L. P. Gor'kov, G. B. Teitel'baum, “Pseudogap behavior of nuclear spin relaxation in high <nobr>$T_c$</nobr> superconductors in terms of phase separation”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2004, Volume 80, Issue 3,Pages <nobr>221

This article is cited in 14 papers

CONDENSED MATTER

Pseudogap behavior of nuclear spin relaxation in high $T_c$ superconductors in terms of phase separation

L. P. Gor'kov^ab, G. B. Teitel'baum^c

^a National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA
^b L. D. Landau Institute for Theoretical Physics, 142432 Chernogolovka, Russia
^c E. K. Zavoiskii Institute for Technical Physics RAS, 420029 Kazan, Russia

Abstract: We analyze anew experiments on the NMR in cuprates and find an important information on their phase separation and its stripe character hidden in the dependence of $1/^{63}T_{1}$ on degree of doping. In a broad class of materials $1/^{63}T_{1}$ is the sum of two terms: the temperature independent one attributed to “incommensurate” stripes that occur at external doping, and an “universal” temperature dependent term ascribed to moving metallic and antiferromagnetic sub-phases. We argue that the frustrated first order phase transition in a broad temperature interval bears a dynamical character.

PACS: 74.25.Ha, 74.72.-h, 76.60.-k

Received: 07.07.2004

Language: English