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6 papers
High resolution angle resolved photoemission studies on quasi-particle dynamics in graphite
C. S. Leem, B. J. Kim, Chul Kim +9
We obtained the spectral function of the graphite H point using high resolution angle resolved photoelectron spectroscopy (ARPES). The extracted width of the spectral function (inv…
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…
Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
B. J. Kim, Hosub Jin, S. J. Moon +11
We investigated electronic structure of 5d transition-metal oxide Sr2IrO4 using angle-resolved photoemission, optical conductivity, and x-ray absorption measurements and first-prin…
Effect of linear density of states on the quasi-particle dynamics and small electron-phonon coupling in graphite
C. S. Leem, B. J. Kim, Chul Kim +8
We obtained the spectral function of very high quality natural graphite single crystals using angle resolved photoelectron spectroscopy (ARPES). A clear separation of non-bonding a…
Electronic Structure of Electron-doped Sm1.86Ce0.14CuO4: Strong `Pseudo-Gap' Effects, Nodeless Gap and Signatures of Short Range Order
S. R. Park, Y. S. Roh, Y. K. Yoon +7
Angle resolved photoemission (ARPES) data from the electron doped cuprate superconductor SmCeCuO shows a much stronger pseudo-gap or "hot-spot" effect than th…
Electronic structures of layered perovskite Sr2MO4 (M=Ru, Rh, and Ir)
S. J. Moon, M. W. Kim, K. W. Kim +11
We investigated the electronic structures of the two-dimensional layered perovskite Sr\textit{M}O (\textit{M}=4\textit{d} Ru, 4\textit{d} Rh, and 5\textit{d} Ir) using…