Accession Number:

AD0734720

Title:

Magnetic-Field-Induced Semiconductor-Semimetal Transition in Bismuth-Antimony Alloys,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO)

Personal Author(s):

Report Date:

1971-01-01

Pagination or Media Count:

5.0

Abstract:

Accurate measurements of the temperature dependence of the longitudinal magnetoresistance of single crystal Bi1-xSbx alloys have been made. Magnetic fields are in the range 1-100 kilogauss and are oriented parallel to the trigonal axis. Alloy concentrations are near 10 at. Sb and temperatures are in the range 1.25-50K. At very high fields the resistance increases with increasing temperature in a metallic manner, in contrast to the semiconductor behaviour observed at much lower fields. At intermediate fields the resistance first decreases with increasing temperature and later increases, a behaviour which may perhaps be associated with an intermediate excitonic insulator phase. Author

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE