Negative Magnetoresistance in Homogeneous Amorphous Superconducting Pb Wires
Journal Article
·
· Physical Review Letters
- Department of Physics, University of California, San Diego, La Jolla, California 92093 (United States)
We report systematic magnetotransport measurements on a series of {ital in situ} grown homogeneous amorphous Pb wires. Corresponding to the broadening of the superconducting transitions as the wires cross over from 2D to 1D, we observe a {ital negative} magnetoresistance (MR) below the mean-field T{sub c} at low fields. Both the magnitude of the negative MR and the crossover field increase with decreasing T{sub c} and wire cross-sectional area. We speculate that these observations are the result of superfluid density fluctuations in sign as well as in magnitude along these wires close to the superconductor-insulator transition. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 450446
- Journal Information:
- Physical Review Letters, Vol. 78, Issue 5; Other Information: PBD: Feb 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aharonov-Bohm oscillations with period hc /4 e and negative magnetoresistance in dirty superconductors
Influence of Microwave Excitation‐Power on the Narrow Negative Magnetoresistance Effect Around B = 0 T in the Ultra‐High Mobility GaAs/AlGaAs 2DES
Magnetoresistance of Ce{sub 3}Cu{sub 3}Sb{sub 4}: Ferromagnetic semiconductor (abstract)
Journal Article
·
Fri May 01 00:00:00 EDT 1992
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:450446
Influence of Microwave Excitation‐Power on the Narrow Negative Magnetoresistance Effect Around B = 0 T in the Ultra‐High Mobility GaAs/AlGaAs 2DES
Journal Article
·
Mon Feb 25 00:00:00 EST 2019
· Physica Status Solidi B. Basic Solid State Physics
·
OSTI ID:450446
+5 more
Magnetoresistance of Ce{sub 3}Cu{sub 3}Sb{sub 4}: Ferromagnetic semiconductor (abstract)
Journal Article
·
Tue Apr 01 00:00:00 EST 1997
· Journal of Applied Physics
·
OSTI ID:450446