Bloch-Zener Oscillations across a Merging Transition of Dirac Points

Lih-King Lim, Jean-Noël Fuchs, and Gilles Montambaux
Phys. Rev. Lett. 108, 175303 – Published 26 April 2012; Erratum Phys. Rev. Lett. 108, 199901 (2012)
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Abstract

Bloch oscillations are a powerful tool to investigate spectra with Dirac points. By varying band parameters, Dirac points can be manipulated and merged at a topological transition toward a gapped phase. Under a constant force, a Fermi sea initially in the lower band performs Bloch oscillations and may Zener tunnel to the upper band mostly at the location of the Dirac points. The tunneling probability is computed from the low-energy universal Hamiltonian describing the vicinity of the merging. The agreement with a recent experiment on cold atoms in an optical lattice is very good.

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  • Received 12 January 2012
  • Corrected 30 April 2012

DOI:https://doi.org/10.1103/PhysRevLett.108.175303

© 2012 American Physical Society

Corrections

30 April 2012

Erratum

Publisher’s Note: Bloch-Zener Oscillations across a Merging Transition of Dirac Points [Phys. Rev. Lett. 108, 175303 (2012)]

Lih-King Lim, Jean-Noël Fuchs, and Gilles Montambaux
Phys. Rev. Lett. 108, 199901 (2012)

Authors & Affiliations

Lih-King Lim, Jean-Noël Fuchs, and Gilles Montambaux

  • Laboratoire de Physique des Solides, CNRS UMR 8502, Université Paris-Sud, F-91405 Orsay cedex, France

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Issue

Vol. 108, Iss. 17 — 27 April 2012

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