Experimental magnetization evidence for two superconducting phases in Bi bicrystals with large crystallite disorientation angles
F. M. Muntyanu, A. Gilewski, K. Nenkov, J. Warchulska, A. J. Zaleski
DOI 10.1103/PhysRevB.73.132507 · Physical Review B
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Abstract
Magnetization measurements prove that the magnetic properties of large-angle (θ>30°) bismuth bicrystals with a crystallite interface (CI) of twisting types essentially differ from well-known results on single-crystalline specimens. Two superconducting phases with Tc∼8.4K and ∼4.3K were observed at the CI of bicrystals while ordinary rhombohedral Bi is not a superconductor. We conclude that these phases have to do with the central part and the adjacent layers of the CI of bicrystals.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.4 | Pressure not reported | onset |
| Bi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.3 | Pressure not reported | onset |
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