Articles written in Pramana – Journal of Physics
Volume 19 Issue 1 July 1982 pp 107-115 Solid State Physics
This paper describes and analyses a self-consistent cluster coherent potential approximation calculation of the electron density of states of a random, binary alloy on a
Volume 21 Issue 3 September 1983 pp 171-182 Solid State Physics
The Ising model with competing interactions is studied in a mean field effective medium approach. The phase diagram of such model alloys is studied. We conclude that for all ratios of the competing interaction moments, a spin glass phase always exists at low temperatures for certain concentration regimes.
Volume 22 Issue 2 February 1984 pp 107-110 Solid State Physics
The existence of a ‘hole’ in the local field distribution
Volume 24 Issue 4 April 1985 pp 563-574 Solid State Physics
The Heisenberg model with competing interactions is studied within a mean field, effective medium approach. The phase diagram indicates the existence of a mixed or randomly canted phase just beyond the spin glass regime. Experimental evidence of such a phase in alloys like FeCr is studied.
Volume 34 Issue 5 May 1990 pp 441-445
We propose a formalism for the study of mean resistance of a one dimensional chain of random potentials. We obtain the resistance as a function of the length of the chain. In the asymptotic limit, this is related to the wavefunction envelope. The formalism demands loss of translational symmetry, but is general enough to include potentials with spatial correlations which are not long ranged and also those whose randomness is inhomogeneous.
Volume 94, 2020
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