Technical Physics Letters

, Volume 34, Issue 1, pp 30–33 | Cite as

Metal-insulator transition in graphite: A comparison to heterostructures with high carrier mobility

  • E. V. Konenkova
  • D. Grundler
  • M. Morgenstern
  • R. Wiesendanger


Conditions for a transition from the insulator (I) to metal (M) state in the electron system of highly oriented pyrolytic graphite (HOPG) have been studied by means of magnetotransport measurements in a broad temperature range (0.3–150 K). In magnetic fields below a certain critical value (B < B c ≈ 0.05 T), HOPG exhibits the classical magnetoresistance, while for B > B c, the temperature dependence of the resistance is determined by the state (insulator versus metal) of the electron system. The M-I transition in HOPG, by analogy with that in heterostructures with two-dimensional electron gas, obeys the power law T c ∞ (BB c) k (k = 0.25) and is related to the spin-orbit interaction of electron waves.

PACS numbers

71.30.+h 73.43.Qt 


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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • E. V. Konenkova
    • 1
  • D. Grundler
    • 2
  • M. Morgenstern
    • 2
  • R. Wiesendanger
    • 3
  1. 1.Ioffe Physicotechnical InstituteRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Institute of Applied PhysicsUniversity of HamburgHamburgGermany
  3. 3.Institute of Experimental Physics II, RWTH AachenAachenGermany

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