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dc.contributor.authorMoskvin, A. S.en
dc.contributor.authorGippius, A. A.en
dc.contributor.authorTkachev, A. V.en
dc.contributor.authorMahajan, A. V.en
dc.contributor.authorChakrabarty, T.en
dc.contributor.authorPresniakov, I. A.en
dc.contributor.authorSobolev, A. V.en
dc.contributor.authorDemazeau, G.en
dc.date.accessioned2017-09-04T14:45:46Z-
dc.date.available2017-09-04T14:45:46Z-
dc.date.issued2012-
dc.identifier.citationDirect evidence of non-Zhang-Rice Cu3+ centers in La2Li0.5Cu0.5O4 / A. S. Moskvin, A. A. Gippius, A. V. Tkachev, A. V. Mahajan, T. Chakrabarty, I. A. Presniakov, A. V. Sobolev, G. Demazeau // Physical Review B - Condensed Matter and Materials Physics. — 2012. — Vol. 86. — № 24.en
dc.identifier.issn1098-0121-
dc.identifier.issn1550-235X-
dc.identifier.other1good_DOI
dc.identifier.other0910aa5f-0fb9-45bf-8501-7f69dcf7ef33pure_uuid
dc.identifier.otherhttp://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=84871594998m
dc.identifier.urihttp://elar.urfu.ru/handle/10995/51362-
dc.description.abstractA well-isolated Zhang-Rice (ZR) singlet as a ground state of the Cu3 + center in hole-doped cuprates is a leading paradigm in modern theories of high-temperature superconductivity. However, a dramatic temperature evolution of the 67Li NMR signal in La2Li0.5Cu 0.5O4, a system with a regular lattice of well-isolated Cu3+ centers, reveals significant magnetic fluctuations and suggests a quasidegeneracy to be a generic property of their ground state at variance with the simple ZR model. We argue for a competition of the ZR state with nearby states formed by a "doped" hole occupying purely oxygen nonbonding a2g(π) and eu(π) orbitals rather than a conventional b1g(dx2-y2) Cu 3d-O 2p hybrid. The temperature variation of the 6,7Li NMR line shape and spin-lattice relaxation rate point to a gradual slowing down of some magnetic order parameter's fluctuations without distinct signatures of a phase transition down to T=2 K. This behavior agrees with a stripelike ferrodistortive fluctuating Ammm order in a two-dimensional structure of the (CuLi)O2 planes accompanied by unconventional oxygen orbital antiferromagnetic fluctuations. © 2012 American Physical Society.en
dc.language.isoenen
dc.sourcePhysical Review B - Condensed Matter and Materials Physicsen
dc.titleDirect evidence of non-Zhang-Rice Cu3+ centers in La2Li0.5Cu0.5O4en
dc.typeArticleen
dc.typeinfo:eu-repo/semantics/publishedVersionen
dc.typeinfo:eu-repo/semantics/articleen
dc.identifier.doi10.1103/PhysRevB.86.241107-
dc.identifier.scopus84871594998-
local.contributor.employeeМосквин Александр Сергеевичru
local.issue24-
local.volume86-
dc.identifier.wos000312365800002-
local.contributor.departmentИнститут естественных наук и математикиru
local.identifier.pure1065763-
local.description.order241107-
local.identifier.eid2-s2.0-84871594998-
local.identifier.wosWOS:000312365800002-
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