Spin Orbit Effects and Superconductivity in Oxide Materials

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In a variety of materials superconductivity is associated with the existence of a quantum critical point (QCP). In the case of the hole doped cuprates there is evidence which suggests that the important quantum degrees of freedom near the superconducting critical point are localized charge and spin density fluctuations. We argue that if these degrees of freedom are strongly coupled by spin-orbit interactions, a new type of quantum criticality arises with monopole-like quasi-particles as the important quantum degrees of freedom,. In layered material this type of quantum criticality can be modeled using a 2-dimensional non-linear Schrodinger equation with an SU(N) ... continued below

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Chapline, G F September 29, 2005.

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In a variety of materials superconductivity is associated with the existence of a quantum critical point (QCP). In the case of the hole doped cuprates there is evidence which suggests that the important quantum degrees of freedom near the superconducting critical point are localized charge and spin density fluctuations. We argue that if these degrees of freedom are strongly coupled by spin-orbit interactions, a new type of quantum criticality arises with monopole-like quasi-particles as the important quantum degrees of freedom,. In layered material this type of quantum criticality can be modeled using a 2-dimensional non-linear Schrodinger equation with an SU(N) gauge field. We exhibit a pairing wave function for quasi-particles that has topological order and anisotropic properties. The superconducting transition would in some respects resemble a KT transition.

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PDF-file: 10 pages; size: 0.9 Mbytes

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  • Journal Name: Philosophical Magazine, vol. 86, no. 9, March 21, 2006, pp. 1201-1207

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  • Report No.: UCRL-JRNL-216356
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 891711
  • Archival Resource Key: ark:/67531/metadc873133

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  • September 29, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 7, 2016, 9:35 p.m.

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Chapline, G F. Spin Orbit Effects and Superconductivity in Oxide Materials, article, September 29, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc873133/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.