Universität zu Köln

Park, Junghwan, Tan, Teck-Yee, Adroja, D. T., Daoud-Aladine, A., Choi, Seongil, Cho, Deok-Yong ORCID: 0000-0001-5789-8286, Lee, Sang-Hyun, Kim, Jiyeon, Sim, Hasung, Morioka, T., Nojiri, H., Krishnamurthy, V. V., Manuel, P., Lees, M. R., Streltsov, S. V., Khomskii, D. I. and Park, Je-Geun (2016). Robust singlet dimers with fragile ordering in two-dimensional honeycomb lattice of Li2RuO3. Sci Rep, 6. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

When an electronic system has strong correlations and a large spin-orbit interaction, it often exhibits a plethora of mutually competing quantum phases. How a particular quantum ground state is selected out of several possibilities is a very interesting question. However, equally fascinating is how such a quantum entangled state breaks up due to perturbation. This important question has relevance in very diverse fields of science from strongly correlated electron physics to quantum information. Here we report that a quantum entangled dimerized state or valence bond crystal (VBC) phase of Li2RuO3 shows nontrivial doping dependence as we perturb the Ru honeycomb lattice by replacing Ru with Li. Through extensive experimental studies, we demonstrate that the VBC phase melts into a valence bond liquid phase of the RVB (resonating valence bond) type. This system offers an interesting playground where one can test and refine our current understanding of the quantum competing phases in a single compound.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Park, Junghwan UNSPECIFIED UNSPECIFIED UNSPECIFIED Tan, Teck-Yee UNSPECIFIED UNSPECIFIED UNSPECIFIED Adroja, D. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Daoud-Aladine, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Choi, Seongil UNSPECIFIED UNSPECIFIED UNSPECIFIED Cho, Deok-Yong UNSPECIFIED orcid.org/0000-0001-5789-8286 UNSPECIFIED Lee, Sang-Hyun UNSPECIFIED UNSPECIFIED UNSPECIFIED Kim, Jiyeon UNSPECIFIED UNSPECIFIED UNSPECIFIED Sim, Hasung UNSPECIFIED UNSPECIFIED UNSPECIFIED Morioka, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nojiri, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Krishnamurthy, V. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Manuel, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lees, M. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Streltsov, S. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Khomskii, D. I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Park, Je-Geun UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-275996
DOI:	10.1038/srep25238
Journal or Publication Title:	Sci Rep
Volume:	6
Date:	2016
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27599