''phonon'' mechanism of the effect of sound on the superconducting energy gap

Journal Article · Tue Nov 30 23:00:00 EST 1976 · Sov. J. Low Temp. Phys. (Engl. Transl.); (United States)

OSTI ID:7310047

Bar'yakhtar, V G; Seminozhenko, V P

Nonequilibrium effects of the phonon system of a supercondutor, caused by high-frequency sound irradiation, on the energy gap ..delta.. (epsilon-;T) are considered. It is shown that for low temperatures (Tvery-much-less-thanT/sub c/) and pumping frequencies (omega-dieresis'<2..delta..) the effect of energy redistribution of electronic excitations (the Eliashberg mechanism) can be neglected. For sufficiently high supplied power (approximately 1 W/cm/sup 2/) the nonequilibrium gap can exceed appreciably the zero-temperature equilibrium value ..delta.. (epsilon,0); for Al the relative excess can consist of 25%.

• Research Organization: Donets Physicotechnical Institute, Academy of Sciences of the Ukrainian SSR
• OSTI ID: 7310047
• Journal Information: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States) Vol. 2:12; ISSN SJLPD
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
&amp; Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
ELECTRON-PHONON COUPLING
ELEMENTS
ENERGY GAP
METALS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
SOUND WAVES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE