194 citations · 286 across the 8 of their papers we have counts for
8 papers
Landau level states on a topological insulator thin film
Zhihua Yang, Jung Hoon Han
We analyze the four-dimensional Hamiltonian proposed to describe the band structure of the single-Dirac-cone family of topological insulators in the presence of a uniform perpendic…
Skyrmion Lattice in Two-Dimensional Chiral Magnet
Jung Hoon Han, Jiadong Zang, Zhihua Yang +2
We develop a theory of the magnetic field-induced formation of Skyrmion crystal state in chiral magnets in two spatial dimensions, motivated by the recent discovery of the Skyrmion…
Hierarchy of Spin and Valley Symmetry Breaking in Quantum Hall Single Layer Graphene
Zhihua Yang, Jung Hoon Han
We explore several microscopic mechanisms for breaking the fourfold Landau level degeneracy in a single-layer graphene. Valley-scattering random potential, Zeeman interaction…
Green functions and correlation functions of a solvable S=1 quantum Ising spin model with dimerization
Zhi-Hua Yang, Li-Ping Yang, Hai-Na Wu +2
This is a supplementary material of our recent paper\cite{yangPRB}, where a class of exactly solvable S=1 quantum Ising spin models were studied based on the hole decomposition sch…
Magnetic response of the J1-J2 spin Hamiltonian from classical Monte Carlo and Schwinger boson mean field theory
Zhihua Yang, Jung Hoon Kim, Jung Hoon Han
Magnetic susceptibilities at several potential ordering wave vectors (0,0), (π,0), and (π,π) are analyzed for the antiferromagnetic J1-J2 spin Hamiltonian by classical Monte Carlo…
Exact solutions of a class of S=1 quantum Ising spin models
Zhi-Hua Yang, Li-Ping Yang, Hai-Na Wu +2
We propose a hole decomposition scheme to exactly solve a class of spin-1 quantum Ising models with transverse or longitudinal single-ion anisotropy. In this scheme, the spin-1 mod…