203 citations · 557 across the 29 of their papers we have counts for
30 papers
Higher Chern Number States in Curved Periodic Nanowires
Zhuo Bin Siu, Seng Ghee Tan, Mansoor B. A. Jalil
The coupling between the spin and momentum degrees of freedom due to spin-orbit interactions (SOI) suggests that the strength of the latter can be modified by controlling the motio…
Newton's second law in spin-orbit torque
Cong Son Ho, Seng Ghee Tan, Shun-Qing Shen +1
Spin-orbit torque (SOT) refers to the excitation of magnetization dynamics via spin-orbit coupling under the application of a charged current. In this work, we introduce a simple a…
Electrically tunable valley polarization in Weyl semimetals with tilted energy dispersion
Can Yesilyurt, Zhuo Bin Siu, Seng Ghee Tan +3
Tunneling transport across the p-n-p junction of Weyl semimetal with tilted energy dispersion is investigated. We report that the electrons around different valleys experience oppo…
Conductance modulation in Weyl semimetals with tilted energy dispersion without a band gap
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +1
We investigate the tunneling conductance of Weyl semimetal with tilted energy dispersion by considering electron transmission through a p-n-p junction with one-dimensional electric…
Adiabatic approximation for a uniform DC electric field
Zhuo Bin Siu, Mansoor B. A. Jalil, Seng Ghee Tan
In this work, we show that the disorder-free Kubo formula for the non-equilibrium value of an observable due to a DC electric field, represented by in the Hamiltonian,…
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…
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…
Influence of Fermi arc states and double Weyl node on tunneling in a Dirac semimetal
Zhuo Bin Siu, Can Yesilyurt, Mansoor B. A. Jalil +1
Most theoretical studies of tunneling in Dirac and the closely related Weyl semimetals have modeled these materials as single Weyl nodes described by the three-dimensional Dirac eq…
Gauge field in systems with spin orbit interactions and additional discrete degrees of freedom to real spin
Zhuo Bin Siu, Mansoor B. A. Jalil, Seng Ghee Tan
The spin gauge field formalism has been used to explain the emergence of out of plane spin accumulation in two-dimensional spin orbit interaction (SOI) systems in the presence of a…
Klein tunneling in Weyl semimetals under the influence of magnetic field
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +1
Klein tunneling refers to the absence of normal backscattering of electrons even under the case of high potential barriers. At the barrier interface, the perfect matching of electr…
Curvature induced out of plane spin accumulation
Zhuo Bin Siu, Mansoor B. A. Jalil, Seng Ghee Tan
In this work we show that (real space) curvature in the geometry of curved waveguides with Rashba spin orbit interaction (RSOI) can lead to out of plane spin accumulations. We firs…
Effective Hamiltonian for surface states of \ce{Bi2Te3} nanocylinders with hexagonal warping
Zhuo Bin Siu, Mansoor B. A. Jalil, Seng Ghee Tan
The three-dimensional topological insulator \ce{Bi2Te3} differs from other topological insulators in the \ce{Bi2Se3} family in that the effective Hamiltonian of its surface states…
Dirac semimetal thin films in in-plane magnetic fields
Zhuo Bin Siu, Mansoor B. A. Jalil, Seng Ghee Tan
In this work we study the effects of in-plane magnetic fields on thin films of the Dirac Semimetal (DSM) \ce{Na2Bi} where one of the in-plane directions is perpendicular to the …
Magnified Damping under Rashba Spin Orbit Coupling
Seng Ghee Tan, Mansoor B. A. Jalil
The spin orbit coupling spin torque consists of the field-like [REF: S.G. Tan et al., arXiv:0705.3502, (2007).] and the damping-like terms [REF: H. Kurebayashi et al., Nature Nanot…
Gauge Physics of Spin Hall Effect
Seng Ghee Tan, Mansoor B. A. Jalil, Congson Ho +2
Spin Hall effect (SHE) has been discussed in the context of Kubo formulation, geometric physics, spin orbit force, and numerous semi-classical treatments. It can be confusing if th…
Efficient Dual Spin-Valley Filter In Strained Silicene
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +1
We propose a highly efficient silicene device for dual spin and valley filtering. The device consists of two different barrier regions: the first is a region under uniaxial strain,…
Gate-control of spin-motive force and spin-torque in Rashba SOC systems
Cong Son Ho, Mansoor B. A. Jalil, Seng Ghee Tan
The introduction of a strong Rashba spin orbit coupling (SOC) had been predicted to enhance the spin motive force (SMF) [see Phys. Rev. Lett. {\bf 108}, 217202 (2012)]. In this wor…
Spin force and intrinsic spin Hall effect in spintronics systems
Cong Son Ho, Mansoor B. A. Jalil, Seng Ghee Tan
We investigate the spin Hall effect (SHE) in a wide class of spin-orbit coupling systems by using spin force picture. We derive the general relation equation between spin force and…
Spin force and the generation of sustained spin current in time-dependent Rashba and Dresselhauss systems
Cong Son Ho, Mansoor B. A. Jalil, Seng Ghee Tan
The generation of spin current and spin polarization in a 2DEG structure is studied in the presence of Dresselhaus and Rashba spin-orbit couplings (SOC), the strength of the latter…
Spin torque due to non-uniform Rashba spin orbit effect
Ji Chen, Mansoor Bin Abdul Jalil, Seng Ghee Tan
Following the early theoretical descriptions of the spin-orbit-induced spin torque [S.G. Tan et al., arXiv:0705.3502 (2007); S.G.Tan et al., Ann. Phys.326, 207 (2011)], the first e…
Inverse Spin Hall Effect in Ferromagnetic Metal with Rashba Spin Orbit Coupling
M. -J. Xing, M. B. A. Jalil, Seng Ghee Tan +1
We report an intrinsic form of the inverse spin Hall effect (ISHE) in ferromagnetic (FM) metal with Rashba spin orbit coupling (RSOC), which is driven by a normal charge current. U…