Effect of hole doping on the London penetration depth in Bi2.15 Sr1.85 CaCu2 O8+δ and Bi2.1 Sr1.9 Ca0.85 Y0.15 Cu2 O8+δ

• Main Authors: W. Anukool, S. Barakat, C. Panagopoulos, J. R. Cooper
• Format: Journal
• Published: 2018
• Subjects: Materials Science; Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=69649106108&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/59696
• Institution: Chiang Mai University

We report measurements of ac susceptibility and hence the in-plane London penetration depth on the same samples of Bi2.15 Sr1.85 CaCu2 O8+δ and Bi2.1 Sr1.9 Ca0.85 Y0.15 Cu2 O8+δ for many values of the hole concentration (p). These support the scenario in which the pseudogap weakens the superconducti...