Effect of energy-band structures on the propagation of ultrasound in degenerate semiconductors

Journal Article · Tue Jun 01 00:00:00 EDT 1982 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.331196· OSTI ID:5196447

Wu, C; Tsai, J

The effect of parabolic and nonparabolic band structures on the propagation of ultrasound at an angle theta relative to the direction of a dc magnetic field B in a degenerate semiconductor such as n-type InSb is investigated by using a quantum treatment which is valid at high frequencies and in strong magnetic fields. Numerical results show that the absorption coefficient and change in sound velocity depend strongly on the direction of the propagation of ultrasound relative to the magnetic field for both parabolic and nonparabolic band structures. However, the absorption coefficient and change in sound velocity for the nonparabolic band structure will diminish and become small in the intermediate-magnetic-field region when the angle theta is larger than 30/sup 0/.

• Research Organization: Department of Applied Mathematics, National Chiao Tung University, Hsinchu, Taiwan, China
• OSTI ID: 5196447
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 53:6; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTIVITY
CURRENTS
DIRECT CURRENT
ELECTRIC CURRENTS
ENERGY LEVELS
INCIDENCE ANGLE
MAGNETIC FIELDS
MATERIALS
MATHEMATICAL MODELS
MECHANICS
N-TYPE CONDUCTORS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
QUANTUM MECHANICS
SEMICONDUCTOR MATERIALS
SOUND WAVES
ULTRASONIC WAVES
VELOCITY
WAVE PROPAGATION