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13 papers · 2 filters
Effect of surface state hybridization on current-induced spin-orbit torque in thin topological insulator films
Cong Son Ho, Yi Wang, Zhuo Bin Siu +3
We investigate the current-induced spin-orbit torque in thin topological insulator (TI) films in the presence of hybridization between the top and bottom surface states. We formula…
Emergent Phenomena Induced by Spin-Orbit Coupling at Surfaces and Interfaces
Anjan Soumyanarayanan, Nicolas Reyren, Albert Fert +1
Spin-orbit coupling (SOC) describes the relativistic interaction between the spin and momentum degrees of freedom of electrons, and is central to the rich phenomena observed in con…
Anomalous tunneling characteristic of Weyl semimetals with tilted energy dispersion
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +2
Weyl semimetal is a recently discovered state of quantum matter, which generally possesses tilted energy dispersion. Here, we investigate the electron tunneling through a Weyl semi…
Spin accumulation in disordered topological insulator thin films
Zhuo Bin Siu, Ho Cong Son, Mansoor bin Abdul Jalil +1
Topological insulator (TI) thin films differ from the more commonly studied semi-infinite bulk TIs in that the former possesses both top and bottom surfaces where the surface state…
Effective Hamiltonian for surface states of topological insulator nanotubes
Zhuo Bin Siu, Mansoor B. A. Jalil, Seng Ghee Tan
In this work we derive an effective Hamiltonian for the surface states of a hollow topological insulator (TI) nanotube with finite width walls. Unlike a solid TI cylinder, a TI nan…
The role of exchange interaction in nitrogen vacancy centre-based magnetometry
Cong Son Ho, Seng Ghee Tan, Mansoor B. A. Jalil +2
We propose a multilayer device comprising of a thin-film-based ferromagnetic hetero-structure (FMH) deposited on a diamond layer doped with nitrogen vacancy centers (NVC's). We fin…