3 papers
cond-mat.mes-hall2024
Robust Majorana bound state in pseudo-spin domain wall of 2-D topological insulator
Subhadeep Chakraborty, Vivekananda Adak, Sourin Das
We investigate helical edge states (HES) emerging at the composite domain wall of spin and pseudo-spin degrees of freedom in a 2-D bulk governed by the Bernevig-Hughes-Zhang Hamilt…
cond-mat.mes-hall2023
Identification of odd-frequency superconducting pairing in Josephson junctions
Subhajit Pal, Aabir Mukhopadhyay, Vivekananda Adak +1
Optimal choice of spin polarization enables electron injection into the helical edge state at a precise position, despite the uncertainty principle, permitting access to specific n…
cond-mat.mes-hall2019
Spin Berry phase in a helical edge state: Sz nonconservation and transport signatures
Vivekananda Adak, Krishanu Roychowdhury, Sourin Das
Topological protection of edge state in quantum spin Hall systems relies only on time-reversal symmetry. Hence, S z conservation on the edge can be relaxed which can have an interf…