Phase diagram of YBa$_2$Cu$_3$O$_{7-y}$ at T$<$T$_c$ based on Cu(2) transverse nuclear relaxation

M. V. Eremin; Yu. A. Sakhratov; A. V. Savinkov; A. V. Dooglav; I. R. Mukhamedshin; A. V. Egorov

doi:10.1134/1.1387523

paper

Phase diagram of YBa $_{2}$ Cu $_{3}$ O $_{7 - y}$ at T $<$ T $_{c}$ based on Cu(2) transverse nuclear relaxation

arXiv:cond-mat/0105508 · doi:10.1134/1.1387523

Abstract

Two maxima in transverse relaxation rate of Cu(2) nuclei in YBa $_{2}$ Cu $_{3}$ O $_{7 - y}$ are observed, at T = 35 K and T = 47 K. Comparison of the $^{63}$ Cu(2) and $^{65}$ Cu(2) rates at T = 47 K indicates the magnetic character of relaxation. The enhancement at T = 47 K of fluctuating local magnetic fields perpendicular to the CuO $_{2}$ planes is connected with the critical fluctuations of orbital currents. Maximum at T = 35 K is connected with the appearance of inhomogeneous supeconducting phase. Together with data published to date, our experimental results allow to suggest a qualitatively new phase diagram of the superconducting phase.

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Phase diagram of YBa2​Cu3​O7−y​ at T<Tc​ based on Cu(2) transverse nuclear relaxation

Abstract

Cited by in corpus (4)

Phase diagram of YBa $_{2}$ Cu $_{3}$ O $_{7 - y}$ at T $<$ T $_{c}$ based on Cu(2) transverse nuclear relaxation