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Tunneling studies on single crystals of superconducting Bi2Ca1−xYxSr2Cu2O8+δ
Authors:H Srikanth  AK Raychaudhuri  CR Venkateswara Rao  P Ramasamy  Hemantkumar N Aiyer  CNR Rao  
Institution:

Department of Physics, Indian Institute of Science, Bangalore - 560 012, India

Crystal Growth Centre, Anna University, Madras - 600 025, India

Solid State & Structural Chemistry Unit and Materials Research Centre, Indian Institute of Science, Bangalore - 560 012, India

Abstract:Tunneling studies have been carried out on single crystals of Bi2Ca1−xSrxCu2O8+δ over a wide range of compositions wherein the hole concentration varies by a factor of 2.5. The 2Δ value varies between 25 meV and 75 meV over the composition range studied, but scales with 2Δ/kBTc≈9.5 throughout.
Keywords:
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