Spin dynamics and magnetic order in magnetically frustrated Tb2Sn2O7

被引：82

作者：

de Réotier, PD ^{[1
]}

Yaouanc, A

Keller, L

Cervellino, A

Roessli, B

Baines, C

Forget, A

Vaju, C

Gubbens, PCM

Amato, A

King, PJC

机构：

[1] CEA, DSM, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble, France

[2] ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[3] Paul Scherrer Inst, Low Temp Facil Grp, CH-5232 Villigen, Switzerland

[4] CEA, DSM, Dept Rech Etat Condensee Atomes & Mol, F-91191 Gif Sur Yvette, France

[5] Delft Univ Technol, Dept Radiat Radionuclides & Reactors, NL-2629 JB Delft, Netherlands

[6] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland

[7] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.96.127202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a study of the geometrically frustrated magnetic material Tb2Sn2O7 by the positive muon-spin relaxation technique. No signature of a static magnetically ordered state is detected while neutron magnetic reflections are observed in agreement with a published report. This is explained by the dynamical nature of the ground state of Tb2Sn2O7: the Tb3+ magnetic moment characteristic fluctuation time is similar or equal to 10(-10) s. The strong effect of the magnetic field on the muon-spin-lattice relaxation rate at low fields indicates a large field-induced increase of the magnetic density of states of the collective excitations at low energy.

引用

页数：4

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