261 citations · 899 across the 15 of their papers we have counts for
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Linear scaling relationship of Néel temperature and dominant magnons in pyrochlore ruthenates
Jae Hyuck Lee, Dirk Wulferding, Junkyoung Kim +3
We present a systematic Raman spectroscopy study on a series of pyrochlore ruthenates, a system which is not yet clearly settled on its magnetic origin and structure. Apart from th…
Collective magnetic Higgs excitation in a pyrochlore ruthenate
Dirk Wulferding, Junkyeong Kim, Mi Kyung Kim +13
The emergence of scalar Higgs-type amplitude modes in systems where symmetry is spontaneously broken has been a highly successful, paradigmatic description of phase transitions, wi…
Dimensionality controlled Mott transition and correlation effects in single- and bi-layer perovskite iridates
Q. Wang, Y. Cao, J. A. Waugh +5
We studied Sr2IrO4 and Sr3Ir2O7 using angle-resolved photoemission spectroscopy (ARPES), making direct experimental determinations of intra- and inter-cell coupling parameters as w…
Quasi-particle scattering and protected nature of topological states in a parent topological insulator BiSe
S. R. Park, W. S. Jung, Chul Kim +5
We report on angle resolved photoemission spectroscopic studies on a parent topological insulator (TI), BiSe. The line width of the spectral function (inverse of the quasi-…
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…