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Isobaric electrical resistance along the critical line in nickel: An experimental test of universality

Yousuf, M and Kumar, A (1989) Isobaric electrical resistance along the critical line in nickel: An experimental test of universality. In: Physical Review B: Condensed Matter, 39 (10). pp. 7288-7291.

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Official URL: http://prb.aps.org/abstract/PRB/v39/i10/p7288_1

Abstract

High-precision measurement of the electrical resistance of nickel along its critical line, a first attempt of this kind, as a function of pressure to 47.5 kbar is reported. Our analysis yields the values of the critical exponents α=α’=-0.115±0.005 and the amplitude ratios ‖A/A’‖=1.17±0.07 and ‖D/D’‖=1.2±0.1. These values are in close agreement with those predicted by renormalization-group (RG) theory. Moreover, this investigation provides an unambiguous experimental verification to one of the key consequences of RG theory that the critical exponents and amplitudes ratios are insensitive to pressure variation in nickel, a Heisenberg ferromagnet.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 25 Aug 2010 12:01
Last Modified: 19 Sep 2010 06:14
URI: http://eprints.iisc.ernet.in/id/eprint/31528

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