Evidence of a Precursor Superconducting Phase at Temperatures as High as 180 K in RBa2Cu3O7-delta (R=Y,Gd,Eu) Superconducting Crystals from Infrared Spectroscopy
| Authors | |
|---|---|
| Year of publication | 2011 |
| Type | Article in Periodical |
| Magazine / Source | Physical Review Letters |
| MU Faculty or unit | |
| Citation | DUBROKA, Adam, M. ROESSLE, K. W. KIM, V. K. MALIK, Dominik MUNZAR, D. N. BASOV, A. A. SCHAFGANS, S. J. MOON, C. T. LIN, D. HAUG, V. HINKOV, B. KEIMER, Th. WOLF, J. G. STOREY, J. L. TALLON and C. BERNHARD. Evidence of a Precursor Superconducting Phase at Temperatures as High as 180 K in RBa2Cu3O7-delta (R=Y,Gd,Eu) Superconducting Crystals from Infrared Spectroscopy. Physical Review Letters. USA: The Americal Physical Society, 2011, vol. 106, No 4, p. "047006-1"-"047006-4", 4 pp. ISSN 0031-9007. Available from: https://dx.doi.org/10.1103/PhysRevLett.106.047006. |
| web | http://prl.aps.org/abstract/PRL/v106/i4/e047006 |
| Doi | http://dx.doi.org/10.1103/PhysRevLett.106.047006 |
| Field | Solid matter physics and magnetism |
| Keywords | High-Tc superconductors; infrared response; precursor superconductivity above Tc |
| Description | We show that a miltilayer analysis of the infrared c-axis response of RBa2Cu3O7-delta (R=Y,Gd,Eu) provides important new information about the anomalous normal-state properties of underdoped curprate high temperature superconductors. In addition to competing correlations which give rise to a pseudogap that depletes the low-energy electronic states below T*>>Tc, it enables us to identify the onset of a precursor superconducting state below Tons>Tc. We map out the doping phase diagram of Tons which reaches a maximum of 180K at strong underdoping and present magnetic field dependent data which confirm our conclusions. |
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