info/FAQ

Research articles

My Pages

Stat

Members: 3645
Articles: 2'501'711
Articles rated: 2609

19 April 2024

» arxiv » cond-mat/0606445

Article overview

Orbitally driven spin-singlet dimerization in $S$=1 La$_{4}$Ru$_{2}$O$_{10}$
Hua Wu ; Z. Hu ; T. Burnus ; J. D. Denlinger ; P. G. Khalifah ; D. Mandrus ; L.-Y. Jang ; H. H. Hsieh ; A. Tanaka ; K. S. Liang ; J. W. Allen ; R. J. Cava ; D. I. Khomskii ; L. H. Tjeng ;
Date:	16 Jun 2006
Journal:	Phys. Rev. Lett. 96, 256402 (2006)
Subject:	Strongly Correlated Electrons
Abstract:	Using x-ray absorption spectroscopy at the Ru-$L_{2,3}$ edge we reveal that the Ru$^{4+}$ ions remain in the $S$=1 spin state across the rare 4d-orbital ordering transition and spin-gap formation. We find using local spin density approximation + Hubbard U (LSDA+U) band structure calculations that the crystal fields in the low temperature phase are not strong enough to stabilize the $S$=0 state. Instead, we identify a distinct orbital ordering with a significant anisotropy of the antiferromagnetic exchange couplings. We conclude that La$_{4}$Ru$_{2}$O$_{10}$ appears to be a novel material in which the orbital physics drives the formation of spin-singlet dimers in a quasi 2-dimensional $S$=1 system.
Source:	arXiv, cond-mat/0606445
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap