Eur. Phys. J. B (2013) 86: 296
https://doi.org/10.1140/epjb/e2013-40180-6

Regular Article

Conformation-dependent electron transport through a biphenyl molecule: circular current and related issues

Physics and Applied Mathematics Unit, Indian Statistical Institute, 203 Barrackpore Trunk Road, 700 108 Kolkata, India

^a e-mail: santanu.maiti@isical.ac.in

Received: 5 March 2013
Received in final form: 30 April 2013
Published online: 26 June 2013

Abstract

We investigate the conformation-dependent electron transfer in a biphenyl molecule within a simple tight-binding framework. The overall junction current and circular currents in two benzene rings driven by applied bias voltage are calculated by using Green’s function formalism. Our analysis may provide the possibilities of using organic molecules with loop substructures to design molecular spintronic devices, indicating the emergence of molecular spintronics.