Sum Rules and Interlayer Infrared Response of the High Temperature YBa2Cu3Oy Superconductor in an External Magnetic Field
A. D. LaForge, W. J. Padilla, K. S. Burch, Z. Q. Li, A. A. Schafgans, Kouji Segawa, Yoichi Ando, D. N. Basov
DOI 10.1103/PhysRevLett.101.097008 · Physical Review Letters
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Abstract
We present infrared magneto-optical measurements of the c-axis conductivity of YBa2Cu3Oy in both the underdoped (y=6.67 and 6.75) and optimally doped (y=6.95) regimes. We show that modest c-axis magnetic fields radically modify the condensate formation and restore conventional BCS-like energetics. Additionally, we demonstrate the pivotal role of interplane coherence in the anomalous high-energy contribution to the superfluid density.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 65 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
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