Rotational Symmetry Breaking in the Ground State of Sodium-Doped Cuprate Superconductors
Yan Chen, T. M. Rice, F. C. Zhang
DOI 10.1103/PhysRevLett.97.237004 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We use an extended t−J model to study a single hole bound to a Na+ acceptor in Ca2−xNaxCuO2Cl2. For parameters suitable to cuprates, the ground state has a twofold degeneracy, corresponding to even (odd) reflection symmetry around the x (y) axes. The conductance pattern of the broken symmetry state is anisotropic as the tip of a tunneling microscope scans above the Cu−O−Cu bonds along the x (y) axes. This anisotropy is pronounced at lower voltages but reduced at higher voltages. Our theory agrees qualitatively with recent data of scanning tunneling microscopy showing broken local rotational symmetry.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ca2-xNaxCuO2Cl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Spin Excitations in Fluctuating Stripe Phases of Doped Cuprate Superconductors
similarity 0.97Matthias Vojta et al.
Source status unknown — claims are unverified
One-particle spectral function and local density of states in a phenomenological mixed-phase model for high-temperature superconductors
similarity 0.95Matthias Mayr et al.
Source status unknown — claims are unverified
Superconducting d-wave stripes in cuprates: Valence bond order coexisting with nodal quasiparticles
similarity 0.95Matthias Vojta & Oliver Rösch
Source status unknown — claims are unverified
High-energy dispersion anomaly induced by the charge modulation in high-Tc superconductors
similarity 0.95T. Zhou & Z. D. Wang
Source status unknown — claims are unverified
Universality of scanning tunneling microscopy in cuprate superconductors
similarity 0.95Peayush Choubey et al.
Source status unknown — claims are unverified
Discerning electronic fingerprints of nodal and antinodal nestings and their phase coherences in doped cuprate superconductors
similarity 0.94Tanmoy Das
Source status unknown — claims are unverified