| 장소 | E6-2. 5st fl. #1501 |
|---|---|
| 일시 | Apr. 08 (Fri.), 4:00 PM |
| 연사 | Dr. Changyoung Kim, SEOUL NATIONAL UNIV. |
“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)
댓글 0
| 번호 | 일시 | 장소 | 연사 | 제목 |
|---|---|---|---|---|
| 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 |
| 75 | May 24 (Tue) 4 PM | E6-2. #1323(1st fl.) | Dr. Euyheon Hwang, SKKU Advanced Institute of Nanotechnology, Sung Kyung Kwan University | Electronic and magnetic properties of 2D transition-metal thiophosphates and tunability of magnetic order with carrier density |
| 74 | May 19 (Thu) 4PM | #1323(E6-2, 1st fl.) | Dr. Heedeuk Shin, POSTECH | Nonlinear/quantum optical effect in silicon nano-photonics |
| 73 | 5월 17일(화), 11:00 ~ 12:00 | 창의학습관(E11), 406호 | 방준혁 박사(Korea Basic Science Institute, KBSI) | The CERN Resonant WISP Search: Development, Results and Lesson-Learned |
| 72 | May 19, 2016 (Thur.) 3PM | May 19, 2016 (Thur.) 3PM, | Dr. Michael Betz, CERN | The CERN Resonant WISP Search: Development, Results and Lesson-Learned |
| 71 | May 16, 2016 (Mon) 4PM | #1323(E6-2, 1st Fl.) | Dr. Daniel Bowring , Fermi National Accelerator Laboratory | Tuning microwave cavities with biased nonlinear dielectrics for axion searches |
| 70 | May 13 (Fri.), 1:30 PM | E6. #1501(1st fl.) | Dr. Young-Woo Son, Dept. of Physics, KIAS | Aperiodic crystals in low dimensions |
| 69 | May 13 (Fri.) 4 PM | E6. #1501(1st fl.) | Dr. Hosub Jin, Dept. of Physics, UNIST | Graphene analogue in (111)- BaBiO3 bilayer heterostructures for topological electronics |
| 68 | May 11 (Wed.), 4 PM | E6-2. #1323(1st fl.) | Dr. Bumjoon Kim, Max Planck Institute for Solid State Research | The quest for novel high-temperature superconductors---Prospects and progress in iridates |
| 67 | Apr. 28 (Thu.) 3PM | #2501(E6-2. 2nd fl.) | Dr. Chang Hee Sohn, SEOUL NATIONAL UNIVERSITY | Lattice/Spin/Charge Coupling in 5d Pyrochlore Cd2Os2O7 |
| 66 | April 26 (Tue), 4PM | #1323(1st Floor. E6-2) | Dr. Myung-Ho Bae, Korea Research Institute of Standards and Science | Transport spectroscopy for electronic bands in carbon-based nanomaterials with weak-bond contacts |
| 65 | Apr. 19(Tue.), 2PM | #1323(E6-2. 1st fl.) | Prof. Mark Koepke, Department of Physics and Astronomy, West Virginia University, USA | Nonlocal collisional electron transport in partially ionized plasma generation, structure, and stability |
| 64 | 4월 18일(월), 15:30~ | KI빌딩(E4), 강의실 B501 (5F) | Prof. Robert A. DiStasio Jr. (Cornell University) |
First Principles Approaches for Intermolecular Interactions: From Gas-Phase Dimers to Liquid Water and Molecular Crystal Polymorphism
 |
| 63 | Apr. 12 (Tue.), 4 PM | E6-2. 1st fl. #1323 | Dr. Jeehoon Kim, POSTECH | Confinement of Superconducting Vortices in Magnetic Force Microscopy |
| » | Apr. 08 (Fri.), 4:00 PM | E6-2. 5st fl. #1501 | Dr. Changyoung Kim, SEOUL NATIONAL UNIV. | Spectroscopic studies of iron-based superconductors : what have we learned? |
| 61 | Apr. 08 (Fri.), 13:30 PM | E6-2. 1st fl. #1501 | Dr. Yunkyu Bang, Chonnam National Univ. | Theoretical Overview of Iron-based superconductors and its future |
| 60 | Apr. 5 (Tue.), 4PM | E6-2. 1st fl. #1322 | Dr. Ara Go, Columbia University | A new impurity solver for multi-orbital systems: adaptive truncation of the Hilbert space |
| 59 | Apr. 01 (Fri.) 4:15 PM | E6-2. 1st fl. #1501 | Dr. JONG SOO LIM, KIAS | Cotunneling drag effect in Coulomb-coupled quantum dots |
| 58 | Apr. 01 (Fri.) 2:30 PM | E6-2. 1st fl. #1501 | Dr. KICHEON KANG, Chonnam National University | Interference of single charged particles without a loop and dynamic nonlocality |
| 57 | April 6, 2016 (Wed), 3:30 PM | E6-2, RM #1323 | Dr. Andrei Matlashov (Los Alamos National Laboratory) | Superconducting Quantum Interference Devices for Precision Detection |
| 56 | April 4, 2016 (Mon) - April 8, 2016 (Fri) | KAIST Natural Science Building (E6-2), RM #4314 | Dr. Fritz Caspers (CERN) | Radio frequency engineering |