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JETP Letters

, Volume 92, Issue 10, pp 681–686 | Cite as

Fermions with cubic and quartic spectrum

  • T. T. Heikkilä
  • G. E. Volovik
Condensed Matter

Abstract

We study exotic fermions with spectrum E 2p 2N . Such spectrum emerges in the vicinity of the Fermi point with multiple topological charge N, if special symmetry is obeyed. When this symmetry is violated, the multiple Fermi point typically splits into N elementary Fermi points, i.e., Dirac points with N = 1 and spectrum E 2p 2.

Keywords

JETP Letter Topological Charge Dirac Point Lorentz Symmetry Fermi Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  1. 1.Low Temperature LaboratoryAalto University, School of Science and TechnologyAaltoFinland
  2. 2.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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