58 citations · 217 across the 11 of their papers we have counts for
11 papers
Orbital Magnetization under an Electric Field and Orbital Magnetoelectric Polarizabilty for a Bilayer Chern System
Si-Si Wang, Yi-Ming Dai, Hui-Hui Wang +3
In the real space formalism of orbital magnetization (OM) for a Chern insulator without an external electric field, it is correct to average the local OM either over the bulk regio…
Transport through Quantum Anomalous Hall Bilayers with Lattice Mismatch
Yan Yu, Yan-Yang Zhang, Si-Si Wang +4
We theoretically investigate quantum transport properties of quantum anomalous Hall bilayers, with arbitrary ratio of lattice constants, i.e., with lattice mismatch. In the simples…
Effects of Boundary on Orbital Magnetization for a Bilayer System with Different Chern Numbers
Si-Si Wang, Yan Yu, Ji-Huan Guan +3
The real space formalism of orbital magnetization (OM) is an average of the local OM over some appropriate region of the system. Previous studies prefer a bulk average (i.e., witho…
Numerical Study of Disorder on the Orbital Magnetization in Two Dimensions
Si-Si Wang, Yan-Yang Zhang, Ji-Huan Guan +3
The modern theory of orbital magnetization (OM) was developed by using Wannier function method, which has a formalism similar with the Berry phase. In this manuscript, we perform a…
Chebyshev Polynomial Method to Landauer-Büttiker Formula of Quantum Transport in Nanostructures
Yan Yu, Yan-Yang Zhang, Lei Liu +4
Landauer-Büttiker formula describes the electronic quantum transports in nanostructures and molecules. It will be numerically demanding for simulations of complex or large size sys…
Localization Trajectory and Chern-Simons axion coupling for Bilayer Quantum Anomalous Hall Systems
Si-Si Wang, Yan-Yang Zhang, Ji-Huan Guan +3
Quantum anomalous Hall (QAH) multilayers provide a platform of topological materials with high Chern numbers. We investigate the localization routes of bilayer QAH systems with Che…
Ultrafast Electron-Lattice Coupling Dynamics in VO2 and V2O3 Thin Films
Elsa Abreu, Stephanie N. Gilbert Corder, Sun Jin Yun +11
Ultrafast optical pump - optical probe and optical pump - terahertz probe spectroscopy were performed on vanadium dioxide (VO2) and vanadium sesquioxide (V2O3) thin films over a wi…
Dynamic conductivity scaling in photoexcited V2O3 thin films
Elsa Abreu, Siming Wang, Gabriel Ramirez +4
Optical-pump terahertz-probe spectroscopy is used to investigate ultrafast far-infrared conductivity dynamics during the insulator-to-metal transition (IMT) in vanadium sesquioxide…
Electrical Breakdown in a V2O3 device at the Insulator to Metal Transition
S. Guénon, S. Scharinger, Siming Wang +4
We have measured the electrical properties of a V2O3 thin film micro bridge at the insulator metal transition (IMT). Discontinuous jumps to lower voltages in the current voltage ch…
Exchange Bias Induced by the Fe3O4 Verwey transition
J. de la Venta, M. Erekhinsky, Siming Wang +3
We present a study of the exchange bias in different configurations of V2O3 thin films with ferromagnetic layers. The exchange bias is accompanied by a large vertical shift in the…
Magnetization ground states and phase diagrams for a nano-sized Co hollow sphere : an onion-type magnetization state
Desheng Kong, Siming Wang, Chinping Chen
The magnetization ground states (MGSs) for a nanosized Co hollow sphere, with the outer radius, R < 50 nm, have been studied numerically by micromagnetic simulation using object or…