100 citations · 395 across the 16 of their papers we have counts for
16 papers
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…
Electric control of two-dimensional Van Hove singularity in oxide ultra-thin films
Donghan Kim, Younsik Kim, Byungmin Sohn +4
Divergent density of states (DOS) can induce extraordinary phenomena such as significant enhancement of superconductivity and unexpected phase transitions. Moreover, van Hove singu…
Tuning orbital-selective phase transitions in a two-dimensional Hund's correlated system
Eun Kyo Ko, Sungsoo Hahn, Changhee Sohn +12
Hund's rule coupling () has attracted much attention recently for its role in the description of the novel quantum phases of multi orbital materials. Depending on the o…
Experimental verification of polar structures in ultrathin BaTiO_{3} layers using resonant x-ray reflectivity
Kook Tae Kim, Yeong Jae Shinb, Sung-Jin Kang +6
Functional devices with ultrathin ferroelectric layers have been attracted as a promising candidate for next-generation memory and logic device applications. Using the ultrathin fe…
Heteroepitaxial control of Fermi liquid, Hund metal, and Mott insulator phases in the single-atomic-layer limit
Jeong Rae Kim, Byungmin Sohn, Hyeong Jun Lee +16
Interfaces between dissimilar correlated oxides can offer devices with versatile functionalities. In that respect, manipulating and measuring novel physical properties of oxide het…
Flexoelectric control of a ferromagnetic metal
Wei Peng, Se Young Park, Chang Jae Roh +16
Electric fields have played a key role in discovering and controlling exotic electronic states of condensed matter. However, electric fields usually do not work in metals as free c…
Transport and optical properties of the chiral semiconductor Ag3AuSe2
Juyeon Won, Soyeun Kim, Martin Gutierrez-Amigo +9
Previous band structure calculations predicted Ag3AuSe2 to be a semiconductor with a band gap of approximately 1 eV. Here, we report single crystal growth of Ag3AuSe2 and its trans…
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…
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…
Interface control of ferroelectricity in a SrRuO3/BaTiO3/SrRuO3 capacitor and its critical thickness
Yeong Jae Shin, Yoonkoo Kim, Sung-Jin Kang +12
The atomic-scale synthesis of artificial oxide heterostructures offers new opportunities to create novel states that do not occur in nature. The main challenge related to synthesiz…
Determination of Hund's coupling in 5d Oxides using Resonant Inelastic X-ray Scattering
Bo Yuan, J. P. Clancy, A. M. Cook +10
We report resonant inelastic X-ray scattering (RIXS) measurements on ordered double perovskite samples containing Re and Ir with and electronic configur…
Direct penetration of spin-triplet superconductivity into a ferromagnet in Au/SrRuO3/Sr2RuO4 junctions
M. S. Anwar, S. R. Lee, R. Ishiguro +9
Efforts have been ongoing to establish superconducting spintronics utilizing ferromagnet/superconductor heterostructures1. Previously reported devices are based on spin-singlet sup…
Phonon-assisted optical excitation in the narrow bandgap Mott insulator Sr3Ir2O7
H. J. Park, C. H. Sohn, D. W. Jeong +6
We examined the temperature (T) evolution of the optical conductivity spectra of SrIrO over a wide range of 10-400 K. The system was barely insulating, exhibiting a sma…
Step bunching-induced vertical lattice mismatch and crystallographic tilt in vicinal BiFeO3(001) films
T. H. Kim, S. H. Baek, S. Y. Jang +7
Epitaxial (001) BiFeO3 thin films grown on vicinal SrTiO3 substrates are under large anisotropic stress from the substrates. The variations of the crystallographic tilt angle and t…
Epitaxial growth of multiferroic Pb(Zr0.57Ti0.43)O3-Pb(Fe2/3W1/3)O3 solid-solution thin films and their magnetoelectric effects
D. Lee, Y. -A. Park, S. M. Yang +5
We report on epitaxial growth of single-phase [Pb(Zr0.57Ti0.43)O3]0.8[Pb(Fe2/3W1/3)O3]0.2 (PZT-PFW) solid-solution thin films using pulsed laser deposition. X-ray diffraction measu…
Multiple conducting carriers generated in LaAlO3/SrTiO3 heterostructures
S. S. A. Seo, Z. Marton, W. S. Choi +6
We have found that there is more than one type of conducting carriers generated in LaAlO3/SrTiO3 heterostructures by comparing the sheet carrier density and mobility from optical t…