Topological quantum phase transition of nickelocene on Cu(100)
Local quantum phase transitions driven by Kondo correlations have been theoretically proposed in several magnetic nanosystems; however, clear experimental signatures are scant. Modeling a nickelocene molecule on a Cu(100) substrate as a two-orbital Anderson impurity with single-ion anisotropy couple...
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| Format: | Article |
| Language: | English |
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SciPost
2023-03-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.14.3.042 |
| _version_ | 1797866551073832960 |
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| author | Germán G. Blesio, Rok Žitko, Luis O. Manuel, Armando A. Aligia |
| author_facet | Germán G. Blesio, Rok Žitko, Luis O. Manuel, Armando A. Aligia |
| author_sort | Germán G. Blesio, Rok Žitko, Luis O. Manuel, Armando A. Aligia |
| collection | DOAJ |
| description | Local quantum phase transitions driven by Kondo correlations have been theoretically proposed in several magnetic nanosystems; however, clear experimental signatures are scant. Modeling a nickelocene molecule on a Cu(100) substrate as a two-orbital Anderson impurity with single-ion anisotropy coupled to two conduction bands, we find that recent scanning tunneling spectra reveal the existence of a topological quantum phase transition from the usual local Fermi liquid with high zero-bias conductance to a non-Landau Fermi liquid, characterized by a non-trivial quantized Luttinger integral, with a small conductance. The effects of intermediate valence, finite temperature, and structural relaxation of the molecule position allow us to explain the different observed behaviors. |
| first_indexed | 2024-04-09T23:25:55Z |
| format | Article |
| id | doaj.art-21b2ecabdf9142d9996518e3a4c07083 |
| institution | Directory Open Access Journal |
| issn | 2542-4653 |
| language | English |
| last_indexed | 2024-04-09T23:25:55Z |
| publishDate | 2023-03-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics |
| spelling | doaj.art-21b2ecabdf9142d9996518e3a4c070832023-03-21T10:30:45ZengSciPostSciPost Physics2542-46532023-03-0114304210.21468/SciPostPhys.14.3.042Topological quantum phase transition of nickelocene on Cu(100)Germán G. Blesio, Rok Žitko, Luis O. Manuel, Armando A. AligiaLocal quantum phase transitions driven by Kondo correlations have been theoretically proposed in several magnetic nanosystems; however, clear experimental signatures are scant. Modeling a nickelocene molecule on a Cu(100) substrate as a two-orbital Anderson impurity with single-ion anisotropy coupled to two conduction bands, we find that recent scanning tunneling spectra reveal the existence of a topological quantum phase transition from the usual local Fermi liquid with high zero-bias conductance to a non-Landau Fermi liquid, characterized by a non-trivial quantized Luttinger integral, with a small conductance. The effects of intermediate valence, finite temperature, and structural relaxation of the molecule position allow us to explain the different observed behaviors.https://scipost.org/SciPostPhys.14.3.042 |
| spellingShingle | Germán G. Blesio, Rok Žitko, Luis O. Manuel, Armando A. Aligia Topological quantum phase transition of nickelocene on Cu(100) SciPost Physics |
| title | Topological quantum phase transition of nickelocene on Cu(100) |
| title_full | Topological quantum phase transition of nickelocene on Cu(100) |
| title_fullStr | Topological quantum phase transition of nickelocene on Cu(100) |
| title_full_unstemmed | Topological quantum phase transition of nickelocene on Cu(100) |
| title_short | Topological quantum phase transition of nickelocene on Cu(100) |
| title_sort | topological quantum phase transition of nickelocene on cu 100 |
| url | https://scipost.org/SciPostPhys.14.3.042 |
| work_keys_str_mv | AT germangblesiorokzitkoluisomanuelarmandoaaligia topologicalquantumphasetransitionofnickeloceneoncu100 |