Hole-doping effect on spin gaps in Sr(14-x)A(x)Cu(24)O(41) (A = Ca, Y and La) by NMR studies

被引：2

作者：

Kumagai, K ^{[1
]}

Tsuji, S ^{[1
]}

Maki, K ^{[1
]}

Kato, M ^{[1
]}

Koike, Y ^{[1
]}

机构：

[1] TOHOKU UNIV,FAC ENGN,DEPT APPL PHYS,SENDAI,MIYAGI 98077,JAPAN

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00747-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Hole-doping effects on spin dynamics of Sr(14-x)A(x)Cu(24)O(41) (A=Ca, Y and La) are investigated by Cu-NMR and NQR. The energy gaps in the spin excitation spectra (spin gap) are confirmed both for the CuO2 chain and the Cu2O3 ladder. The spin gap for the ladder decreases with increasing x in Sr14-xCaxCu24O41 and seems to collapse around x similar to 13. Preliminary NMR/NQR results of single crystals of Sr14-xCaxCu24O41 are reported.

引用

页码：1343 / 1344

页数：2

共 8 条

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