3 papers
cond-mat.mes-hall2019
Tunable Coupling between Surface States of a Three-Dimensional Topological Insulator in the Quantum Hall Regime
Su Kong Chong, Kyu Bum Han, Taylor D. Sparks +1
The paired top and bottom Dirac surface states, each associated with a half-integer quantum Hall (QH) effect, and a resultant integer QH conductance (νe2/h), are hallmarks of a thr…
cond-mat.mes-hall2018
Topological Insulator-Based van der Waals Heterostructures for Effective Control of Massless and Massive Dirac Fermions
Su Kong Chong, Kyu Bum Han, Akira Nagaoka +8
Three dimensional (3D) topological insulators (TIs) are an important class of materials with applications in electronics, spintronics and quantum computing. With the recent develop…
cond-mat.mtrl-sci2018
Enhancement in surface mobility and quantum transport of Bi_(2-x)Sb_(x)Te_(3-y)Se_(y) topological insulator by controlling the crystal growth conditions
Kyu-Bum Han, Su Kong Chong, Akira Nagaoka +4
Despite numerous studies on three-dimensional topological insulators (3D TIs), the controlled growth of high quality (bulk-insulating and high mobility) TIs remains a challenging s…