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Title:Variable Temperature Scanning Tunneling Microscopy Study of a High Temperature Superconductor BSCCO
Author(s):Vershinin, Michael
Doctoral Committee Chair(s):Yazdani, Ali
Department / Program:Physics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Physics, Condensed Matter
Abstract:The key results at 100 K are our observation of local electronic ordering below the pseudogap energy scale and our failure to observe any tell-tale signs of local superconductivity at Ni impurity sites in the pseudogap regime of a high-TC superconductor. The observation of electronic ordering in the pseudogap regime is a novel and indeed a highly unexpected result. The existence of such a phenomenon is likely to have substantial impact on our understanding of the pseudogap regime. Our tunneling spectroscopy observations at the Ni sites reveal a clear difference between the electronic states above and below TC. This is a novel result in its own right. It unambiguously shows that single electron spectroscopy can observe sharp differences between the various cuprate phases. This observation makes STM a valuable tool and holds the promise of using it to map out electronic states and phases across the entire phase diagram.
Issue Date:2004
Description:148 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004.
Other Identifier(s):(MiAaPQ)AAI3160962
Date Available in IDEALS:2015-09-25
Date Deposited:2004

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