FIZIKA A 9 (2000) 4 , 153-158

LETTER TO THE EDITOR

ANOMALOUS MAGNETORESISTANCE OF SINGLE CRYSTALS OF DOPED BISMUTH

DIPALI BANERJEE^a, RAMENDRANARAYAN BHATTACHARYA^b and KUSHALENDU GOSWAMI^c

^aDepartment of Physics, B. E. College (D. U.), Howrah 711103, India

^cDepartment of Physics, Jadavpur University, Jadavpur, Calcutta 700032, India

Received 2 December 1999 ; revised manuscript received 18 August 2000
Accepted 23 October 2000

Measurements of magnetoresistance of single crystals of bismuth doped with tin and lead in the temperature range 100 K to 300 K are reported. Both tin and lead have a marked effect in changing the band structure of bismuth. Temperature variations show that with the increased concentration of impurity, Dr/r₀ is less dependent on temperature, and the magnetic field variation of Dr/r₀ does not obey the quadratic dependence on magnetic field strength.

PACS numbers: 75.20.Ck
UDC 537.621.2, 537.622

Keywords: magnetoresistance, single crystals of bismuth doped with tin and lead, temperature and the magnetic field variation, deviation from quadratic dependence on magnetic field strength