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Observation of spin-dependent dual ferromagnetism in perovskite ruthenates
Sungsoo Hahn, Byungmin Sohn, Minjae Kim +10
We performed in-situ angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES (SARPES) experiments to investigate the relationship between electronic band structur…
Cu doping effects on the electronic structure of Fe1-xCuxSe
Soonsang Huh, Zouyouwei Lu, Youn Sik Kim +8
Using angle-resolved photoemission spectroscopy (ARPES), we studied the evolution of the electronic structure of Fe1-xCuxSe from x = 0 to 0.10. We found that the Cu dopant introduc…
Observation of the orbital Hall effect in a light metal Ti
Young-Gwan Choi, Daegeun Jo, Kyung-Hun Ko +7
The orbital angular momentum is a core ingredient of orbital magnetism, spin Hall effect, giant Rashba spin splitting, orbital Edelstein effect, and spin-orbit torque. However, its…
Observation of metallic electronic structure in a single-atomic-layer oxide
Byungmin Sohn, Jeong Rae Kim, Choong H. Kim +11
Correlated electrons in transition metal oxides (TMOs) exhibit a variety of emergent phases. When TMOs are confined to a single-atomic-layer thickness, experiments so far have show…
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…
Deep learning-based statistical noise reduction for multidimensional spectral data
Younsik Kim, Dongjin Oh, Soonsang Huh +13
In spectroscopic experiments, data acquisition in multi-dimensional phase space may require long acquisition time, owing to the large phase space volume to be covered. In such case…