Ti-47/49 and La-139 NMR studies on Mott transition in La1-xSrxTiO3

被引：1
|
作者：
Furukawa, Y
Okamura, I
Kumagai, K
Goto, T
Fukase, T
Taguchi, Y
Tokura, Y
机构：
[1] TOHOKU UNIV, INST MAT RES, SENDAI, MIYAGI 98077, JAPAN
[2] UNIV TOKYO, DEPT APPL PHYS, TOKYO 113, JAPAN
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1997年 / 282卷
关键词：
D O I：
10.1016/S0921-4534(97)00657-6
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Carrier doping effects on electronic correlations in La1-xSrxTiO3 have been investigated by Ti-47/49 and La-139 NMR The increases of nuclear spin-lattice relaxation rates, (T1T)(-1), of both La and Ti provide the critical enhancements of effective carrier mass on approaching the Mott transition phase boundary from the metallic side. We have no evidences for a prominent increase of antiferromagnetic spin fluctuations at q similar to Q near the Mott-transition boundary, which is sharply contrast to the case of high-T-c cuprates.
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页码：1103 / 1104
页数：2
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