Journal of Physics Research and Education, Vol. 02

Permanent URI for this collectionhttps://ir.nbu.ac.in/handle/123456789/5172

EDITORIAL NOTE

We are happy to bring out this second volume of the Departmental journal, Journal of Physics Research and Education. We apologize for the inordinate delay in bringing out this volume. We aim to publish a new volume regularly in every year. The goal of JPRE is to have an amalgamating impact for the diversity of the fields of physics research and physics education. The current volume has a distinctive aspect of this nature contributed together by Ph.D. scholars, Post doctoral scholars and Professors. I hope this volume will reflect the current state of interdisciplinary research, insightful reviews and will indicate the usefulness of their material to physics education.

Rajat K. Dey
Editor-in-Chief

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    Spin and valley dependent transport in a biased dice lattice
    (University of North Bengal, 2024-03) Tamang, Lakpa
    We study the spin and valley-dependent transport in a spin-orbit coupled biased dice lattice. We find that the presence of a bias term and the spin-orbit interaction (SOI) give rise to the spin-split energy spectrum. The SOI couples the valley and the spin degrees of freedom, resulting in a spin and valley-resolved Berry curvature. We find a profound variation in the Berry curvature for different spin states around both valleys. The spin and valley Hall conductivities are calculated for various values of the bias term. We find the interplay between the bias term and SOI term leads to a quantum phase transition from a topological insulating phase to a trivial band insulating phase accompanied by the emergence of the valley Hall effect and the suppression of the spin Hall effect.