Matches in SemOpenAlex for { <https://semopenalex.org/work/W1649438477> ?p ?o ?g. }
Showing items 1 to 64 of
64
with 100 items per page.
- W1649438477 abstract "We study with the Raman scattering technique two types of phase transitions in the pyroxene compounds NaMSi$_2$O$_6$ (with M=Ti, V, and Cr). In the quasi one-dimensional S=1/2 system NaTiSi$_2$O$_6$ we observe anomalous high-temperature phonon broadening and large changes of the phonon energies and line-widths across the phase transition at 210 K. The phonon anomalies originate from an orbital order-disorder phase transition and these results --combined with theoretical considerations-- indicate that the high temperature dynamical Jahn-Teller phase of NaTiSi$_2$O$_6$ exhibits a spontaneous breaking of translational symmetry into a dimerized, Jahn-Teller distorted, orbital ordered state under the formation of spin valence bonds. In S=1 NaVSi$_2$O$_6$ orbital degrees of freedom are strongly suppressed and the magnetic excitations are well described within a Heisenberg model, indicating that at T$_N$=19K this system orders antiferromagnetically." @default.
- W1649438477 created "2016-06-24" @default.
- W1649438477 creator A5001766004 @default.
- W1649438477 creator A5027271759 @default.
- W1649438477 creator A5034235613 @default.
- W1649438477 creator A5045044391 @default.
- W1649438477 creator A5068934557 @default.
- W1649438477 creator A5081481883 @default.
- W1649438477 date "2002-10-09" @default.
- W1649438477 modified "2023-09-27" @default.
- W1649438477 title "Orbital Dimerization and Dynamic Jahn-Teller Effect in NaTiSi$_2$O$_6$" @default.
- W1649438477 cites W1994147504 @default.
- W1649438477 doi "https://doi.org/10.48550/arxiv.cond-mat/0210191" @default.
- W1649438477 hasPublicationYear "2002" @default.
- W1649438477 type Work @default.
- W1649438477 sameAs 1649438477 @default.
- W1649438477 citedByCount "0" @default.
- W1649438477 crossrefType "posted-content" @default.
- W1649438477 hasAuthorship W1649438477A5001766004 @default.
- W1649438477 hasAuthorship W1649438477A5027271759 @default.
- W1649438477 hasAuthorship W1649438477A5034235613 @default.
- W1649438477 hasAuthorship W1649438477A5045044391 @default.
- W1649438477 hasAuthorship W1649438477A5068934557 @default.
- W1649438477 hasAuthorship W1649438477A5081481883 @default.
- W1649438477 hasBestOaLocation W16494384771 @default.
- W1649438477 hasConcept C121332964 @default.
- W1649438477 hasConcept C145148216 @default.
- W1649438477 hasConcept C149288129 @default.
- W1649438477 hasConcept C168900304 @default.
- W1649438477 hasConcept C169573571 @default.
- W1649438477 hasConcept C185592680 @default.
- W1649438477 hasConcept C24169881 @default.
- W1649438477 hasConcept C26873012 @default.
- W1649438477 hasConcept C40003534 @default.
- W1649438477 hasConcept C62520636 @default.
- W1649438477 hasConcept C83981384 @default.
- W1649438477 hasConceptScore W1649438477C121332964 @default.
- W1649438477 hasConceptScore W1649438477C145148216 @default.
- W1649438477 hasConceptScore W1649438477C149288129 @default.
- W1649438477 hasConceptScore W1649438477C168900304 @default.
- W1649438477 hasConceptScore W1649438477C169573571 @default.
- W1649438477 hasConceptScore W1649438477C185592680 @default.
- W1649438477 hasConceptScore W1649438477C24169881 @default.
- W1649438477 hasConceptScore W1649438477C26873012 @default.
- W1649438477 hasConceptScore W1649438477C40003534 @default.
- W1649438477 hasConceptScore W1649438477C62520636 @default.
- W1649438477 hasConceptScore W1649438477C83981384 @default.
- W1649438477 hasLocation W16494384771 @default.
- W1649438477 hasOpenAccess W1649438477 @default.
- W1649438477 hasPrimaryLocation W16494384771 @default.
- W1649438477 hasRelatedWork W1665445490 @default.
- W1649438477 hasRelatedWork W1966359461 @default.
- W1649438477 hasRelatedWork W2014902795 @default.
- W1649438477 hasRelatedWork W2025392300 @default.
- W1649438477 hasRelatedWork W2027923092 @default.
- W1649438477 hasRelatedWork W2043107933 @default.
- W1649438477 hasRelatedWork W2127274125 @default.
- W1649438477 hasRelatedWork W2282294807 @default.
- W1649438477 hasRelatedWork W2994962964 @default.
- W1649438477 hasRelatedWork W3147922020 @default.
- W1649438477 isParatext "false" @default.
- W1649438477 isRetracted "false" @default.
- W1649438477 magId "1649438477" @default.
- W1649438477 workType "article" @default.