Magnetoresistivity and acoustoelectronic effects in a tilted magnetic field in p-Si/SiGe/Si structures with an anisotropic g factor

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776110090189· OSTI ID:21443387

Smirnov, I Yu ^[1]; Suslov, A V ^[2]; Mironov, O A ^[3]; Leadley, D R ^[4]

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1. Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation)
2. National High Magnetic Field Laboratory (United States)
3. University of Warwick Science Park, Warwick SEMINANO R and D Centre (United Kingdom)
4. University of Warwick Science Park, Department of Physics (United Kingdom)

Magnetoresistivity {rho}{sub xx} and {rho}{sub xy} and the acoustoelectronic effects are measured in p-Si/SiGe/Si with an impurity concentration p = 1.99 x 10{sup 11} cm{sup -2} in the temperature range 0.3-2.0 K and an tilted magnetic field up to 18 T. The dependence of the effective g factor on the angle of magnetic field tilt {theta} to the normal to the plane of a two-dimensional p-Si/SiGe/Si channel is determined. A first-order ferromagnet-paramagnet phase transition is observed in the magnetic fields corresponding to a filling factor {nu} = 2 at {theta} {approx} 59{sup o}-60{sup o}.

• OSTI ID: 21443387
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 111, Issue 3; Other Information: DOI: 10.1134/S1063776110090189; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACOUSTICS
ANISOTROPY
CONCENTRATION RATIO
FERROMAGNETISM
GERMANIUM SILICIDES
HETEROJUNCTIONS
IMPURITIES
LANDE FACTOR
MAGNETIC FIELDS
MAGNETORESISTANCE
PARAMAGNETISM
PHASE TRANSFORMATIONS
P-TYPE CONDUCTORS
SILICON
TEMPERATURE RANGE 0000-0013 K
DIMENSIONLESS NUMBERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
GERMANIUM COMPOUNDS
MAGNETISM
MATERIALS
PHYSICAL PROPERTIES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR MATERIALS
SEMIMETALS
SILICIDES
SILICON COMPOUNDS
TEMPERATURE RANGE