Role of pair-breaking and phase fluctuations in c-axis tunneling in underdoped Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$

C.J. van der Beek; M. Gaifullin; P. Gierlowski; P.H. Kes; P. Spathis; S. Colson; Yuji Matsuda

arxiv: cond-mat/0607671 · v1 · pith:EXGWYPTGnew · submitted 2006-07-26 · ❄️ cond-mat.supr-con · cond-mat.str-el

Role of pair-breaking and phase fluctuations in c-axis tunneling in underdoped Bi₂Sr₂CaCu₂O_(8+δ)

C.J. van der Beek , P. Spathis , S. Colson , P. Gierlowski , M. Gaifullin , Yuji Matsuda , P.H. Kes This is my paper

classification ❄️ cond-mat.supr-con cond-mat.str-el

keywords plasmac-axiscacudeltadisorderfluctuationsfrequencyirradiation

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The Josephson Plasma Resonance is used to study the c-axis supercurrent in the superconducting state of underdoped Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$ with varying degrees of controlled point-like disorder, introduced by high-energy electron irradiation. As disorder is increased, the Josephson Plasma frequency decreases proportionally to the critical temperature. The temperature dependence of the plasma frequency does not depend on the irradiation dose, and is in quantitative agreement with a model for quantum fluctuations of the superconducting phase in the CuO$_{2}$ layers.

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Role of pair-breaking and phase fluctuations in c-axis tunneling in underdoped Bi₂Sr₂CaCu₂O_(8+δ)

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