Unidirectional Kondo scattering in layered NbS2
| Autor: | Martino, Edoardo, Putzke, Carsten, König, Markus, Moll, Philip, Berger, Helmuth, LeBoeuf, David, Leroux, Maxime, Proust, Cyril, Akrap, Ana, Kirmse, Holm, Koch, Christoph, Zhang, ShengNan, Wu, QuanSheng, Yazyev, Oleg V., Forró, László, Semeniuk, Konstantin |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | npj 2D Materials and Applications volume 5, Article number: 86 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41699-021-00265-6 |
| Popis: | Crystalline defects can modify quantum interactions in solids, causing unintuitive, even favourable, properties such as quantum Hall effect or superconducting vortex pinning. Here we present another example of this notion - an unexpected unidirectional Kondo scattering in single crystals of 2H-NbS2. This manifests as a pronounced low-temperature enhancement in the out-of-plane resistivity and thermopower below 40 K, hidden for the in-plane charge transport. The anomaly can be suppressed by the c-axis-oriented magnetic field, but is unaffected by field applied along the planes. The magnetic moments originate from layers of 1T-NbS2, which inevitably form during the growth, undergoing a charge-density-wave reconstruction with each superlattice cell (David-star-shaped cluster of Nb atoms) hosting a localised spin. Our results demonstrate the unique and highly anisotropic response of a spontaneously formed Kondo lattice heterostructure, intercalated in a layered conductor. Comment: 44 pages, including the article, 5 figures, and Supplementary Information (6 notes, 9 figures, and 1 table) |
| Databáze: | arXiv |
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