Critical field enhancement near a superconductor-insulator transition
We have discovered a phenomenon where the orbital pair breaking effect is reduced, if not eliminated. It appears as a striking enhancement in the upper critical field H(c2) for (TMTSF)2PF6 and a strong upward curvature in the critical field versus temperature in the region of pressure-temperature ph...
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Veröffentlicht in: | Physical review letters 2002-05, Vol.88 (20), p.207002-207002, Article 207002 |
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container_title | Physical review letters |
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creator | Lee, I J Chaikin, P M Naughton, M J |
description | We have discovered a phenomenon where the orbital pair breaking effect is reduced, if not eliminated. It appears as a striking enhancement in the upper critical field H(c2) for (TMTSF)2PF6 and a strong upward curvature in the critical field versus temperature in the region of pressure-temperature phase space near the superconductor-spin density wave insulator boundary. A simple model based on self-consistently dividing the superconductor into layers explains the observations remarkably well and provides a unique way around orbital frustration and toward higher critical fields. |
doi_str_mv | 10.1103/physrevlett.88.207002 |
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title | Critical field enhancement near a superconductor-insulator transition |
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