Multilayer Crystal Field states from locally broken centrosymmetry
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916722158600192 |
|---|---|
| author | Moulding, Owen Shimizu, Makoto Pawbake, Amit Gao, Yingzheng Ramakrishnan, Sitaram Garbarino, Gaston Caroca-Canales, Nubia Debray, Jérôme Faugeras, Clément Geibel, Christoph Yanase, Youichi Méasson, Marie-Aude |
| author_facet | Moulding, Owen Shimizu, Makoto Pawbake, Amit Gao, Yingzheng Ramakrishnan, Sitaram Garbarino, Gaston Caroca-Canales, Nubia Debray, Jérôme Faugeras, Clément Geibel, Christoph Yanase, Youichi Méasson, Marie-Aude |
| contents | Local charge, spin, or orbital degrees of freedom with intersite interactions are oftentimes sufficient to construct most quantum orders. This is conventionally true for f-electron systems, where the extent of the f-electrons and their associated crystal-electric-field (CEF) states are strongly localized. Here, polarized Raman spectroscopy measurements of a locally non-centrosymmetric compound, CeCoSi, unveil more CEF excitations than expected in the local model. We interpret this as experimental evidence for the entanglement of CEF states between cerium layers. This composite sublattice, spin, and orbital degree of freedom provides an unconsidered means to form novel orders, not only in this system, but in any system exhibiting globally preserved yet locally broken centrosymmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_03249 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multilayer Crystal Field states from locally broken centrosymmetry Moulding, Owen Shimizu, Makoto Pawbake, Amit Gao, Yingzheng Ramakrishnan, Sitaram Garbarino, Gaston Caroca-Canales, Nubia Debray, Jérôme Faugeras, Clément Geibel, Christoph Yanase, Youichi Méasson, Marie-Aude Strongly Correlated Electrons Superconductivity Local charge, spin, or orbital degrees of freedom with intersite interactions are oftentimes sufficient to construct most quantum orders. This is conventionally true for f-electron systems, where the extent of the f-electrons and their associated crystal-electric-field (CEF) states are strongly localized. Here, polarized Raman spectroscopy measurements of a locally non-centrosymmetric compound, CeCoSi, unveil more CEF excitations than expected in the local model. We interpret this as experimental evidence for the entanglement of CEF states between cerium layers. This composite sublattice, spin, and orbital degree of freedom provides an unconsidered means to form novel orders, not only in this system, but in any system exhibiting globally preserved yet locally broken centrosymmetry. |
| title | Multilayer Crystal Field states from locally broken centrosymmetry |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2505.03249 |