Chiral Spin Texture in the Charge-Density-Wave Phase of the Correlated Metallic Pb / Si ( 111 ) Monolayer
| Autor: | Tresca, C., Brun, C., Bilgeri, T., Menard, G., Cherkez, V., Federicci, R., Longo, D., Debontridder, F., D’angelo, M., Roditchev, D., Profeta, G., Calandra, M., Cren, T. |
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| Přispěvatelé: | Spectroscopie des nouveaux états quantiques (INSP-E2), Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Department of Physical and Chemical Sciences [L'Aquila] (DSFC), Università degli Studi dell'Aquila (UNIVAQ), Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) (LPEM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2018, 120 (19), pp.196402. ⟨10.1103/PhysRevLett.120.196402⟩ |
| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/PhysRevLett.120.196402⟩ |
| Popis: | International audience; We investigate the 1=3 monolayer α-Pb=Sið111Þ surface by scanning tunneling spectroscopy (STS) and fully relativistic first-principles calculations. We study both the high-temperature ffiffi ffi 3 p × ffiffi ffi 3 p and low-temperature 3 × 3 reconstructions and show that, in both phases, the spin-orbit interaction leads to an energy splitting as large as 25% of the valence-band bandwidth. Relativistic effects, electronic correlations, and Pb-substrate interaction cooperate to stabilize a correlated low-temperature paramagnetic phase with well-developed lower and upper Hubbard bands coexisting with 3 × 3 periodicity. By comparing the Fourier transform of STS conductance maps at the Fermi level with calculated quasiparticle interference from nonmagnetic impurities, we demonstrate the occurrence of two large hexagonal Fermi sheets with in-plane spin polarizations and opposite helicities. |
| Databáze: | OpenAIRE |
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