visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-09-29 16:00 
연사  
장소 E6-2. #2501(2nd fl.) 

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 연사 제목
191 2018-10-24 10:30    Photonic integration of next-generation clocks and Hertz-absolute-accuarcy optical frequenncy synthesizers file
190 2020-02-12 13:00    From inflation to new weak-scale file
189 2019-05-09 16:00    Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
188 2019-05-09 16:00    Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
187 2022-05-20 11:00    (응집물리 세미나) Exploration of new polymorphs in van der Waals crystals
186 2019-11-28 16:00    Generation of coherent EUV emissions using ultrashort laser pulses file
185 2024-05-28 10:00    Mixed-State Quantum Spin Liquids and Dynamical Anyon Condensations in Kitaev Lindbladians
184 2023-08-24 11:00    Advancing magnonic metamaterials: spin waves in nanomagnetic arrays
183 2016-04-19 14:00    Nonlocal collisional electron transport in partially ionized plasma generation, structure, and stability
182 2021-04-09 10:00    Integrated Lithium Niobate Photonics file
181 2018-09-07 15:00    Recent developments in density functional theory: From new functionals to the nature of the chemical bond file
180 2023-07-20 16:00    [CAPP Seminar] Cosmoparticle Physics of Dark Universe file
179 2016-11-10 16:00    Low Dimensional Active Plasmonics and Electron Optics in Graphene
178 2015-06-03 12:00    The First Wednesday Multidisciplinary Forum file
177 2019-06-04 17:00    Stochastic nature of bacterial eradication using antibiotics file
176 2023-09-27 16:00    Chiral Magnets: Domain-Wall Skyrmions and String Theory Realization
175 2018-12-27 16:00    Quantum Innovation (QuIN) Laboratory file
174 2019-10-17 16:00    Top down manipulation of Waves : From Metamaterials, Correlated Disorder, Quantum Analogy, to Digital Processing file
173 2019-08-14 16:00    Quantum Optics, at the heart of quantum metrology and quantum information file
172 2024-07-25 16:00    Generation and Certification of Optical Quantum States for Information Processing file