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20 April 2024

» arxiv » 0802.3240

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NMR study on the local structure in La-based high-Tc cuprates
T. Goto ; J. Tonishi ; T. Suzuki ; A. Oosawa ; M. Fujita ; K. Yamada ; T. Adachi ; Y. Koike ;
Date:	22 Feb 2008
Abstract:	To date, there has been no evidence for the macroscopic structural phase transition to the low temperature tetragonal structure (LTT) with a space group P42/ncm in high-TC cuprate of rare earth-free La2-xSrxCuO4 (LSCO). By investigating Cu-NMR on single crystals, we have found that spatially incoherent LTT structure emerges below 50 K in the sample with x=0.12. This incoherent structure is considered to play a key role for the slight depression of the superconductivity around x=1/8.
Source:	arXiv, 0802.3240
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