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Evidence of a Precursor Superconducting Phase at Temperatures as High as 180 K in RBa2Cu3O7-delta (R = Y, Gd, Eu) Superconducting Crystals from Infrared Spectroscopyopen access
- Authors
- Dubroka, Adam; Roessle, Matthias; Kim, Kyung Wan; Malik, Vivek K.; Munzar, Dominik; Basov, Dimitri N.; Schafgans, Alexander A.; Moon, Soonjae; Lin, Chengtian; Haug, D.; Hinkov, Vladimir; Keimer, Bernhard; Wolf, Thomas A.; Storey, James G.; Tallon, Jeffery L.; Bernhard, Christian
- Issue Date
- Jan-2011
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.106, no.4, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 106
- Number
- 4
- Start Page
- 1
- End Page
- 4
- ISSN
- 0031-9007
- Abstract
- We show that a multilayer 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 cuprate high temperature superconductors. In addition to competing correlations which give rise to a pseudogap that depletes the low-energy electronic states below T* >> T-c, it enables us to identify the onset of a precursor superconducting state below T-ons > T-c. We map out the doping phase diagram of T-ons which reaches a maximum of 180 K at strong underdoping and present magnetic field dependent data which confirm our conclusions.
- Appears in
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Related Researcher
- Moon, Soon jae
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)