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
收藏
页码：96 / 100
页数：5
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