Abstract:
Two peaks are observed at T=35T=35 and 47 K in the transverse relaxation rate for Cu(2) nuclei in YBa22Cu33O7−y7−y. A comparison of the relaxation rates for isotopes 6363Cu(2) and 6565Cu(2) at T=47T=47 K indicates the magnetic nature of relaxation. The enhancement of local magnetic field fluctuations perpendicular to CuO22 planes at T=47T=47 K is associated with critical fluctuations of orbital currents. The peak at T=35T=35 K is attributed to the emergence of an inhomogeneous superconducting phase. The obtained experimental results and the available data from the literature made it possible to propose a qualitatively new phase diagram of the superconducting state.
Citation:
M. V. Eremin, Yu. A. Sakhratov, A. V. Savinkov, A. V. Dooglav, I. R. Mukhamedshin, A. V. Egorov, “Phase diagram of YBa22Cu33O7−y7−y at T<TcT<Tc according to transverse nuclear relaxation data for Cu(2)”, Pis'ma v Zh. Èksper. Teoret. Fiz., 73:10 (2001), 609–612; JETP Letters, 73:10 (2001), 540–543
\Bibitem{EreSakSav01}
\by M.~V.~Eremin, Yu.~A.~Sakhratov, A.~V.~Savinkov, A.~V.~Dooglav, I.~R.~Mukhamedshin, A.~V.~Egorov
\paper Phase diagram of YBa$_2$Cu$_3$O$_{7-y}$ at $T<T_c$ according to transverse nuclear relaxation data for Cu(2)
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2001
\vol 73
\issue 10
\pages 609--612
\mathnet{http://mi.mathnet.ru/jetpl4402}
\transl
\jour JETP Letters
\yr 2001
\vol 73
\issue 10
\pages 540--543
\crossref{https://doi.org/10.1134/1.1387523}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-0011756741}
Linking options:
https://www.mathnet.ru/eng/jetpl4402
https://www.mathnet.ru/eng/jetpl/v73/i10/p609
This publication is cited in the following 5 articles:
H. Breitzke, I. Eremin, D. Manske, E.V. Antipov, K. Lüders, Physica C: Superconductivity, 406:1-2 (2004), 27
J. E. Sonier, J. H. Brewer, R. F. Kiefl, R. H. Heffner, K. F. Poon, S. L. Stubbs, G. D. Morris, R. I. Miller, W. N. Hardy, R. Liang, D. A. Bonn, J. S. Gardner, C. E. Stronach, N. J. Curro, Phys. Rev. B, 66:13 (2002)
C. P. Moca, Phys. Rev. B, 66:13 (2002)
M. V. Eremin, I. Eremin, A. Terzi, Phys. Rev. B, 66:10 (2002)