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http://hdl.handle.net/10261/234796
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dc.contributor.author | Sandiumenge, Felip | - |
dc.contributor.author | Rodríguez, L. | - |
dc.contributor.author | Pruneda, Miguel | - |
dc.contributor.author | Magén, César | - |
dc.contributor.author | Santiso, José | - |
dc.contributor.author | Catalán, Gustau | - |
dc.date.accessioned | 2021-03-14T10:50:45Z | - |
dc.date.available | 2021-03-14T10:50:45Z | - |
dc.date.issued | 2020-08-28 | - |
dc.identifier.uri | http://hdl.handle.net/10261/234796 | - |
dc.description.abstract | The observation of electronic phase separation textures in vanadium dioxide (VO2), a prototypical electron-correlated oxide, has recently added new perspectives on the long standing debate about its metal-insulator transition and its applications. Yet, the lack of atomically-resolved information on phases accompanying such complex patterns still hinders a comprehensive understanding of the transition and its implementation in practical devices. In this work, atomic resolution imaging and spectroscopy of strained VO2 films unveils the existence of multicomponent ferroelastic-martensitic tweed structures on ~5 nm length scales, well below the resolution limit of currently employed X-ray spectroscopic imaging techniques (Figure 1a). Density functional theory calculations show that such fine tweeds are formed by an unreported metallic structure (x3M), formed by partially dimerized V-chains, that appears tetragonal (rutile) on average, but is locally monoclinic (Figure 1b). These observations suggest that the metal/insulator coexistence among low-symmetry forms of VO2 is driven by lattice degrees of freedom, and provide a multiscale perspective for the interpretation of existing data, whereby phase coexistence and structural intermixing can occur all the way down to the atomic scale [2]. | - |
dc.language | eng | - |
dc.rights | closedAccess | - |
dc.title | Metallic diluted dimerization in VO2 tweeds | - |
dc.type | actas de congreso | - |
dc.date.updated | 2021-03-14T10:50:46Z | - |
dc.relation.csic | Sí | - |
dc.type.coar | http://purl.org/coar/resource_type/c_f744 | es_ES |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | none | - |
item.fulltext | No Fulltext | - |
item.openairetype | actas de congreso | - |
Aparece en las colecciones: | (ICMAB) Comunicaciones congresos |
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