Observation of an extended magnetic field penetration in amorphous superconducting MoGe films
Taichiro Nishio, Satoru Okayasu, Jun-ichi Suzuki, Nobuhito Kokubo, Kazuo Kadowaki
DOI 10.1103/PhysRevB.77.052503 · Physical Review B
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Abstract
We have observed the magnetic field distribution of a vortex generated in amorphous (α)−MoGe thin films with various thicknesses (d) (<λ, where λ is the penetration depth) with a scanning superconducting quantum interference device microscope. From the analyses of the field distribution as functions of film thickness and temperature, it is found that an effective in-plane penetration depth (Λ) extends with decreasing d, in accordance with the Pearl prediction Λ=2λ2∕d. Temperature dependence of Λ is also consistent with the two-fluid model involving the Pearl prediction.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| MoGe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.7 | Pressure not reported | unknown |
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