Hall effect and two-dimensional electron gas in black phosphorus

M. Baba, Y. Nakamura, Y. Takeda, K. Shibata, A. Morita, Y. Koike, T. Fukase

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The Hall coefficient and electric conductivity of black phosphorus prepared by the bismuth-flux method were measured at low temperatures. It is found that the conductivity shows log T-like behaviour below about 5 K and the Hall coefficient changes its sign from plus to minus at around 7 K with decreasing temperature. These results can be analysed successfully on the basis of a three-carrier model, in which bulk holes, variable-range-hopping holes and two-dimensional electrons take part in the electric conduction at low temperatures, except in the case of strong magnetic fields below 7 K. The present analysis supports the fact that magneto-electric properties observed at low temperatures in black phosphorus crystals originate from the 2D Anderson localization in an inversion layer on the surface.

Original languageEnglish
Article number018
Pages (from-to)1535-1544
Number of pages10
JournalJournal of Physics: Condensed Matter
Volume4
Issue number6
DOIs
Publication statusPublished - 1992 Dec 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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