The nature of the superconducting state in PbTe doped with thallium

Journal Article · Fri Oct 01 00:00:00 EDT 1982 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:6229869

Chernik, I A; Lykov, S N; Grechko, N I

With the aim of explaining the nature of the superconductivity in PbTe(T1) an experimental investigation is carried out on the linear term in the specific heat, low-temperature Hall coefficient, and critical temperature in PbTe samples containing thallium impurities (0.5 and 1.15 at %) with varying values of the Fermi energy due to doping with additional acceptor impurities (sodium). Analysis of the data indicates that a principal role is played by Tl impurity states in the formation of superconductivity in PbTe(T1), that these states participate directly in the superconducting transition and that they have a definite contribution to the superconductivity,. Also it is found that there is a threshold in the value of the T1 impurity concentration for superconductivity. Possible mechanisms of superconductivity in PbTe(T1) are briefly discussed.

• Research Organization: M. I. Kalinin Polytechnical Institute, Leningrad
• OSTI ID: 6229869
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 24:10; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HALL EFFECT
LEAD COMPOUNDS
LEAD TELLURIDES
PHYSICAL PROPERTIES
SPECIFIC HEAT
SUPERCONDUCTIVITY
TELLURIDES
TELLURIUM COMPOUNDS
THALLIUM ADDITIONS
THALLIUM ALLOYS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE