A Quantum Hall Phase Transition in nu=0 Graphene

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हिंदी रूपांतरण

Event End Date

11/01/2017

Event Title

A Quantum Hall Phase Transition in nu=0 Graphene

Event Details

Seminar of the School of Physical Sciences

A Quantum Hall Phase Transition in nu=0 Graphene

Ganapathy Murthy
(University of Kentucky, Lexington)

Date: January 11, 2017 (Wednesday)

Abstract: Graphene is now well known as a remarkable two-dimensional material that is described by a Dirac-like spectrum at low energies. In the presence of a perpendicular magnetic field, Landau quantization occurs and one observes the quantum Hall effect. A couple of years ago it was observed that a quantum phase transition occurs as a function of the Zeeman coupling strength in particle-hole symmetric (or nu=0) Graphene. I will talk about the qualitative physics of this transition, as well as some detailed calculations we have carried out to make predictions for edge transport.

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Initially, established as a Centre for Chinese and Japanese Studies, it subsequently grew to include Korean Studies as well. At present there are eight faculty members in the Centre. Several distinguished faculty who have now retired include the late Prof. Gargi Dutt, Prof. P.A.N. Murthy, Prof. G.P. Deshpande, Dr. Nranarayan Das, Prof. R.R. Krishnan and Prof. K.V. Kesavan. Besides, Dr. Madhu Bhalla served at the Centre in Chinese Studies Programme during 1994-2006. In addition, Ms. Kamlesh Jain and Dr. M. M. Kunju served the Centre as the Documentation Officers in Chinese and Japanese Studies respectively.

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