TY - JOUR
T1 - Pseudogap and superconducting fluctuations in Bi2Sr2CaCu2O8+y probed by 63Cu NMR
AU - Tokunaga, Y.
AU - Ishida, K.
AU - Yoshida, K.
AU - Mito, T.
AU - Kitaoka, Y.
AU - Nakayama, Y.
AU - Shimoyama, J.
AU - Kishio, K.
AU - Narikiyo, O.
AU - Miyake, K.
N1 - Funding Information:
This work was supported by the COE Research (10CE2004). One of the authors (Y.T.) have been supported by JSPS Research Fellowships for Young Scientists.
PY - 2000
Y1 - 2000
N2 - We report temperature dependence of the Gaussian component of spin-echo decay rate (1/T2G) in single crystals Bi2Sr2CaCu2O8+y(Bi2212). We found that 1/T2G starts to decrease at a certain temperature, Tc*, which is higher than Tc and lower than the pseudogap temperature, T*, suggesting the formation of local Cooper pairing without global phase coherency. Based on our NMR results, we develop the phase diagram in the Bi2212 system which includes three crossover temperatures, TmK, T* and Tc*.
AB - We report temperature dependence of the Gaussian component of spin-echo decay rate (1/T2G) in single crystals Bi2Sr2CaCu2O8+y(Bi2212). We found that 1/T2G starts to decrease at a certain temperature, Tc*, which is higher than Tc and lower than the pseudogap temperature, T*, suggesting the formation of local Cooper pairing without global phase coherency. Based on our NMR results, we develop the phase diagram in the Bi2212 system which includes three crossover temperatures, TmK, T* and Tc*.
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U2 - 10.1016/S0921-4526(99)02328-5
DO - 10.1016/S0921-4526(99)02328-5
M3 - Article
AN - SCOPUS:0033688428
SN - 0921-4526
VL - 284-288
SP - 663
EP - 664
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - PART I
ER -