CuSiO3: A candidate system for purely oxygen antiferromagnet? / Gippius AA,Moskvin AS,Baenitz M,Drechsler SL,Morozova EN,Otto HH // EUROPHYSICS LETTERS. - 2003. - V. 63, l. 2. - P. 282-288.

ISSN/EISSN:

0295-5075 / нет данных

Type:

Article

Abstract:

Nuclear quadrupole resonance (Cu-63,Cu-65-NQR) measurements in CuSiO3 have revealed an unexpected puzzling picture evidencing the absence of a noticeable local hyperfine magnetic field on Cu-63,Cu-65 nuclei in the antiferromagnetically ordered state below T-N approximate to 8.0 K, and considerable charge redistribution as compared with the CuGeO3 counterpart system. Unconventional ``nonmagnetic{''} behavior of copper ions in CuSiO3 points to a possibly nonmagnetic Cu1+ copper valent state with antiferromagnetically ordered oxygen surroundings. It means that the hole in the CuO2 cell should be localized at oxygen, rather than at copper sites. We suggest a qualitative physical reasoning for the ``sp hybridization induced oxygen hole stabilization effect{''} which is believed to be more pronounced in CuSiO3 as compared with CuGeO3.

Author keywords:

CUGEO3; SPIN

DOI:

10.1209/epl/i2003-00516-1

Web of Science ID:

ISI:000184099100019

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Publisher	E D P SCIENCES
Address	7, AVE DU HOGGAR, PARC D ACTIVITES COURTABOEUF, BP 112, F-91944 LES ULIS CEDEXA, FRANCE
Language	English
Keywords-Plus	CUGEO3; SPIN
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
ResearcherID-Numbers	Baenitz, Michael/E-4085-2016 Gippius, Andrey/D-1139-2010
Number-of-Cited-References	15
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	12
Journal-ISO	Europhys. Lett.
Doc-Delivery-Number	700EF