Structural Study of CuNCN and Its Theoretical Implications: A Case of a Resonating-Valence-Bond State?
Structural Study of CuNCN and Its Theoretical Implications: A Case of a Resonating-Valence-Bond State?
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CuNCN 的结构研究及其理论意义:以共振价键态为例?
DOI:
10.1021/jz301722b
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发表时间:
2012
影响因子:
5.7
通讯作者:
R. Dronskowski
中科院分区:
文献类型:
--
作者:
A. L. Tchougréeff;X. Liu;P. Müller;W. Van Beek;U. Ruschewitz;R. Dronskowski
We present the results of a high-resolution low-temperature synchrotron structural study of the nitrogen-containing analogue of cupric oxide, copper carbodiimide (CuNCN). The material clearly manifests a surprising nonmonotonous behavior of thealattice parameter as a function of the temperature: its decrease with decreasing temperature turns to a distinguishableincreasebelow 100 K. The onset temperature of this anomaly nearly coincides with that of the onset of the activation temperature dependence, as seen from the magnetic susceptibility, which has been tentatively attributed to the formation of a gapped 2D spin-liquid (resonating-valence-bond) state. In accord with this assumption, we develop a theory relating the temperature behavior of the spin susceptibility to that of the lattice parameter, which semiquantitatively agrees with the observed behavior.
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影响因子:
15
作者:
L. Pauling
通讯作者:
L. Pauling
影响因子:
--
作者:
H. Fukutome;M. Sasai
通讯作者:
M. Sasai
DOI:
10.1007/bf01303701
发表时间:
1986-01-01
期刊:
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER
影响因子:
--
作者:
BEDNORZ, JG;MULLER, KA
通讯作者:
MULLER, KA
影响因子:
2.7
作者:
Chatterji, Tapan;Hansen, Thomas C.
通讯作者:
Hansen, Thomas C.
影响因子:
3.3
作者:
C. Vecchini;O. Adamopoulos;L. Chapon;A. Lappas;H. Kageyama;Y. Ueda;A. Zorko
通讯作者:
A. Zorko