6 papers
Reconfigurable Defect States in Non-Hermitian Topolectrical Chains with Gain and Loss
S. M. Rafi-Ul-Islam, Zhuo Bin Siu, Md Saddam Hossain Razo +1
We investigate the interplay between the non-Hermitian skin effect (NHSE), parity-time (PT) symmetry, and topological defect states in a finite non-Hermitian Su-Schrieffer-Heeger (…
Anomalous Non-Hermitian Skin Effects in Coupled Hermitian Chains with Cross-Coupling
S M Rafi-Ul-Islam, Zhuo Bin Siu, Md. Saddam Hossain Razo +1
In this work, we demonstrate the presence of an anomalous non-Hermitian skin effects which decay from both ends of a system consisting of two coupled Hermitian chains induced by no…
Exceptional Points and Braiding Topology in Non-Hermitian Systems with long-range coupling
S. M. Rafi-Ul-Islam, Zhuo Bin Siu, Md. Saddam Hossain Razo +1
We present a study of complex energy braiding in a 1D non-Hermitian system with th order long range asymmetrical coupling. Our work highlights the emergence of novel topological…
Saturation Dynamics in Non-Hermitian Topological Sensing Systems
S. M. Rafi-Ul-Islam, Zhuo Bin Siu, Md. Saddam Hossain Razo +1
A class of non-Hermitian topological sensors (NTOSs) was recently proposed in which the NTOS comprises a non-Hermitian Su-Schrieffer-Heeger chain with a measurant-dependent couplin…
Second-order charge and spin transport in LaO/STO system in the presence of cubic Rashba spin orbit couplings
Zhuo Bin Siu, Anirban Kundu, Mansoor B. A. Jalil
Certain non-centrosymmetric materials with broken time-reversal symmetry may exhibit non-reciprocal transport behavior under an applied electric field in which the charge and spin…
Spin Orbit Torque on a Curved Surface
Seng Ghee Tan, Che Chun Huang, Mansoor B. A. Jalil +1
We provide a general formulation of the spin-orbit coupling on a 2D curved surface. Considering the wide applicability of spin-orbit effect in spinor-based condensed matter physics…