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dc.contributor.authorK. Matanen_US
dc.contributor.authorT. Onoen_US
dc.contributor.authorY. Fukumotoen_US
dc.contributor.authorT. J. Satoen_US
dc.contributor.authorJ. Yamauraen_US
dc.contributor.authorM. Yanoen_US
dc.contributor.authorK. Moritaen_US
dc.contributor.authorH. Tanakaen_US
dc.contributor.otherUniversity of Tokyoen_US
dc.contributor.otherTokyo Institute of Technologyen_US
dc.contributor.otherTokyo University of Scienceen_US
dc.contributor.otherMahidol Universityen_US
dc.identifier.citationNature Physics. Vol.6, No.11 (2010), 865-869en_US
dc.description.abstractDetermining ground states of correlated electron systems is fundamental to understanding unusual phenomena in condensed-matter physics. A difficulty, however, arises in a geometrically frustrated system in which the incompatibility between the global topology of an underlying lattice and local spin interactions gives rise to macroscopically degenerate ground states1, potentially prompting the emergence of quantum spin states, such as resonating valence bond2-7and valence-bond solid8-11(VBS). Although theoretically proposed to exist in a kagome lattice-one of the most highly frustrated lattices in two dimensions being comprised of corner-sharing triangles-such quantum-fluctuation-induced states have not been observed experimentally. Here we report the first realization of the 'pinwheel' VBS ground state in the S=1/2 deformed kagome lattice antiferromagnet Rb2Cu3SnF12(refs 12, 13). In this system, a lattice distortion breaks the translational symmetry of the ideal kagome lattice and stabilizes the VBS state. © 2010 Macmillan Publishers Limited. All rights reserved.en_US
dc.rightsMahidol Universityen_US
dc.subjectPhysics and Astronomyen_US
dc.titlePinwheel valence-bond solid and triplet excitations in the two-dimensional deformed kagome latticeen_US
Appears in Collections:Scopus 2006-2010

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