| Autor: |
Mier, Cristina, Hwang, Jiyoon, Kim, Jinkyung, Bae, Yujeong, Nabeshima, Fuyuki, Imai, Yoshinori, Maeda, Atsutaka, Lorente, Nicolás, Heinrich, Andreas, Choi, Deung-Jang |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 104, 045406 (2021) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.104.045406 |
| Popis: |
Electronic states in the gap of a superconductor inherit intriguing many-body properties from the superconductor. Here, we create these in-gap states by manipulating Cr atomic chains on the $\beta$-Bi$_2$Pd superconductor. We find that the topological properties of the in-gap states can greatly vary depending on the crafted spin chain. These systems make an ideal platform for non-trivial topological phases because of the large atom-superconductor interactions and the existence of a large Rashba coupling at the Bi-terminated surface. We study two spin chains, one with atoms two-lattice-parameter apart and one with square-root-of-two lattice parameters. Of these, only the second one is in a topologically non-trivial phase, in correspondence with the spin interactions for this geometry. |
| Databáze: |
arXiv |
| Externí odkaz: |
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