Journal
PHYSICAL REVIEW B
Volume 64, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.64.140505
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We study the sensitivity of T-c and the pseudogap onset temperature, T*, to low fields, H, using a BCS-based approach extended to arbitrary coupling. We find that T* and T-c which are of the same superconducting origin, have very different H dependences. This is due to the pseudogap, Delta (pg), which is present at the latter, but not former temperature. Our results for the coherence length xi fit well with existing experiments. We predict that very near the insulator xi will rapidly increase.
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