EFFECTS OF TRANSPORT CURRENT AND COLUMNAR DEFECTS ON THE RF PENETRATION DEPTH OF NBSE2

Authors
CHUNG, MKUO, YKXU, ZGDELONG, LEBRILL, JWBUDHANI, RC
Issue Date
1994-07-01
Publisher
AMERICAN PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.50, no.2, pp.1329 - 1332
Abstract
We report on simultaneous measurements of the dc critical current and rf penetration depth of superconducting 2H-NbSe2. We observed that the large peak in the dc critical current (the ''peak effect'') occurs at the same applied magnetic field H(T) as a maximum in the rf penetration depth, indicating that the anomaly in flux-line dynamics is associated with a change in flux-line pinning strength. The anomalies in the critical current and rf penetration depth disappear in a sample with a high density of columnar defects produced by Ag-ion bombardment; both superconducting and charge-density-wave phase transitions are substantially broadened by the defects.
Keywords
VIBRATING SUPERCONDUCTORS; FLUX; CRYSTALS; LATTICE; 2H-NBSE2; LINE; IRREVERSIBILITY; IRRADIATION; YBA2CU3O7; 2H-TASE2; VIBRATING SUPERCONDUCTORS; FLUX; CRYSTALS; LATTICE; 2H-NBSE2; LINE; IRREVERSIBILITY; IRRADIATION; YBA2CU3O7; 2H-TASE2
ISSN
0163-1829
URI
https://pubs.kist.re.kr/handle/201004/145540
DOI
10.1103/PhysRevB.50.1329
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