14 citations · 37 across the 8 of their papers we have counts for
8 papers · 1 filter
The Geometric phase and fractional orbital angular momentum states in electron vortex beams
Pratul Bandyopadhyay, Banasri Basu, Debashree Chowdhury
We study here fractional orbital angular momentum (OAM) states in electron vortex beams (EVB) from the perspective of geometric phase. We have considered the skyrmionic model of an…
Unified approach towards the dynamics of optical and electron vortex beams
Pratul Bandyopadhyay, Banasri Basu, Debashree Chowdhury
We have proposed a unified framework towards the dynamics of optical and electron vortex beams from the perspective of geometric phase and the associated Hall effects. The unificat…
Electron vortex beams in a magnetic field and spin filter
Debashree Chowdhury, Banasri Basu, Pratul Bandyopadhyay
We investigate the propagation of electron vortex beams in a magnetic field. It is pointed out that when electron vortex beams carrying orbital angular momentum propagate in a magn…
Spin-Orbit gauge and quantum spin Hall effect
B. Basu, P. Bandyopadhyay
We have shown that the non-Abelian spin-orbit gauge field strength of the Rashba and Dresselhaus interactions, when split into two Abelian field strengths, the Hamiltonian of the s…
The Berry phase in ferromagnetic spin systems and anomalous Hall Effect
B. Basu, P. Bandyopadhyay
We have shown that the study of topological aspects of the underlying geometry in a ferromagnetic spin system gives rise to an intrinsic Berry phase. This real space Berry phase ar…
Charge and Statistics of Quasiparticles in Fractional Quantum Hall Effec
B. Basu, P. Bandyopadhyay, S. Dhar
We have studied here the charge and statistics of quasiparticle excitations in FQH states on the basis of the Berry phase approach incorporating the fact that even number of flux q…