaterials Work at NASA-Johnson Space Center 2009.05.25 128309
429 <6/5>Magnetism and Superconductivity 2009.05.27 92316
428 <9/11> Complex networks in technology, biology and sociology 2009.09.04 111101
427 <9/18> 생체계에서의 협동현상: 박테리아 수영에서부터 고분자 수송현상까지 2009.09.14 94867