Enhancement of interaction constants in disordered systems: Experimental evidence

C. Castellani; C. DiCastro; H. Fukuyama; P. A. Lee; M. Ma

doi:10.1103/PhysRevB.33.7277

Enhancement of interaction constants in disordered systems: Experimental evidence

C. Castellani, C. DiCastro, H. Fukuyama, P. A. Lee, and M. Ma

Phys. Rev. B 33, 7277 – Published 15 May 1986

Abstract

A recent theory predicts the renormalization of the coupling constant with decreasing temperature in strongly disordered metals. We point out that there exists experimental evidence for this phenomenon in the form of an enhancement of the $T^{1 / 2}$ correction to the conductivity at low temperatures. We also stress that measurements of the spin susceptibility, the spin-diffusion constant, and the inelastic scattering rate in the same sample will provide further tests of the theory.

Received 19 December 1985

DOI:https://doi.org/10.1103/PhysRevB.33.7277

Authors & Affiliations

C. Castellani

Dipartimento di Fisica, Università degli Studi dell’Aquila, I-67100 l’Aquila, Italy and Departimento di Fisica, Università degli Studi di Roma ‘‘La Sapienza,’’ I-00185 Roma, Italy

C. DiCastro