Yeh, N.-C. and Beyer, A. D. (2009) Unconventional low-energy excitations of cuprate superconductors. International Journal of Modern Physics B, 23 (22). pp. 4543-4577. ISSN 0217-9792 http://resolver.caltech.edu/CaltechAUTHORS:20100414-093810959
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Recent development in the physics of high-temperature cuprate superconductivity is reviewed, with special emphasis on the phenomena of unconventional and non-universal low-energy excitations of hole- and electron-type cuprate superconductors and the possible physical origin. A phenomenology based on coexisting competing orders with cuprate superconductivity in the ground state appears to provide a consistent account for a wide range of experimental findings, including the presence (absence) of pseudogaps and Fermi arcs above the superconducting transition T_c in hole-type (electron-type) cuprate superconductors and the novel conductance modulations below T_c, particularly in the vortex state. Moreover, the competing order scenario is compatible with the possibility of pre-formed Cooper pairs and significant phase fluctuations in cuprate superconductors. The physical implications of the unified phenomenology and remaining open issues for the microscopic mechanism of cuprate superconductivity are discussed.
|Additional Information:||© 2009 World Scientific Publishing. Received 18 August 2009. The work at Caltech is supported by the National Science Foundation through Grants #DMR-0405088.|
|Subject Keywords:||Cuprate superconductors; low-energy excitations; pseudogap; competing orders; quantum fluctuations|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||14 Apr 2010 17:06|
|Last Modified:||26 Dec 2012 11:58|
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