Unidirectional Charge Instability of the d-Wave Resonating Valence Bond Superconductor

• Authors: M. Raczkowski , M. Capello , D. Poilblanc
• Languages of publication: EN

Abstracts

EN

Starting from a uniform d-wave superconducting phase we study the energy cost due to imposed unidirectional defects with a vanishing pairing amplitude. Both renormalized mean-field theory and variational Monte Carlo calculations within the t-J model yield that the energies of inhomogeneous and uniform phases are very close to each other. This suggests that small perturbations in the microscopic Hamiltonian might lead to inhomogeneous superconducting phases in real materials as observed in recent scanning tunneling microscopy on Ca_{2-x}Na_xCuO_2Cl_2.

Keywords

EN

74.72.-h; 74.20.Mn; 74.81.-g; 75.40.Mg

Discipline

• 74.81.-g: Inhomogeneous superconductors and superconducting systems, including electronic inhomogeneities
• 74.72.-h: Cuprate superconductors
• 75.40.Mg: Numerical simulation studies
• 74.20.Mn: Nonconventional mechanisms

• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 77-79

Dates

published

2009-01

Contributors

author

M. Raczkowski

• Marian Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, PL-30-059 Kraków, Poland

author

M. Capello

• Laboratoire de Physique Théorique UMR5152, CNRS, F-31062 Toulouse, France

author

D. Poilblanc

• Laboratoire de Physique Théorique UMR5152, CNRS, F-31062 Toulouse, France

References

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Identifiers

DOI

10.12693/APhysPolA.115.77