Bulk superconductivity of doped lead telluride at 1. 4 /sup 0/K

Journal Article · Fri May 01 04:00:00 EDT 1981 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:6010272

Chernik, I; Lykov, S

Several samples of Tl-doped PbTe exhibited type II superconductivity with critical temperatures T/sub c/>1 /sup 0/K. The maximum value of T/sub c/ for these samples was 1.4 /sup 0/K. Estimates of the main parameters of the superconducting state of PbTe:Tl at T = 1 /sup 0/K gave H/sub c/1roughly-equal0.6 Oe, H/sub c/2roughly-equal2.5 kOe, and kappa-curroughly-equal80 (Ginzburg--Landau parameter). Preliminary estimates yielded H/sub c/2(0)roughly-equal5 kOe and 2..delta..(0)roughly-equal4 x 10/sup -4/ eV (BCS theory). The value of the coupling parameter N(0)V was close to 0.2 eV. The constant of the effective electron--electron interaction was found to be Vroughly-equal8 x 10/sup -23/ eV x cm/sup 3/. The probable reason for the high values of T/sub c/ of PbTe:Tl was the low conductivity (hole mobility) of this material.

• Research Organization: M. I. Kalinin Polytechnic Institute, Leningrad
• OSTI ID: 6010272
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 23:5; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CARRIER MOBILITY
CHALCOGENIDES
COUPLING CONSTANTS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
IMPURITIES
LEAD COMPOUNDS
LEAD TELLURIDES
METALS
MOBILITY
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
TELLURIDES
TELLURIUM COMPOUNDS
THALLIUM
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE