Energy gap and upper critical field of the new magnetic superconductor Mo3Sb7 found by the Andreev reflection method
- 1. B Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 61103 Kharkiv (Ukraine)
- 2. W Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 1410, 50-950 Wroclaw 2 (Poland)
Description
We present the data of the point contact (PC) Andreev-reflection measurements on the new paramagnetic superconductor Mo3Sb7, which were used for finding the energy gap Δ and upper critical field Hc2 for this compound. The maximum gap value, reduced to the zero temperature via the Bardeen-Cooper-Schrieffer (BCS) theory, turned out to be Δ (0) ≅ 0.32 meV, which is slightly smaller than that expected from the BCS theory, ΔBCS (0) ≅ 0.35 meV. The temperature dependence of the gap obeys the BCS theory approximately. The Hc2(0) value of about 16.5 kOe was obtained from fitting the experimental data to the conventional H(T) dependence, which is quadratic in temperature. This value is in close agreement with the result from magnetization measurements of 17.2 kOe
Availability note (English)
Available online at http://stacks.iop.org/0953-2048/19/573/sust6_6_026.pdf or at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-2048/19/573/sust6_6_026.pdf;
- DOI
- 10.1088/0953-2048/19/6/026;
- PII
- S0953-2048(06)19011-9;
Publishing Information
- Journal Title
- Superconductor Science and Technology
- Journal Volume
- 19
- Journal Issue
- 6
- Journal Page Range
- p. 573-576
- ISSN
- 0953-2048
- CODEN
- SUSTEF
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37085036
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BCS THEORY; CRITICAL FIELD; ELECTRIC CONTACTS; ENERGY GAP; MAGNETIZATION; PARAMAGNETISM; REFLECTION; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ELECTRICAL EQUIPMENT; EQUIPMENT; MAGNETIC FIELDS; MAGNETISM