Pseudogap regime in high- Tc cuprates as a manifestation of a frustrated phase separation (NMR view)
Abstract
We show that the pseudogap behavior of the nuclear spin relaxation for cuprates may be considered as the dynamical phase separation to the “metallic” and “antiferromagnetic (AF)” regions. It stems from the 1st order phase transition that starts at T*(x) well above T but becomes frustrated because of broken electroneutrality in the CuO 2 plane. In this temperature range for a broad class of cuprates 1/ 63T1 is due to two independent mechanisms: relaxation on the “stripe”-like excitations and that driven by the moving AF regions. For LSCO, our estimations are in quantitative agreement with the neutron scattering data.
- Publication:
-
Physica B Condensed Matter
- Pub Date:
- April 2005
- DOI:
- 10.1016/j.physb.2005.01.130
- Bibcode:
- 2005PhyB..359..509G