visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-09-29 16:00 
일시 Sep. 29 (Thu), 4:00 PM 
장소 E6-2. #2501(2nd fl.) 
연사 Dr. Minu Kim, Institute for Basic Science, Seoul National University 

Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip?

 

Sep. 29 (Thu), 4:00 PM, E6-2. #2501(2nd fl.)
Dr. Minu Kim, Institute for Basic Science, Seoul National University

 

Recently, we found novel routes to experimentally control the phase diagram in the perovskite bismuthate BaBiO3 (BBO), the parent compound of several high-Tc oxide superconductors. Numerous experimental and theoretical studies have sought to gain insight into the mechanisms that control the physics of these bismuthates [1,2]; to date, however, only limited progress has been made in hole-doped bulk samples. Here, we present our recent progress on exploration of the novel phase diagram of BBO via thickness and doping controls. We revealed that a minimum length scale to sustain a charge density wave order in BBO films by thickness control [3]. Furthermore, the electronic and structural properties of BBO were strongly dependent on oxygen deficiency, disclosed by the combination of in situ spectroscopic techniques and first-principles calculations. Our approaches introduce independent control parameters to explore the BBO phase diagram, and may also provide a useful guideline to study the recently predicted topological phases in electron-doped bismuthates [4].

 

[1] A. W. Sleight, J. L. Gillson, P. E. Bierstedt, Solid State Commun. 17, 27 (1975)
[2] R. J. Cava et al., Nature 328, 814 (1988)
[3] G. Kim et al., Phys. Rev. Lett. 115, 226402 (2015)
[4] B. Yan et al., Nat. Phys. 9, 709 (2013)

 

Contact: MyungJoon Han, Physics Dept., (mj.han@kaist.ac.kr)

번호 날짜 장소 제목
282 2023-11-16 16:00  E6-2(Natural Science B/D). 1st fl. #1323  Electric-field control of emergent phenomena in correlated oxide thin films
281 2023-11-09 16:00  E6-2(Natural Science B/D). 1st fl. #1323  Assessing the Capability of Near-Term Photonic Devices Towards Quantum Supremacy
280 2016-09-02 14:30  E6-2(1st fl.), #1323  Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction
279 2016-09-02 16:00  E6-2(1st fl) #1323  Quantum Electrical Transport in Topological Insulator Nanowires
278 2022-01-17 14:00  E6-2 Room 2502  Five Lectures on Observational Probes of Dark Energy file
277 2020-11-12 16:00  E6-2 1323  2020 가을학기 광학분야 특별세미나
276 2024-03-20 16:00  E6-2 #2502  [High-Energy Theory Seminar] Black hole states at finite N
275 2024-03-13 16:00  E6-2 #2502  [High-Energy Theory Seminar] The Schwarzschild Black Hole from Perturbation Theory to all Orders
274 2022-10-26 10:00  E6-2 #2502  Replica Higher-Order Topology of Hofstadter Butterflies in Twisted Bilayer Graphene
273 2022-08-08 14:00  E6-2 #2502  Classical Shadow Tomography for Analog Quantum Simulators
272 2023-07-14 11:00  E6-2 #1501  Interfaces engineering of thin film oxides
271 2016-09-29 16:00  E6-2 #1323 (1st floor)  Large-scale Silicon Photonic MEMS Switches
270 2022-11-24 16:00  E6-2 #1323 & Zoom  Probing fundamental physics by mapping the mm and sub-mm sky
269 2023-03-16 16:00  E6-2 #1323  (광학분야 세미나) Investigation of 3D cell mechanics using refractive-index tomography
268 2023-01-09 16:00  E6-2 #1323  Non-Hermitian Hopf-bundle Matter. Moon Jip Park (IBS-PCS)
267 2023-01-10 16:00  E6-2 #1323  Terahertz Spectroscopy of Quantum Materials, Jae Hoon Kim (Yonsei University)
266 2023-03-24 11:00  E6-2 #1323  (응집물리 세미나)Floquet simulators of topological surface states in isolation
265 2022-11-03 13:00  E6-2 #1323  [High-Energy Theory Seminar] Supersymmetric observables via Fermi-gas method
264 2023-04-06 16:00  E6-2 #1323  (광학분야 세미나)Nanophotonics-based approaches to explore Berry physics
263 2023-03-30 16:00  E6-2 #1323  (광학분야 세미나)Scalable quantum entanglement in trapped-ions based quantum computer