Discovery of Giant Unit-Cell Super-Structure in the Infinite-Layer Nickelate PrNiO$_2$
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866916563206012928 |
|---|---|
| author | Oppliger, J. Küspert, J. Dippel, A. -C. Zimmermann, M. v. Gutowski, O. Ren, X. Zhou, X. J. Zhu, Z. Frison, R. Wang, Q. Martinelli, L. Biało, I. Chang, J. |
| author_facet | Oppliger, J. Küspert, J. Dippel, A. -C. Zimmermann, M. v. Gutowski, O. Ren, X. Zhou, X. J. Zhu, Z. Frison, R. Wang, Q. Martinelli, L. Biało, I. Chang, J. |
| contents | Spectacular quantum phenomena such as superconductivity often emerge in flat-band systems where Coulomb interactions overpower electron kinetics. Engineering strategies for flat-band physics is therefore of great importance. Here, using high-energy grazing-incidence x-ray diffraction, we demonstrate how in-situ temperature annealing of the infinite-layer nickelate PrNiO$_2$ induces a giant superlattice structure. The annealing effect has a maximum well above room temperature. By covering a large scattering volume, we show a rare period-six in-plane (bi-axial) symmetry and a period-four symmetry in the out-of-plane direction. This giant unit-cell superstructure likely stems from ordering of diffusive oxygen. The stability of this superlattice structure suggests a connection to an energetically favorable electronic state of matter. As such, our study provides a new pathway - different from Moiré structures - to ultra-small Brillouin zone electronics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_17795 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Discovery of Giant Unit-Cell Super-Structure in the Infinite-Layer Nickelate PrNiO$_2$ Oppliger, J. Küspert, J. Dippel, A. -C. Zimmermann, M. v. Gutowski, O. Ren, X. Zhou, X. J. Zhu, Z. Frison, R. Wang, Q. Martinelli, L. Biało, I. Chang, J. Superconductivity Materials Science Spectacular quantum phenomena such as superconductivity often emerge in flat-band systems where Coulomb interactions overpower electron kinetics. Engineering strategies for flat-band physics is therefore of great importance. Here, using high-energy grazing-incidence x-ray diffraction, we demonstrate how in-situ temperature annealing of the infinite-layer nickelate PrNiO$_2$ induces a giant superlattice structure. The annealing effect has a maximum well above room temperature. By covering a large scattering volume, we show a rare period-six in-plane (bi-axial) symmetry and a period-four symmetry in the out-of-plane direction. This giant unit-cell superstructure likely stems from ordering of diffusive oxygen. The stability of this superlattice structure suggests a connection to an energetically favorable electronic state of matter. As such, our study provides a new pathway - different from Moiré structures - to ultra-small Brillouin zone electronics. |
| title | Discovery of Giant Unit-Cell Super-Structure in the Infinite-Layer Nickelate PrNiO$_2$ |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2404.17795 |