Role of antisite disorder, electron-electron correlations, and a surface valence transition in the electronic structure of CeMnNi4
| dc.contributor.author | Sadhukhan, Pampa | |
| dc.contributor.author | Dsouza, Sunil Wilfred | |
| dc.contributor.author | Singh, Vipin Kumar | |
| dc.contributor.author | Dhaka, Rajendra Singh | |
| dc.contributor.author | Gloskovskii, Andrei | |
| dc.contributor.author | Dhar, Sudesh Kumar | |
| dc.contributor.author | Raychaudhuri, Pratap | |
| dc.contributor.author | Chainani, Ashish | |
| dc.contributor.author | Chakrabarti, Aparna | |
| dc.contributor.author | Barman, Sudipta Roy | |
| dc.date.accessioned | 2021-12-13T11:00:19Z | |
| dc.date.available | 2021-12-13T11:00:19Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract-translated | CeMnNi4 exhibits an unusually large spin polarization, but its origin has baffled researchers for more than a decade. We use bulk sensitive hard x-ray photoelectron spectroscopy (HAXPES) and density functional theory based on the Green's function technique to demonstrate the importance of electron-electron correlations of both the Ni 3d (U-Ni) and Mn 3d (U-mn) electrons in explaining the valence band of this multiply correlated material. We show that Mn-Ni antisite disorder as well as U Ni play a crucial role in enhancing its spin polarization: Antisite disorder broadens a Ni 3d minority-spin peak close to the Fermi level (E-F), while an increase in U-Ni shifts it toward E-F, both leading to a significant increase of minority-spin states at E-F. Furthermore, the rare occurrence of a valence state transition between the bulk and the surface is demonstrated highlighting the importance of HAXPES in resolving the electronic structure of materials unhindered by surface effects. | en |
| dc.format | 10 s. | cs |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | SADHUKHAN, P. DSOUZA, SW. SINGH, VK. DHAKA, RS. GLOSKOVSKII, A. DHAR, SK. RAYCHAUDHURI, P. CHAINANI, A. CHAKRABARTI, A. BARMAN, SR. Role of antisite disorder, electron-electron correlations, and a surface valence transition in the electronic structure of CeMnNi4. Physical Review B, 2019, roč. 99, č. 3, s. nestránkováno. ISSN: 2469-9950 | cs |
| dc.identifier.document-number | 454766400002 | |
| dc.identifier.doi | 10.1103/PhysRevB.99.035102 | |
| dc.identifier.issn | 2469-9950 | |
| dc.identifier.obd | 43933221 | |
| dc.identifier.uri | 2-s2.0-85059910848 | |
| dc.identifier.uri | http://hdl.handle.net/11025/46316 | |
| dc.language.iso | en | en |
| dc.project.ID | EF15_003/0000358/Výpočetní a experimentální design pokročilých materiálů s novými funkcionalitami | cs |
| dc.publisher | American Physical Society | en |
| dc.relation.ispartofseries | Physical Review B | en |
| dc.rights | Plný text není přístupný. | cs |
| dc.rights | © American Physical Society | en |
| dc.rights.access | closedAccess | en |
| dc.subject.translated | photoemission | en |
| dc.subject.translated | CE | en |
| dc.subject.translated | state | en |
| dc.subject.translated | XPS | en |
| dc.title | Role of antisite disorder, electron-electron correlations, and a surface valence transition in the electronic structure of CeMnNi4 | en |
| dc.type | článek | cs |
| dc.type | article | en |
| dc.type.status | Peer-reviewed | en |
| dc.type.version | publishedVersion | en |