ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract La-NMR, Hall coefficient and sound velocity have been measured in order to investigate the correlation between the magnetic ordering, the prominent change of transport properties, the suppression of T c and the structural transformation around x∼1/8 in La 1.96−x Y 0.04 Sr x CuO 4. By the substitution of 0.04/2 Y for La-sites, the structural transformation to the low temperature tetragonal phase (LTT) is caused at 57±14 K for samples around x∼0.115. The. prominent decrease of the Hall coefficient followed by the sign reversal and the magnetic ordering are observed around x∼0.115 below temperatures T s and T N, respectively. T s vs x shows a bell shaped curve with the maximum value of 65 K at x∼00115 where most prominent suppression of T c appears. T N shows similar x dependence to T s with the maximum value of 40 K at x∼0.115. The change of the electronic state below T s and the suppression of T c become more prominent and the magnetic ordering is observed more wide range of x under the LTT phase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022562909996
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