Jahn-Teller induced nematic orbital order in tetragonal Sr2VO4

dc.contributor.author	Teyssier J.
dc.contributor.author	Giannini E.
dc.contributor.author	Stucky A.
dc.contributor.author	Černý R.
dc.contributor.author	Eremin M.
dc.contributor.author	Van Der Marel D.
dc.date.accessioned	2018-09-19T23:07:48Z
dc.date.available	2018-09-19T23:07:48Z
dc.date.issued	2016
dc.identifier.issn	2469-9950
dc.identifier.uri	https://dspace.kpfu.ru/xmlui/handle/net/145963
dc.description.abstract	© 2016 American Physical Society.Using high resolution x-ray diffraction (XRD) on high purity powders, we resolved the structure and ab symmetry of the intriguing compound Sr2VO4 from room temperature down to 20 K to an unprecedented level of accuracy. Upon cooling, this set of data unambiguously reveals a second-order phase transition lowering the symmetry from tetragonal to orthorhombic at a temperature Tc2=136 K. The observation of an orthorhombic distortion of the ab plane is attributed to nematic phase formation supported by local Jahn-Teller (JT) dynamical instability. At TN=105 K, spins order and at Tc1=100 K the tetragonal structure is recovered with an elongated c axis.
dc.relation.ispartofseries	Physical Review B
dc.title	Jahn-Teller induced nematic orbital order in tetragonal Sr2VO4
dc.type	Article
dc.relation.ispartofseries-issue	12
dc.relation.ispartofseries-volume	93
dc.collection	Публикации сотрудников КФУ
dc.source.id	SCOPUS24699950-2016-93-12-SID84962070926

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