Fragile 3D Order in V$_{1-x}$Mo$_x$O$_2$
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2019
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866916302372732928 |
|---|---|
| author | Davenport, Matthew A. Krogstad, Matthew J. Whitt, Logan M. Hu, Chaowei Douglas, Tyra C. Ni, Ni Rosenkranz, Stephan Osborn, Raymond Allred, Jared M. |
| author_facet | Davenport, Matthew A. Krogstad, Matthew J. Whitt, Logan M. Hu, Chaowei Douglas, Tyra C. Ni, Ni Rosenkranz, Stephan Osborn, Raymond Allred, Jared M. |
| contents | The metal-to-insulator transition (MIT) in rutile VO$_2$ has proven uniquely difficult to characterize because of the complex interplay between electron correlations and atomic structure. Here we report the discovery of the sudden collapse of three-dimensional order in the low-temperature phase of V$_{1-x}$Mo$_x$O$_2$ at $x=0.17$ and the emergence of a novel frustrated two-dimensional order at $x=0.19$, with only a slight change in electronic properties. Single crystal diffuse x-ray scattering reveals that this transition from the 3D M1 phase to a 2D variant of the M2 phase results in long-range structural correlations along symmetry-equivalent (11L) planes of the tetragonal rutile structure, yet extremely short-range correlations transverse to these planes. These findings suggest that this two-dimensionality results from a novel form of geometric frustration that is essentially structural in origin. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1909_12704 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Fragile 3D Order in V$_{1-x}$Mo$_x$O$_2$ Davenport, Matthew A. Krogstad, Matthew J. Whitt, Logan M. Hu, Chaowei Douglas, Tyra C. Ni, Ni Rosenkranz, Stephan Osborn, Raymond Allred, Jared M. Strongly Correlated Electrons Materials Science The metal-to-insulator transition (MIT) in rutile VO$_2$ has proven uniquely difficult to characterize because of the complex interplay between electron correlations and atomic structure. Here we report the discovery of the sudden collapse of three-dimensional order in the low-temperature phase of V$_{1-x}$Mo$_x$O$_2$ at $x=0.17$ and the emergence of a novel frustrated two-dimensional order at $x=0.19$, with only a slight change in electronic properties. Single crystal diffuse x-ray scattering reveals that this transition from the 3D M1 phase to a 2D variant of the M2 phase results in long-range structural correlations along symmetry-equivalent (11L) planes of the tetragonal rutile structure, yet extremely short-range correlations transverse to these planes. These findings suggest that this two-dimensionality results from a novel form of geometric frustration that is essentially structural in origin. |
| title | Fragile 3D Order in V$_{1-x}$Mo$_x$O$_2$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/1909.12704 |