HO3+ DIMER EXCITATIONS IN HO0.1Y0.9BA2CU3OX (6.6-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-7.0)

被引：14

作者：

GUILLAUME, M

STAUB, U

FAUTH, F

MESOT, J

FURRER, A

CARLILE, CJ

机构：

[1] ETH ZURICH,NEUTRONENSTREUUNG LAB,CH-5232 VILLIGEN PSI,SWITZERLAND

[2] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

来源：

PHYSICA C | 1994年 / 223卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(94)91277-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The inelastic neutron-scattering technique was used to measure the magnetic excitations in Ho0.1Y0.9Ba2Cu3Ox (6.6 less-than-or-equal-to x less-than-or-equal-to 7.0) at T = 1.5 K The observed energy spectra correspond to a superposition of mainly Ho3+ monomer and dimer excitations. From the latter we derive the magnetic coupling strengths of Ho3+ pairs in the (a, b)-plane. The lineshape of the magnetic excitations turns out to be highly asymmetric for which we discuss various mechanisms in terms of fluctuating fields at the Ho3+ sites.

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页码：333 / 338

页数：6

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