visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-04-08 16:00 
연사  
장소 E6-2. 5st fl. #1501 

“Spectroscopic studies of iron-based superconductors : what have we learned?”

 

Apr. 08 (Fri.), 4:00 PM, E6-2. 5st fl. #1501
Dr. Changyoung Kim, SEOUL NATIONAL UNIV.


As in the cases for other materials, measuring the electronic structures is the first step towards understanding the microscopic mechanism for the superconductivity in of iron-based superconductors (IBS). Angle resolved photoelectron spectroscopy (ARPES) has played a key role in the studies of IBS, from band structure determination to superconducting gap measurements.

In this presentation, I will give an overview on the spectroscopic studies of IBS by using ARPES including recent progress on 100K superconductivity in mono-layer FeSe. I will start with a brief description of the general electronic structures (band dispersions and Fermi surfaces) and orbital characters of bands measured by ARPES. The main part of the presentation will be on two subjects, namely, nematic order and mono-layer superconductivity. The anisotropic electronic structure of the nematic order can be investigated by ARPES. In addition, ARPES is also surface sensitive which makes it suitable for the study of mono-layer superconductivity. I will discuss our recent work on these two subjects along with results from other groups.


Contact: Eun Gook Moon, Physics Dept., (egmoon@kaist.ac.kr)

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
246 2015-12-01 16:00    Introducing extra dimensions to spectroscopic studies of advanced quantum materials
245 2015-11-10 16:00    Rapid heating of matter using high power lasers
244 2022-11-10 16:00    Probing the Origin of Cosmic Infrared Background and Future Prospects with SPHEREx
243 2023-02-28 11:00    Topotactic redox engineering toward novel material file
242 2018-10-16 10:00    Capturing protein cluster dynamics and gene expression output in live cells file
241 2025-04-29 16:00  Dr. Tokuro Shimokawa (Okinawa Institute of Science and Technology)  Can experimentally-accessible measures of entanglement distinguish quantum spin liquid and random singlet phases? file
240 2018-06-18 10:00    Rydberg electromagnetically induced transparency and microwave-to-optical conversion using Rydberg atoms file
239 2025-05-28 16:00  Dr. Thiago L. M. Guedes (Forschungszentrum Jülich)  Computing the graph-changing dynamics of loop quantum gravity file
238 2019-03-29 16:00    Coherent Quantum Control and Magnetism on atoms – Trapped ion and ESR STM file
237 2023-09-26 16:00    [High Energy Theory Seminar]A new step in interacting dark sector cosmologies
236 2016-03-11 16:00    Jan. Switching handedness of of chiral solitons in Z4 topological insulators
235 2021-04-02 14:30    Quantum computing and entanglement generation using trapped ions and photons
234 2021-05-14 14:30    Electrically tunable spin valve effect in vertical van-der-Waals magnetic tunnel junctions file
233 2015-11-28 10:00    Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier
232 2022-05-11 16:00    Gravity as a phenomenon in quantum dynamics
231 2022-05-25 16:00    Uncovering New Lampposts for Dark Matter: Continuum or Conformal
230 2019-05-01 16:00    Raman and x-ray scattering study on correlated electron systems: two case examples file
229 2018-04-13 10:00    Quantum meets Mechanics: from Quantum Information to Fundamental Research file
228 2022-09-30 14:30    Putting a spin on the Josephson effect file
227 2022-07-14 15:00    Pure two-dimensional quantum electron liquid and its phase transition