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Phys. Rev. Lett. 82, 4304–4307 (1999)

Incoherent Pair Tunneling as a Probe of the Cuprate Pseudogap

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Boldizsár Jankó, Ioan Kosztin, and K. Levin
The James Franck Institute, The University of Chicago, 5640 S. Ellis Avenue, Chicago, Illinois 60637

M. R. Norman
Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439

Douglas J. Scalapino
Department of Physics, University of California, Santa Barbara, California 93106

Received 19 August 1998; published in the issue dated 24 May 1999

We argue that incoherent pair tunneling in a cuprate superconductor junction with an optimally doped superconducting and an underdoped normal lead can be used to detect the presence of pairing correlations in the pseudogap phase of the underdoped lead. We estimate that the junction characteristics most suitable for studying the pair tunneling current are close to recently manufactured cuprate tunneling devices.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.4304
DOI:
10.1103/PhysRevLett.82.4304
PACS:
74.50.+r, 74.20.Mn, 74.40.+k, 74.72.-h