장소 | #1323(E6-2. 1st fl.) |
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일시 | Nov. 16 (Wed), 4p.m. |
연사 | Dr. Heung-Sik Kim , University of Toronto |
Realizing Haldane Model in Fe-based Honeycomb Ferromagnetic Insulators
Nov. 16 (Wed), 4p.m., #1323(E6-2. 1st fl.)
Dr. Heung-Sik Kim , University of Toronto
The topological Haldane model (THM) on a honeycomb lattice is a prototype of systems hosting topological phases of matter without external fields. It is the simplest model exhibiting the quantum Hall effect without Landau levels, which motivated theoretical and experimental explorations of topological insulators and superconductors. Despite its simplicity, its realization in condensed matter systems has been elusive due to a seemingly difficult condition of spinless fermions with sublattice-dependent magnetic flux terms. While there have been theoretical proposals including elaborate atomic-scale engineering, identifying candidate THM materials has not been successful, and the first experimental realization was recently made in ultracold atoms. Here we suggest that a series of Fe-based honeycomb ferromagnetic insulators, AFe2(PO4)2 (A=Ba,Cs,K,La) possess Chern bands described by the THM. While BaFe2(PO4)2 fails to exhibit quantized Hall effect due to the filling of even and odd Chern bands, we predict that compounds with A=K,Cs,La have nontrivial bulk Chern numbers with well-defined gap, thereby enabling a solid state realization of THM.
Contact: MyungJoon Han, Physics Dept., (mj.han@kaist.ac.kr)
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번호 | 일시 | 장소 | 연사 | 제목 |
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공지 | 2019/09/18 - 12/5 | Seminar Room #1323 | Prof. David Schuster and etc. | Fall 2019: Physics Seminar Serises |
공지 | 2019/09/02 - 12/09 | Seminar Room 1501 | 이호성 박사 (한국표준과학연구원) and etc. | Fall 2019: Physics Colloquium |
303 | 2017/03/21 - 06/08 | Seminar Room 1323 | 조길영 박사(KAIST) 외 |
Spring 2017: Physics Seminar Serises
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302 | Thursday, December 14, 2017 at 3:00 pm | Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus | Chunglee Kim (KASI) | Exploring the Universe via GWs in the era of multi-messenger astronomy |
301 | July 2. 2018 (Monday) 3:00 PM | Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus | Dr. Peter Winter (Argonne National Laboratory) |
High Precision Magnetic Field Measurement for the Muon g-2 Experiment
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300 | Jun. 14 (Tue) 4PM | Seminar Room (#2502, 2nd fl.) | Young-Sik Ra, Université Pierre et Marie Curie | Photonic quantum network based on multimode squeezed vacuums and single-photon subtraction |
299 | Nov. 1 (Tue.) 2:30 pm | Seminar Room #1323(E6-2) | Prof. Youngjoon Kwon, Yonsei Univ. | Search for dark sector particles in the B-factory experiments |
298 | July 27, 2018 at 15:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Dr. Hyejung Kim(Technische University Dresden) |
Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima
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297 | July 13, 2018 at 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Prof. Ian Lewis (The University of Kansas, Department of Physics & Astronomy) | Loop Induced Single Top Partner Production and Decay at the LHC |
296 | July 26, 2018 at 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Manki Kim (Department of Physics, Cornell University) |
Inflation in String Theory and Backreaction
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295 | Thursday, July 12, 2018 at 17:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6) | Dr. Jae Hyeok Yoo (University of California, Santa Barbara, Department of Physics) | The MilliQan Experiment: Search for Milli-Charged Particles at the LHC |
294 | 2015/06/03, 12PM | Room 101, E11 | Prof. Min-Kyo, Seo & Hansuek, Lee(KAIST) |
The First Wednesday Multidisciplinary Forum
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293 | April 5th 2017, 12:00 ~ 13:00 | Room 101, Creative Learning Bldg.(E11) | Prof. Wonho Choe(Dept. of Physics),Prof. Young-chul GHIM(Dept. of Nuclear & Quantum Engineering) |
2017년 4월 첫수 융합포럼 개최 안내(물리학과 & 원자력 및 양자공학과 공동 개최)/The First Wednesday Multidisciplinary Forum in April 2017 organized by Dept. of Physics & Dept. of Nuclear & Quantum Engineering
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292 | January 23, 2019 | Rm. C303, Creation Hall (3F), Munji Campus | Mikko Mottonen |
Ultrasensitive Microwave Bolometer: Opportunity for Axion Detectors
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291 | Feb. 25 - Jun 3 | Rm. 1501 (E6) |
Spring 2019: Physics Colloquium
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290 | - | RM. 1323, E6-2 |
Spring 2019: Physics Seminar Serises
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289 | August 27 (Tue.), 4:00PM | Rm. 1323, E6 | Hiroshi Eisaki |
Critical current properties of Fe-based superconductors
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288 | August. 14th (Wed.), 4:00PM, | Rm. 1323, E6 | Prof. Nicolas Treps |
Quantum Optics, at the heart of quantum metrology and quantum information
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287 | 2019. 7. 16(화) | Rm. 1323 (E6-2) | Prof. Sidney Nagel |
2019 Physics Distinguished Lecture
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286 | 8/19 (Mon), 10:00~11:30, 8/22 (Thur), 10:00~11:30 | Rm. 1322, E6-2 | Nicolas Treps |
Tutorials on Multimode Quantum Optics in the Continuous Variable Regime
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