High Field ESR Study of the New Low Dimensional S=1/2 System: Cu(NO3)2a⟨...H2O

被引：1

作者：

Yehia, M. ^{[1
]}

Vavilova, E. ^{[1
,2
]}

Kataev, V. ^{[1
]}

Klingeler, R. ^{[1
]}

Volkova, O. ^{[3
,4
]}

Lapsheva, E. ^{[4
]}

Shutov, V. ^{[4
]}

Savelieva, O. ^{[4
]}

Vasiliev, A. N. ^{[4
]}

Buechner, B. ^{[1
]}

机构：

[1] IFW Dresden, Leibniz Inst Solid State & Mat Res, Dresden, Germany

[2] RAS, Zavoisky Phys Tech Inst, Kazan, Russia

[3] Inst Radiotech & Elect, Moscow, Russia

[4] Moscow MV Lomonosov State Univ, Moscow, Russia

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2010年 / 159卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

High field ESR; NMR; Low dimensional spin systems; LOW-TEMPERATURE; GROUND-STATE; CU(NO3)(2); H2O;

D O I：

10.1007/s10909-009-0090-x

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cu(NO3)(2)a <...H2O is a new S=1/2 system based on transition metal nitrates and contains two-dimensional Cu2+ (S=1/2) layers. We studied single crystalline samples by means of high field (HF) ESR and NMR. Cu2+ HF-ESR and H-1-NMR data reveal pronounced spin-spin correlations at temperatures much higher than the antiferromagnetic ordering temperature T (N similar to)3.6 K. These observations clearly suggest a two-dimensional character of magnetic interactions in Cu(NO3)(2)a <...H2O. We discuss the obtained results by considering the possible exchange paths between inequivalent Cu-sites in this compound.

引用

页码：96 / 100

页数：5

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