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
- Title
- 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
- Author
- 문순재
- Keywords
- T-C SUPERCONDUCTORS; UNDERDOPED BI2SR2CACU2O8+DELTA; CUPRATE SUPERCONDUCTORS; SINGLE-CRYSTALS; OPTICAL PHONONS; ENERGY GAPS; AXIS; PSEUDOGAP; YBA2CU3O7-DELTA; CONDUCTIVITY
- Issue Date
- 2011-01
- Publisher
- AMERICAN PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v. 106, NO 4, Page. 1-4
- 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.
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.106.047006
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.106.047006
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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