455 citations · 1.6k across the 45 of their papers we have counts for
45 papers
Topological phase transitions induced by the variation of exchange couplings in graphene
Jihyeon Park, Gun Sang Jeon
We consider a modified graphene model under exchange couplings. Various quantum anomalous phases are known to emerge under uniform or staggered exchange couplings. We introduce the…
Emergence of new topological gapless phases in the modified square-lattice Kitaev model
Jihyeon Park, Gun Sang Jeon
We investigate emergent topological gapless phases in the square-lattice Kitaev model with additional hopping terms. In the presence of nearest-neighbor hopping only, the model is…
Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3
Kangwon Kim, Soo Yeon Lim, Jae-Ung Lee +7
How a certain ground state of complex physical systems emerges, especially in two-dimensional materials, is a fundamental question in condensed-matter physics. A particularly inter…
Search for exact local Hamiltonians for general fractional quantum Hall states
G J Sreejith, Mikael Fremling, Gun Sang Jeon +1
We report on our systematic attempts at finding local interactions for which the lowest-Landau-level projected composite-fermion wave functions are the unique zero energy ground st…
Topological superconductivity in Landau levels
Gun Sang Jeon, J. K. Jain, C. -X. Liu
The intense search for topological superconductivity is inspired by the prospect that it hosts Majorana quasiparticles. We explore in this work the optimal design for producing top…
Emergent incommensurate correlations in the frustrated ferromagnetic spin-1 chains
Hyeong Jun Lee, MooYoung Choi, Gun Sang Jeon
We study the frustrated ferromagnetic spin-1 chains, where the ferromagnetic nearest-neighbor coupling competes with the antiferromagnetic next-nearest-neighbor coupling. We use th…