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Aspects of the tunneling dip feature in Bi2Sr2CaCu2O8+δ and its relation to the resonance spin excitation

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Conference Paper (177.9Kb)
Date
2002-12
Author
Zasadzinski, John F.
Özyüzer, Lütfi
Miyakawa, Nobuaki
Gray, Kenneth E.
Hinks, David G.
Kendziora, Christopher A.
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Abstract
Break-junction tunneling data are reported in Bi2Sr2CaCu2O8+δ over a wide range of hole concentration from underdoped to overdoped. The strong conductance peaks in the superconducting state reveal a single gap consistent with d-wave symmetry. In addition, sharp dips are observed at a voltage, Ω/□, measured with respect to the gap edge. These features are shown to be reproduced in other junction types from the literature including atomically resolved STM and □-axis mesas, establishing their intrinsic character. Trends are observed with doping and temperature which link the dip to the resonance spin excitation and indicate that the quasiparticles are strongly coupled to this mode.
URI
http://doi.org/10.1016/S0022-3697(02)00246-9
http://hdl.handle.net/11147/4629
Collections
  • Physics / Fizik [414]
  • Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection [3276]
  • WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection [2953]


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