127 citations · 412 across the 17 of their papers we have counts for
17 papers
Fractonic Quantum Quench in Dipole-constrained Bosons
Yun-Tak Oh, Jung Hoon Han, Hyun-Yong Lee
We investigate the quench dynamics in the dipolar Bose-Hubbard model (DBHM) in one dimension. The boson hopping is constrained by dipole conservation and show fractonic dynamics. T…
Aspects of rank-2 gauge theory in dimensions: construction schemes, holonomies, and sublattice one-form symmetries
Yun-Tak Oh, Salvatore D. Pace, Jung Hoon Han +2
Rank-2 toric code (R2TC), a prototypical archetype of the discrete rank-2 symmetric gauge theory, has properties that differ from those of the standard toric code. Specifically, it…
A Subsystem Ginzburg-Landau and SPT Orders Co-existing on a Graph
Jintae Kim, Hyun-Yong Lee, Jung Hoon Han
We analyze a model demonstrating the co-existence of subsystem symmetry breaking (SSB) and symmetry-protected topological (SPT) order, or subsystem LSPT order for short. Its mathem…
Topological Thermal Hall Effect of Magnons in Magnetic Skyrmion Lattice
Masatoshi Akazawa, Hyun-Yong Lee, Hikaru Takeda +5
Topological transports of fermions are governed by the Chern numbers of the energy bands lying below the Fermi energy. For bosons, e.g. phonons and magnons in a crystal, topologica…
Matrix Product Wave Function of the Ground State and Elementary Excitation in the Spin-1/2 Chain
Jintae Kim, Minsoo Kim, Pramod Padmanabhan +2
We present a variational matrix product state (vMPS) for the ground state of the spin-1/2 Heisenberg model. The MPS effectively organizes the various dimer configurations, in faith…
Construction of Variational Matrix Product States for the Heisenberg Spin-1 Chain
Jintae Kim, Minsoo Kim, Naoki Kawashima +2
We propose a simple variational wave function that captures the correct ground state energy of the spin-1 Heisenberg chain model to within 0.04\%. The wave function is written in t…
Proposal of a spin-one chain model with competing dimer and trimer interactions
Yun-Tak Oh, Hosho Katsura, Hyunyong Lee +1
A new kind of spin-1 chain Hamiltonian consisting of competing dimer and trimer projection operators is proposed. As the relative strengths and signs of the interactions are varied…
Resonating Valence Bond States with Trimer Motifs
Hyunyong Lee, Yun-tak Oh, Jung Hoon Han +1
The trimer resonating valence bond (tRVB) state consisting of an equal-weight superposition of trimer coverings on a square lattice is proposed. A model Hamiltonian of the Rokhsar-…
Classification of trivial spin-1 tensor network states on a square lattice
Hyunyong Lee, Jung Hoon Han
Classification of possible quantum spin liquid (QSL) states of interacting spin-1/2's in two dimensions has been a fascinating topic of condensed matter for decades, resulting in e…
Chirality-driven Hall Transport Phenomena of Spins
Jung Hoon Han, Hyunyong Lee
Experimental and theoretical aspects of Hall-type transport of spins in magnetic insulators are reviewed, with emphasis on their spin chirality origin. A general formalism for line…
Featureless quantum insulator on the honeycomb lattice
Panjin Kim, Hyunyong Lee, Shenghan Jiang +5
We show how to construct fully symmetric, gapped states without topological order on a honey- comb lattice for S = 1/2 spins using the language of projected entangled pair states(P…
Dynamics of magnon fluid in Dzyaloshinskii-Moriya magnet and its manifestation in magnon-Skyrmion scattering
Yun-Tak Oh, Hyunyong Lee, Jin-Hong Park +1
We construct Holstein-Primakoff Hamiltonian for magnons in arbitrary slowly varying spin background, for a microscopic spin Hamiltonian consisting of ferromagnetic spin exchange,Dz…
Thermal Hall Effect of Spins in a Paramagnet
Hyunyong Lee, Jung Hoon Han, Patrick A. Lee
Theory of Hall transport of spins in a correlated paramagnetic phase is developed. By identifying the thermal Hall current operator in the spin language, which turns out to equal t…
Emergence of heavy quasiparticles from a massless Fermi sea: Optical conductivity
Hyunyong Lee, Stefan Kettemann
We study the density of states and the optical conductivity of a Kondo lattice which is immersed in a massless Dirac Fermi sea, as characterized by a linear dispersion relation. As…
Magnetic Quantum Phase Diagram of Magnetic Impurities in 2 Dimensional Disordered Electron Systems
Hyunyong Lee, Stefan Kettemann
The quantum phase diagram of disordered electron systems as function of the concentration of magnetic impurities nm and the local exchange coupling J is studied in the dilute limit…
RKKY Interactions in Graphene: Dependence on Disorder and Gate Voltage
Hyunyong Lee, E. R. Mucciolo, Georges Bouzerar +1
We report the dependence of Ruderman-Kittel-Kasuya-Yoshida\,(RKKY) interaction on nonmagmetic disorder and gate voltage in grapheme. First the semiclassical method is employed to r…
RKKY Interaction in Disordered Graphene
Hyunyong Lee, Junghoon Kim, E. R. Mucciolo +2
We investigate the effects of nonmagnetic disorder on the Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction in graphene by studying numerically the Anderson model with on-site and…