71 citations · 468 across the 20 of their papers we have counts for
12 papers · 1 filter
Honeycomb oxide heterostructure: a new platform for Kitaev quantum spin liquid
Baekjune Kang, Miju Park, Sehwan Song +11
Kitaev quantum spin liquid, massively quantum entangled states, is so scarce in nature that searching for new candidate systems remains a great challenge. Honeycomb heterostructure…
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…
Correlated Oxide Dirac Semimetal in the Extreme Quantum Limit
Jong Mok Ok, Narayan Mohanta, Jie Zhang +17
Quantum materials (QMs) with strong correlation and non-trivial topology are indispensable to next-generation information and computing technologies. Exploitation of topological ba…
Doped NiO: the Mottness of a charge transfer insulator
Friederike Wrobel, Hyowon Park, Changhee Sohn +9
The evolution of the electronic structures of strongly correlated insulators with doping has long been a central fundamental question in condensed matter physics; it is also of gre…
Competing Phases in Epitaxial Vanadium Dioxide at Nanoscale
Yogesh Sharma, Martin V. Holt, Nouamane Laanait +11
Phase competition in correlated oxides offers tantalizing opportunities as many intriguing physical phenomena occur near the phase transitions. Owing to a sharp metal-insulator tra…
Photoemission and Dynamical Mean Field Theory Study of Electronic Correlation in a Metal of SrRhO Thin Film
Yujun Zhang, Minjae Kim, Jernej Mravlje +8
Perovskite rhodates are characterized by intermediate strengths of both electronic correlation as well as spin-orbit coupling (SOC) and usually behave as moderately correlated meta…
Strong spin-phonon coupling unveiled by coherent phonon oscillations in Ca2RuO4
Min-Cheol Lee, Choong H. Kim, Inho Kwak +8
We utilize near-infrared femtosecond pulses to investigate coherent phonon oscillations of Ca2RuO4. The coherent Ag phonon mode of the lowest frequency changes abruptly not only it…
Electronic and magnetic properties of epitaxial SrRhO3 films
John Nichols, Simuck F. Yuk, Changhee Sohn +4
Strong interplay of fundamental order parameters in complex oxides are known to give rise to exotic physical phenomena. The 4d transition metal oxide SrRhO3 has generated much inte…
Latent Instabilities in Metallic LaNiO3 Films by Strain Control of Fermi-Surface Topology
Hyang Keun Yoo, Seung Ill Hyun, Luca Moreschini +10
Strain control is one of the most promising avenues to search for new emergent phenomena in transition-metal-oxide films. Here, we investigate the strain-induced changes of electro…
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…
Temperature Evolution of Itinerant Ferromagnetism in SrRuO3 Probed by Optical Spectroscopy
D. W. Jeong, Hong Chul Choi, Choong H. Kim +12
The temperature () dependence of the optical conductivity spectra of a single crystal SrRuO thin film is studied over a range from 5 to 450 K. We observed signifi…
Dimensional crossover of the electronic structure in LaNiO3 ultrathin films: Orbital reconstruction, Fermi surface nesting, and the origin of the metal-insulator transition
Hyang Keun Yoo, Seung Ill Hyun, Luca Moreschini +9
Dimensionality control in the LaNiO3 (LNO) heterostructure has attracted attention due to its two-dimensional (2D) electronic structure was predicted to have an orbital ordered ins…