High-Field Quasiparticle Tunneling inBi2Sr2CaCu2O8+δ: Negative Magnetoresistance in the Superconducting State

0, consistent with the scattering at the nodes of the d-wave gap. A superlinear sigma(q)(H) marks the normal state above T(c). -->

ISSN:	1079-7114 0031-9007
Přístupová URL adresa:	https://explore.openaire.eu/search/publication?articleId=doi_________::2270b6073d113add1c31061d23459328 https://doi.org/10.1103/physrevlett.84.1784
Rights:	OPEN
Přírůstkové číslo:	edsair.doi...........2270b6073d113add1c31061d23459328
Autor:	L. N. Bulaevskii, Lia Krusin-Elbaum, T. Shibauchi, M. P. Maley, N. Morozov, Tsutomu Yamashita, Yu. I. Latyshev
Rok vydání:	2000
Předmět:	Physics Superconductivity High-temperature superconductivity Condensed matter physics Magnetoresistance Scattering General Physics and Astronomy law.invention Electrical resistivity and conductivity law Condensed Matter::Superconductivity Quasiparticle Cooper pair Type-II superconductor
Zdroj:	Physical Review Letters. 84:1784-1787
ISSN:	1079-7114 0031-9007
Popis:	We report on the c-axis resistivity rho(c)(H) in Bi(2)Sr(2)CaCu(2)O(8+delta) that peaks in quasistatic magnetic fields up to 60 T. By suppressing the Josephson part of the two-channel (Cooper pair/quasiparticle) conductivity sigma(c)(H), we find that the negative slope of rho(c)(H) above the peak is due to quasiparticle tunneling conductivity sigma(q)(H) across the CuO2 layers below H(c2). At high fields (a) sigma(q)(H) grows linearly with H, and (b) rho(c)(T) tends to saturate ( sigma(c) not equal0) as T-->0, consistent with the scattering at the nodes of the d-wave gap. A superlinear sigma(q)(H) marks the normal state above T(c).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2270b6073d113add1c31061d23459328 https://doi.org/10.1103/physrevlett.84.1784 Zobrazit plný text záznamu