162 citations · 866 across the 29 of their papers we have counts for
13 papers · 1 filter
Doping-dependent superconducting physical quantities of K-doped BaFeAs obtained through infrared spectroscopy
Seokbae Lee, Yu-Seong Seo, Seulki Roh +3
We investigated four single crystals of K-doped BaFeAs (Ba-122), BaKFeAs with = 0.29, 0.36, 0.40, and 0.51, using infrared spectroscopy. We explored…
Spontaneous breaking of mirror symmetry beyond critical doping in Pb-Bi2212
Saegyeol Jung, Byeongjun Seok, Chang jae Roh +9
Identifying ordered phases and their underlying symmetries is the first and most important step toward understanding the mechanism of high-temperature superconductivity; critical b…
Light-induced coherent interlayer transport in stripe-ordered
Morihiko Nishida, Kota Katsumi, Dongjoon Song +2
We have investigated the photoexcited transient responses of stripe-ordered phase in a cuprate superconductor, …
Thermal decoupling in high- cuprate superconductors
Sungwoo Lee, Woojin Choi, Yeongjae Kim +4
In unconventional high- cuprate superconductors, the intricate interplay between the non-ergodic bad metal and the strange metal state has remained enigmatic. Herein, we unrav…
phonon anomaly driven by Fermi surface instability at intermediate temperature in YBaCuO
Dongjin Oh, Dongjoon Song, Younsik Kim +5
We performed temperature- and doping-dependent high-resolution Raman spectroscopy experiments on YBaCuO to study phonons. The temperature dependence…
Superconducting fluctuations in overdoped BiSrCaCuO
Yu He, Su-Di Chen, Zi-Xiang Li +13
Fluctuating superconductivity - vestigial Cooper pairing in the resistive state of a material - is usually associated with low dimensionality, strong disorder or low carrier densit…
Spectroscopic Evidence for Charge Order Melting via Quantum Fluctuations in a Cuprate
W. S. Lee, K. J. Zhou, M. Hepting +14
Copper-oxide high TC superconductors possess a number of exotic orders co-existing with or proximal to superconductivity, whose quantum fluctuations may account for the unusual beh…
Light-induced nonequilibrium response of the superconducting cuprate LaSrCuO
Hiroaki Niwa, Naotaka Yoshikawa, Kaito Tomari +4
We report the dynamics of the cuprate superconductor LaSrCuO () after intense photoexcitation utilizing near-infrared (800 nm) optical pump-terahertz pr…
Nematicity in the pseudogap state of cuprate superconductors revealed by angle-resolved photoemission spectroscopy
S. Nakata, M. Horio, K. Koshiishi +9
The nature of the pseudogap and its relationship with superconductivity are one of the central issues of cuprate superconductors. Recently, a possible scenario has been proposed th…
Light-induced switching to a Metastable Phase in a Layered Superconductor LaSrCuO (x=0.15)
Kaito Tomari, Ryusuke Matsunaga, Hiroaki Niwa +3
We investigated transient optical responses in an optimally-doped high-Tc superconductor La2-xSrxCuO4 (x=0.15) by using 800-nm optical pump and terahertz probe spectroscopy. With i…
Doping-dependent critical current properties in K, Co, and P-doped BaFe2As2 single crystals
Shigeyuki Ishida, Dongjoon Song, Hiraku Ogino +5
In order to establish the doping dependence of the critical current properties in the iron-based superconductors, the in-plane critical current density (Jc) of BaFe2As2-based super…
Angle-resolved photoemission spectroscopy of electron-doped cuprate superconductors: Isotropic electron-phonon coupling
Seung Ryong Park, D. J. Song, C. S. Leem +4
We have performed high resolution angle resolved photoemission (ARPES) studies on electron doped cuprate superconductors Sm2-xCexCuO4 (x=0.10, 0.15, 0.18), Nd2-xCexCuO4 (x=0.15) an…
Electron Removal Self Energy and its application to Ca2CuO2Cl2
Chul Kim, S. R. Park, C. S. Leem +5
We propose using the self energy defined for the electron removal Green's function. Starting from the electron removal Green's function, we obtained expressions for the removal sel…