Superconductive tunneling in vanadium with gaseous impurities
Journal Article
·
· Phys. Rev., B, v. 12, no. 11, pp. 4882-4885
Electron-tunneling measurements have been made in vanadium films containing varying amounts of gaseous impurities. Transition temperatures T/subc/ vary from near the bulk value to more than 2 K below it. After corrections are made for spurious leakage conductivity, tunneling characteristics are in all cases consistent with a simple BCS superconducting density of states. T/subc/ and the zero-temperature energy gap epsilon (0) vary in accordance with 2epsilon (0)/kT/subc/ = 3.5 plus-or-minus 0.1. In consequence, it does not appear that gaseous impurities enter the vanadium lattice in a paramagnetic configuration. (AIP)
- Research Organization:
- Department of Physics and Astronomy, Carleton College, Northfield, Minnesota 55057
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-33-017771
- OSTI ID:
- 4112759
- Journal Information:
- Phys. Rev., B, v. 12, no. 11, pp. 4882-4885, Journal Name: Phys. Rev., B, v. 12, no. 11, pp. 4882-4885; ISSN PLRBA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
*VANADIUM-- TUNNEL EFFECT
360104* --Materials--Metals & Alloys--Physical Properties
ENERGY GAP
FILMS
IMPURITIES
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
N66200 --Physics (Low Temperature)--Superconductivity
SUPERCONDUCTIVITY
TRANSITION TEMPERATURE
360104* --Materials--Metals & Alloys--Physical Properties
ENERGY GAP
FILMS
IMPURITIES
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
N66200 --Physics (Low Temperature)--Superconductivity
SUPERCONDUCTIVITY
TRANSITION TEMPERATURE