Electronic Raman scattering in superconductors on triangular lattices

2005/09/05 by Jianbo Wang, Jian-Bo Wang, Xiang-Mei He +2
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Condensed matter physics #Cooper pair #Impurity #Magnetic and transport properties of perovskites and related materials #Pairing #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Raman scattering #Raman spectroscopy #Scattering #Singlet state #Superconductivity #X-ray Raman scattering #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.73.092510

6 pages, 5 eps figures

arxiv created 2005/09/05 · openalex publication_date 2006/03/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We discuss the electronic Raman scattering in superconductors on triangle lattices, with possible application to the cobalt oxide superconductors. In the case of s-wave pairing the absorption is forbidden below the pair-breaking peak (PBP) in the clean system as well as in the presence of impurity scattering; in the cases of p_x+ip_y- and d_x²\ensuremath-y²+id_xy-wave pairing the absorption below the PBP is forbidden in the clean system, but can be induced by impurities. Finally in the case of nodal f-wave pairing the general line shapes in the A_1g and E_g channels are different, and there exists a strict universal linear E_g Raman response in the low energy limit for weak scattering rates. These features, combined with another probe of singlet versus triplet pairing, can be used to identify the relevant pairing symmetries unambiguously.

Citations

• Possible Spin-Tripletf-Wave Pairing Due to Disconnected Fermi Surfaces In NaxCoO2·yH2O
• Electronic Model forCoO2Layer Based Systems: Chiral Resonating Valence Bond Metal and Superconductivity
• Electronic Raman scattering inYBa2Cu3O7sand other superconducting cuprates
• Superconductivity in a layered cobalt oxyhydrate Na0.31CoO2 1.3H2O
• Impurity and interface bound states in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>d</mml:mi></mml:mrow><mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>x</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>−</mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mi>y</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mo>+</mml:mo><mml:mi>i</mml:mi><mml:mi>d</mml:mi></mml:mrow><mml:mrow><mml:mi>xy</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mo>+</mml:mo><mml:mi>i</mml:mi><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>superconductors
• Superconductivity inCoO2layers and the resonating valence bond mean-field theory of the triangular latticet−Jmodel
• Unconventional Superconductivity and Electron Correlations in the Cobalt OxyhydrateNa0.35CoO2·yH2Ofrom Nuclear Quadrupole Resonance
• Dopedt−Jmodel on a triangular lattice: Possible application toNaxCoO2⋅yH2OandNa1−xTiO2