135 citations · 609 across the 21 of their papers we have counts for
18 papers · 1 filter
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…
Hund's metallicity enhanced by van Hove singularity in cubic perovskite systems
Hyeong Jun Lee, Choong H. Kim, Ara Go
A van Hove singularity (VHS) often significantly amplifies the electronic instability of a crystalline solid, including correlation-induced phenomena such as Hund's metallicity. We…
Novel =3/2 Metallic Phase and Unconventional Superconductivity in GaTaSe
Min Yong Jeong, Seo Hyoung Chang, Hyeong Jun Lee +10
By means of density functional theory plus dynamical mean-field theory (DFT+DMFT) calculations and resonant inelastic x-ray scattering (RIXS) experiments, we investigate the high-p…
Honeycomb-Lattice Mott insulator on Tantalum Disulphide
Jinwon Lee, Kyung-Hwan Jin, Andrei Catuneanu +8
Effects of electron many-body interactions amplify in an electronic system with a narrow bandwidth opening a way to exotic physics. A narrow band in a two-dimensional (2D) honeycom…
Identification of a Kitaev Quantum Spin Liquid by Magnetic Field Angle Dependence
Kyusung Hwang, Ara Go, Ji Heon Seong +2
Quantum spin liquids realize massive entanglement and fractional quasiparticles from localized spins, proposed as an avenue for quantum science and technology. In particular, topol…
Interplay between spin-orbit coupling and van Hove singularity in the Hund's metallicity of SrRuO
Hyeong Jun Lee, Choong H. Kim, Ara Go
We investigate the dynamical properties of SrRuO at zero and very low temperature using density functional theory plus dynamical mean-field theory with an exact diagonaliza…
Theoretical evidence of spin-orbital-entangled =1/2 state in the 3 transition metal oxide CuAlO
Choong H. Kim, Hwanbeom Cho, Santu Baidya +6
Transition metal oxides exhibit various competing phases and exotic phenomena depending on how their reaction to the rich degeneracy of the -orbital. Large spin-orbit coupling (…
Vestiges of Topological Phase Transitions in Kitaev Quantum Spin Liquids
Ara Go, Jun Jung, Eun-Gook Moon
We investigate signatures of topological quantum phase transitions (TQPTs) between the quantum spin liquids (QSLs). In two spatial dimensions, QSLs and their TQPTs are…
Exotic Symmetry Breaking Transitions in 2D Correlated Systems
Sangjin Lee, Jun Jung, Ara Go +1
The Landau paradigm of phase transitions is one of the backbones in critical phenomena. With a symmetry, it describes the Ising universality class whose central charge is one…
Weyl Rings and enhanced susceptibilities in Pyrochlore Iridates: Analysis of Cluster Dynamical Mean-Field Theory Results
Runzhi Wang, Ara Go, Andrew Millis
We match analytic results to numerical calculations to provide a detailed picture of the metal-insulator and topological transitions found in density functional plus cluster dynami…
Adaptively truncated Hilbert space based impurity solver for dynamical mean-field theory
Ara Go, Andrew J. Millis
We present an impurity solver based on adaptively truncated Hilbert spaces. The solver is particularly suitable for dynamical mean-field theory in circumstances where quantum Monte…
Electron interactions, spin-orbit coupling, intersite correlations in pyrochlore iridates
Runzhi Wang, Ara Go, Andrew J. Millis
We perform combined density functional and dynamical mean-field calculations to study the pyrochlore iridates LuIrO, YIrO and EuIrO. Both single…
Imaginary-time matrix product state impurity solver for dynamical mean-field theory
F. Alexander Wolf, Ara Go, Ian P. McCulloch +2
We present a new impurity solver for dynamical mean-field theory based on imaginary-time evolution of matrix product states. This converges the self-consistency loop on the imagina…
Spatial Correlations and the Insulating Phase of the High- Cuprates: Insights from a Configuration-Interaction-Based Solver for Dynamical Mean Field Theory
Ara Go, Andrew J. Millis
A recently proposed configuration-interaction based impurity solver is used in combination with the single-site and four-site cluster dynamical mean field approximations to investi…
Pyrochlore electrons under pressure, heat and field: shedding light on the iridates
William Witczak-Krempa, Ara Go, Yong Baek Kim
We study the finite temperature and magnetic field phase diagram of electrons on the pyrochlore lattice subject to a local repulsion as a model for the pyrochlore iridates. We prov…
Correlation effects on 3D topological phases: from bulk to boundary
Ara Go, William Witczak-Krempa, Gun Sang Jeon +2
Topological phases of quantum matter defy characterization by conventional order parameters but can exhibit quantized electro-magnetic response and/or protected surface states. We…
Phase transitions and spectral properties of the ionic Hubbard model in one dimension
Ara Go, Gun Sang Jeon
The ionic Hubbard model is investigated at half filling at zero temperature. We apply the cellular dynamical mean-field theory to the one-dimensional ionic Hubbard model to compute…
Properties of the one-dimensional Hubbard model: cellular dynamical mean-field description
Ara Go, Gun Sang Jeon
The one-dimensional half-filled Hubbard model is considered at zero temperature within the cellular dynamical mean-field theory (CDMFT). By the computation of the spectral gap and…