Phase diagrams of electronic and superconducting transitions to soliton lattice states

Journal Article · Mon Aug 01 04:00:00 EDT 1983 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:6734622

Buzdin, A I; Tugushev, V V

The T/sub c/(..mu..) and T/sub c/(n) phase diagram is constructed for a number of anisotropic systems that undergo electronic or superconducting transitions to an incommensurate structure of the soliton-lattice type (T/sub c/ is the critical temperature of the transition, ..mu.. is the chemical potential, and n is the number of particles). It is shown that at all temperatures the solution obtained by Brazovskii et al. (JETP Lett. 31, 456 (1980)) and by Horvitz (Phys. Rev. Lett. 46, 742 (1981)) at T = 0 in the one-dimensional Peierls model is exact also in a number of two- and three-dimensional models. The transition between a commensurate phase and a soliton-lattice phase is considered. This is a first-order transition at fixed ..mu.. and of second order at fixed n. The line of this transition and the superheating and supercooling lines are obtained. The results are used to analyze the experimental data, which points to formation of soliton lattices in antiferromagnetic chromium and in quasi-one-dimensional systems with spin-Peierls transition. The realizability is considered of soliton structures in quasi-one-dimensional superconductors of the (TMTSF)/sub 2/X type, where the exchange field plays the role of the chemical potential.

• Research Organization: Moscow State University
• OSTI ID: 6734622
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 58:2; ISSN SPHJA
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CHROMIUM
DIAGRAMS
ELEMENTS
METALS
ONE-DIMENSIONAL CALCULATIONS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
QUASI PARTICLES
SOLITONS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE