Electromagnetic properties of proximity systems

Journal Article · Mon Jul 01 04:00:00 EDT 1985 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.32.145· OSTI ID:5666017

Kresin, V Z

Magnetic screening in the proximity system S/sub ..cap alpha../-M/sub ..beta../, where M/sub ..beta../ is a normal metal N, semiconductor (semimetal), or a superconductor, is studied. Main attention is paid to the low-temperature region where nonlocality plays an important role. The thermodynamic Green's-function method is employed in order to describe the behavior of the proximity system in an external field. The temperature and thickness dependences of the penetration depth lambda are obtained. The dependence lambda(T) differs in a striking way from the dependence in usual superconductors. The strong-coupling effect is taken into account. A special case of screening in a superconducting film backed by a size-quantizing semimetal film is considered. The results obtained are in good agreement with experimental data.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• OSTI ID: 5666017
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 32:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRODYNAMICS
ELEMENTS
FILMS
FUNCTIONS
GREEN FUNCTION
LOW TEMPERATURE
MATERIALS
METALS
PENETRATION DEPTH
PROXIMITY EFFECT
SCREENING
SEMICONDUCTOR MATERIALS
SUPERCONDUCTORS
TEMPERATURE EFFECTS
THIN FILMS