Weak phase stiffness and mass divergence of superfluid in underdoped cuprates

  title={Weak phase stiffness and mass divergence of superfluid in underdoped cuprates},
  author={Yucel Yildirim and Wei Ku},
Despite more than two decades of intensive investigations, the true nature of high temperature (high-Tc) superconductivity observed in the cuprates remains elusive to the researchers. In particular, in the so-called ‘underdoped’ region, the overall behavior of superconductivity deviates qualitatively from the standard theoretical description pioneered by Bardeen, Cooper and Schrieffer (BCS). Recently, the importance of phase fluctuation of the superconducting order parameter has gained… Expand
1 Citations

Figures from this paper

Geometric frustration produces long-sought Bose metal phase of quantum matter
  • Anthony Hegg, Jinning Hou, W. Ku
  • Physics, Medicine
  • Proceedings of the National Academy of Sciences
  • 2021
A universal homogeneous theory for a Bose metal in which geometric frustration confines the essential quantum coherence to a lower dimension produces a gapless insulator characterized by dissipative flow that vanishes in the low-energy limit. Expand


An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates
Removing electrons from the CuO2 plane of cuprates alters the electronic correlations sufficiently to produce high-temperature superconductivity. Associated with these changes are spectral-weightExpand
Ordering, metastability and phase transitions in two-dimensional systems
A new definition of order called topological order is proposed for two-dimensional systems in which no long-range order of the conventional type exists. The possibility of a phase transitionExpand
The critical properties of the two-dimensional xy model
The critical properties of the xy model with nearest-neighbour interactions on a two-dimensional square lattice are studied by a renormalization group technique. The mean magnetization is zero forExpand
Influence of the third dimension of quasi-two-dimensional cuprate superconductors on angle-resolved photoemission spectra
Angle-resolved photoemission spectroscopy (ARPES) presents significant simplifications in analyzing strictly two-dimensional (2D) materials, but even the most anisotropic physical systems displayExpand
In situ Ag/YBa2Cu3O7 contacts for superconductor-normal-metal-superconductor devices.
By use of a completely in situ process, we have investigated Ag metal contacts to thin films of YBa 2 Cu 3 O 7 (YBCO), in order to study the properties of the Ag/YBCO interface as well as theExpand
c-axis Conductivity in the Normal State of Cuprate Superconductors
The $c$-axis optical conductivity and dc resistivity are calculated within the $t$- $J$ model assuming that the interlayer hopping is incoherent. Use is made of numerical results for spectralExpand
Cu-O network dependence of optical charge-transfer gaps and spin-pair excitations in single-CuO2-layer compounds.
Spectra of optical conductivity and magnon Raman scattering have been investigated in single crystals of a parent family of cuprate superconductors with various types of Cu-O single-layer networks.Expand
Kivelson Theory of the striped superconductor
  • Phys . Rev . B
  • 1996
Critical Currents in [ 001 ] Grains and across Their Tilt Boundaries in YBa 2 Cu 3 O 7 Films Pyhs
  • Phys . Rev . B
  • 1992