Physics – Condensed Matter – Superconductivity
Scientific paper
2004-08-16
Phys.Rev.B71:214511,2005
Physics
Condensed Matter
Superconductivity
43 pages, 14 figures. (v4): in earlier versions Fig. 1 did not process correctly; problem fixed. Additional references
Scientific paper
10.1103/PhysRevB.71.214511
We introduce and study an XY-type model of thermal and quantum phase fluctuations in a two-dimensional correlated lattice d-wave superconductor based on the QED3 effective theory of high temperature superconductors. General features of and selected results obtained within this model were reported earlier in an abbreviated format (Z. Tesanovic, cond-mat/0405235). The model is geared toward describing not only the long distance but also the intermediate lengthscale physics of underdoped cuprates. In particular, we elucidate the dynamical origin and investigate specific features of the Cooper pair charge-density-wave (CPCDW), which we argue is the state behind the periodic charge density modulation discovered in recent STM experiments. We illustrate how Mott-Hubbard correlations near half-filling suppress superfluid density and favor an incompressible state which breaks translational symmetry of the atomic lattice. We show how the formation of the CPCDW in such a strongly quantum fluctuating superconductor can be understood as an Abrikosov-Hofstadter problem in a type-II dual superconductor, with the role of the dual magnetic field played by the electron density. The resulting Abrikosov lattice of dual vortices translates into the periodic modulation of the Bogoliubov-deGennes gap function and the electronic density. We compute detailed signatures of various Abrikosov-Hofstadter dual vortex arrays in the single-particle local tunneling density of states. A 4x4 checkerboard-type modulation pattern naturally arises as an energetically favored ground state at and near the x = 1/8 doping and produces good agreement with experimental observations.
Melikyan Ashot
Tesanovic Zlatko
No associations
LandOfFree
A model of phase fluctuations in a lattice d-wave superconductor: application to the Cooper pair charge-density-wave in underdoped cuprates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A model of phase fluctuations in a lattice d-wave superconductor: application to the Cooper pair charge-density-wave in underdoped cuprates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A model of phase fluctuations in a lattice d-wave superconductor: application to the Cooper pair charge-density-wave in underdoped cuprates will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-579537