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Atomic manipulation of in-gap states in the beta-Bi2Pd superconductor
- Title
- Atomic manipulation of in-gap states in the beta-Bi2Pd superconductor
- Authors
- Mier, Cristina; Hwang, Jiyoon; Kim, Jinkyung; Bae, Yujeong; Nabeshima, Fuyuki; Imai, Yoshinori; Maeda, Atsutaka; Lorente, Nicolas; Heinrich, Andreas; Choi, Deung-Jang
- Ewha Authors
- Andreas Heinrich; 배유정
- SCOPUS Author ID
- Andreas Heinrich; 배유정
- Issue Date
- 2021
- Journal Title
- PHYSICAL REVIEW B
- ISSN
- 2469-9950
2469-9969
- Citation
- PHYSICAL REVIEW B vol. 104, no. 4
- Publisher
- AMER PHYSICAL SOC
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- 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-Bi2Pd 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 nontrivial 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 parameters apart and one with root 2. lattice parameters. Of these, only the second one is in a topologically nontrivial phase, in agreement with the spin interactions for this geometry.
- DOI
- 10.1103/PhysRevB.104.045406
- Appears in Collections:
- 자연과학대학 > 물리학전공 > Journal papers
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