276 citations · 804 across the 31 of their papers we have counts for
32 papers
Emergence of stable meron quartets in twisted magnets
Kyoung-Min Kim, Gyungchoon Go, Moon Jip Park +1
The investigation of twist engineering in easy-axis magnetic systems has revealed the remarkable potential for generating topological spin textures, such as magnetic skyrmions. Her…
Controllable magnetic domains in twisted trilayer magnets
Kyoung-Min Kim, Moon Jip Park
The use of moiré patterns to manipulate two-dimensional materials has facilitated new possibilities for controlling material properties. The moiré patterns in the two-dimensional m…
Exceptional Classifications of Non-Hermitian Systems
Jung-Wan Ryu, Jae-Ho Han, Chang-Hwan Yi +2
Eigenstate coalescence in non-Hermitian systems is widely observed in diverse scientific domains encompassing optics and open quantum systems. Recent investigations have revealed t…
Topological Phase Transitions of Generalized Brillouin Zone
Sonu Verma, Moon Jip Park
It has been known that the bulk-boundary correspondence (BBC) of the non-Hermitian skin effect is characterized by the topology of the complex eigenvalue spectra, while the topolog…
Realization of Non-Hermitian Hopf Bundle Matter
Yung Kim, Hee Chul Park, Minwook Kyung +6
Line excitations in topological phases are a subject of particular interest because their mutual linking structures encode robust topological information of matter. It has been rec…
Theory of Moire Magnets and Topological Magnons: Applications to Twisted Bilayer CrI3
Kyoung-Min Kim, Do Hoon Kiem, Grigory Bednik +2
We develop a comprehensive theory of twisted bilayer magnetism. Starting from the first-principles calculations of two-dimensional honeycomb magnet CrI3, we construct the generic s…
Replica Higher-Order Topology of Hofstadter Butterflies in Twisted Bilayer Graphene
Sun-Woo Kim, Sunam Jeon, Moon Jip Park +1
The Hofstadter energy spectrum of twisted bilayer graphene is found to have recursive higher-order topological properties. We demonstrate that higher-order topological insulator (H…
Bloch theorem dictated wave chaos in microcavity crystals
Chang-Hwan Yi, Hee Chul Park, Moon Jip Park
Universality class of wave chaos emerges in many areas of science, such as molecular dynamics, optics, and network theory. In this work, we generalize the wave chaos theory to cavi…
Strong interlayer coupling and stable topological flat bands in twisted bilayer photonic Moire superlattices
Chang-Hwan Yi, Hee Chul Park, Moon Jip Park
The moiré superlattice of misaligned atomic bilayers paves the way for designing a new class of materials with wide tunability. In this work, we propose a photonic analog of the mo…
Disorder-driven Phase Transitions of Second-order Non-Hermitian Skin Effects
Kyoung-Min Kim, Moon Jip Park
Non-Hermitian skin effect exhibits the collapse of the extended bulk modes into the extensive number of localized boundary states in open boundary conditions. Here we demonstrate t…
Length scale formation in the Landau levels of quasicrystals
Junmo Jeon, Moon Jip Park, SungBin Lee
Exotic tiling patterns of quasicrystals have motivated extensive studies of quantum phenomena such as critical states and phasons. Nevertheless, the systematic understanding of the…
Hinge Magnons from Non-collinear Magnetic Order in Honeycomb Antiferromagnet
Moon Jip Park, SungBin Lee, Yong Baek Kim
We propose that non-collinear magnetic order in quantum magnets can harbor a novel higher-order topological magnon phase with non-Hermitian topology and hinge magnon modes. We cons…
Geometric Superconductivity in 3D Hofstadter Butterfly
Moon Jip Park, Yong Baek Kim, SungBin Lee
Electrons on the lattice subject to a strong magnetic field exhibit the fractal spectrum of electrons, which is known as the Hofstadter butterfly. In this work, we investigate unco…
Pressure Induced Topological Superconductivity in the Spin-Orbit Mott Insulator GaTa4Se8
Moon Jip Park, GiBaik Sim, Min Yong Jeong +3
Lacunar spinel GaTaSe is a unique example of spin-orbit coupled Mott insulator described by molecular states. It becomes superconducting at T=5…
Higher-Order Topological Instanton Tunneling Oscillation
Moon Jip Park, Sunam Jeon, SungBin Lee +2
We propose a new type of instanton interference effect in two-dimensional higher-order topological insulators. The intercorner tunneling consists of the instanton and the anti-inst…
Multipolar superconductivity in Luttinger semimetals
GiBaik Sim, Archana Mishra, Moon Jip Park +3
Topological superconductivity in multiband systems has received much attention due to a variety of possible exotic superconducting order parameters as well as non-trivial bulk and…
Triplet-Superconductivity in Triple-Band Crossings
GiBaik Sim, Moon Jip Park, SungBin Lee
Multi-band superconductivity in topological semimetals are the paradigms of unconventional superconductors. Their exotic gap structures and topological properties have fascinated s…
Higher-Order Topological Insulator in Twisted Bilayer Graphene
Moon Jip Park, Youngkuk Kim, Gil Young Cho +1
Higher-order topological insulators are newly proposed topological phases of matter, whose bulk topology manifests as localized modes at two- or higher-dimensional lower boundaries…
Topological -wave Superconductivity and Nodal Line-Arc Intersections in Weyl Semimetals
Gregory A. Hamilton, Moon Jip Park, Matthew J. Gilbert
Superconducting Weyl semimetals present a novel and promising system to harbor new forms of unconventional topological superconductivity. Within the context of time-reversal symmet…
Emergent Localization in Dodecagonal Bilayer Quasicrystals
Moon Jip Park, Hee Seung Kim, SungBin Lee
A new type of long-range ordering in the absence of translational symmetry gives rise to drastic revolution of our common knowledge in condensed matter physics. Quasicrystal, as su…
Topological d+s wave superconductors in a multi-orbital quadratic band touching system
GiBaik Sim, Archana Mishra, Moon Jip Park +3
Realization of topological superconductors is one of the most important goals in studies of topological phases in quantum materials. In this work, we theoretically propose a novel…
Coupled Wire Models of Interacting Dirac Nodal Superconductors
Moon Jip Park, Syed Raza, Matthew J. Gilbert +1
Topological nodal superconductors possess gapless low energy excitations that are characterized by point or line nodal Fermi surfaces. In this work, using a coupled wire constructi…
Impact of thermal fluctuations on transport in antiferromagnetic semimetals
Youngseok Kim, Moon Jip Park, David G. Cahill +1
Recent demonstrations on manipulating antiferromagnetic (AF) order have triggered a growing interest in antiferromagnetic metal (AFM), and potential high-density spintronic applica…
Finite momentum Cooper pairing in 3D topological insulator Josephson junctions
Angela Q. Chen, Moon Jip Park, Stephen T. Gill +4
Unconventional superconductivity arising from the interplay between strong spin-orbit coupling and magnetism is an intensive area of research. One form of unconventional supercondu…