TY - JOUR
T1 - Hall effect and two-dimensional electron gas in black phosphorus
AU - Baba, M.
AU - Nakamura, Y.
AU - Takeda, Y.
AU - Shibata, K.
AU - Morita, A.
AU - Koike, Y.
AU - Fukase, T.
PY - 1992/12/1
Y1 - 1992/12/1
N2 - 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.
AB - 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.
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U2 - 10.1088/0953-8984/4/6/018
DO - 10.1088/0953-8984/4/6/018
M3 - Article
AN - SCOPUS:36149029524
VL - 4
SP - 1535
EP - 1544
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
SN - 0953-8984
IS - 6
M1 - 018
ER -