A scaling approach to the transverse magnetoresistance of kish graphite at 77 K

✍ Scribed by Y. Kaburagi; Y. Hishiyama

• Book ID: 104107124
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 565 KB
• Volume: 35
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/s0008-6223(97)00087-0

✦ Synopsis

A scaling of magnetoresistance ApIp,, was examined using B/p,, at liquid nitrogen temperature for kish graphite (KG) specimens with different values of residual resistivity ratio RRR between 3.92 and 35.6. The plots of ApIp,, against B/p, and the exponent n against B/p0 in Ap/pOtcB" varied systematically with RRR. The exponent n against B/p,, plots showed a minimum and maximum of n. The values of the minimum and maximum decrease with decreasing RRR, and the values of B/p0 at the minimum and the maximum approach each other with the decrease of RRR. The minimum and maximum seem to coincide for the specimen with lower RRR than 3.92. The saturation of n around n = 1 is found in the high B/p0 region only for the specimens with RRRc8.