Theory of electromechanical coupling in dynamical graphene

Mircea Trif, Pramey Upadhyaya, and Yaroslav Tserkovnyak
Phys. Rev. B 88, 245423 – Published 16 December 2013

Abstract

We study the coupling between elastic membrane distortions and Dirac electrons in a dynamical sheet of graphene. This coupling can be understood in terms of an effective gauge field acting on electrons, which has two contributions: (quasi)static and purely dynamic, of the Berry-phase origin, both in general engendering fictitious electric and magnetic fields. The static gauge potential (along with the electromagnetic field that it parametrizes) is known to be of opposite sign at the K and K valleys, while we find the same dynamic gauge potential at the two valleys, similarly to the true electromagnetic field. The mechanical fluctuations can thus mediate an indirect coupling between charge and valley degrees of freedom.

  • Figure
  • Figure
  • Received 29 October 2012

DOI:https://doi.org/10.1103/PhysRevB.88.245423

©2013 American Physical Society

Authors & Affiliations

Mircea Trif1, Pramey Upadhyaya2, and Yaroslav Tserkovnyak1

  • 1Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
  • 2Department of Electrical Engineering, University of California, Los Angeles, California 90095, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 88, Iss. 24 — 15 December 2013

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×