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Magnetostrain-driven quantum engine on a graphene flake

Francisco J. Peña1 and Enrique Muñoz2,3,*

  • 1Instituto de Física, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2950, Valparaíso, Chile
  • 2Facultad de Física, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago, Chile
  • 3Research Center for Nanotechnology and Advanced Materials CIEN-UC, Pontificia Universidad Católica de Chile, Santiago, Chile

  • *munozt@fis.puc.cl
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Phys. Rev. E 91, 052152 – Published 29 May, 2015

DOI: https://doi.org/10.1103/PhysRevE.91.052152

Abstract

We propose an alternative conceptual design for a graphene-based quantum engine, driven by a superposition of mechanical strain and an external magnetic field. Engineering of strain in a nanoscale graphene flake creates a gauge field with an associated uniform pseudomagnetic field. The strain-induced pseudomagnetic field can be combined with a real magnetic field, leading to the emergence of discrete relativistic Landau levels within the single-particle picture. The interlevel distance and hence their statistical population can be modulated by quasistatically tuning the magnetic field along a sequence of reversible transformations that constitute a quantum mechanical analog of the classical Otto cycle.

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Outline

Information

Phys. Rev. E 91, 052152– Published 29 May, 2015
  • Received 17 December 2014
  • Revised 23 March 2015

©2015 American Physical Society

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