Atomic manipulation of in-gap states in the β-Bi2Pd superconductor

被引：22

作者：

Mier, Cristina ^{[1
]}

Hwang, Jiyoon ^{[2
,3
]}

Kim, Jinkyung ^{[2
,3
]}

Bae, Yujeong ^{[2
,3
]}

Nabeshima, Fuyuki ^{[4
]}

Imai, Yoshinori ^{[4
,5
]}

Maeda, Atsutaka ^{[4
]}

Lorente, Nicolas ^{[1
,6
]}

Heinrich, Andreas ^{[2
,3
]}

Choi, Deung-Jang ^{[1
,6
,7
]}

机构：

[1] MPC CSIC UPV EHU, Ctr Fis Mat, Donostia San Sebastian 20018, Spain

[2] Inst for Basic Sci Korea, Ctr Quantum Nanosci, Seoul 03760, South Korea

[3] Ewha Womans Univ, Dept Phys, Seoul 03760, South Korea

[4] Univ Tokyo, Dept Basic Sci, Meguro Ku, Tokyo 1538902, Japan

[5] Tohoku Univ, Grad Sch Sci, Dept Phys, Sendai, Miyagi 9808578, Japan

[6] Donostia Int Phys Ctr, Donostia San Sebastian 20018, Spain

[7] Basque Fdn Sci, Ikerbasque, Bilbao 48013, Spain

来源：

PHYSICAL REVIEW B | 2021年 / 104卷 / 04期

关键词：

SINGLE ATOMS; BOUND-STATES; MOLECULES; IMPURITY; CHAINS;

D O I：

10.1103/PhysRevB.104.045406

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：10

共 53 条

[1] MANIPULATION OF MATTER AT THE ATOMIC AND MOLECULAR-LEVELS [J].

AVOURIS, P .

ACCOUNTS OF CHEMICAL RESEARCH, 1995, 28 (03) :95-102

[2] Spin-orbit coupling induced splitting of Yu-Shiba-Rusinov states in antiferromagnetic dimers [J].

Beck, Philip ;

Schneider, Lucas ;

Rozsa, Levente ;

Palotas, Krisztian ;

Laszloffy, Andras ;

Szunyogh, Laszlo ;

Wiebe, Jens ;

Wiesendanger, Roland .

NATURE COMMUNICATIONS, 2021, 12 (01)

[3] Colloquium: Atomic spin chains on surfaces [J].

Choi, Deung-Jang ;

Lorente, Nicolas ;

Wiebe, Jens ;

von Bergmann, Kirsten ;

Otte, Alexander F. ;

Heinrich, Andreas J. .

REVIEWS OF MODERN PHYSICS, 2019, 91 (04)

[4] Influence of Magnetic Ordering between Cr Adatoms on the Yu-Shiba-Rusinov States of the β-Bi2Pd Superconductor [J].

Choi, Deung-Jang ;

Garcia Fernandez, Carlos ;

Herrera, Edwin ;

Rubio-Verdu, Carmen ;

Ugeda, Miguel M. ;

Guillamon, Isabel ;

Suderow, Hermann ;

Ignacio Pascual, Jose ;

Lorente, Nicolas .

PHYSICAL REVIEW LETTERS, 2018, 120 (16)

[5] Mapping the orbital structure of impurity bound states in a superconductor [J].

Choi, Deung-Jang ;

Rubio-Verdu, Carmen ;

de Bruijckere, Joeri ;

Ugeda, Miguel M. ;

Lorente, Nicolas ;

Ignacio Pascual, Jose .

NATURE COMMUNICATIONS, 2017, 8

[6] Majorana fermions emerging from magnetic nanoparticles on a superconductor without spin-orbit coupling [J].

Choy, T. -P. ;

Edge, J. M. ;

Akhmerov, A. R. ;

Beenakker, C. W. J. .

PHYSICAL REVIEW B, 2011, 84 (19)

[7] Controlling a Chemical Coupling Reaction on a Surface: Tools and Strategies for On-Surface Synthesis [J].

Clair, Sylvain ;

de Oteyza, Dimas G. .

CHEMICAL REVIEWS, 2019, 119 (07) :4717-4776

[8] Spin-Resolved Spectroscopy of the Yu-Shiba-Rusinov States of Individual Atoms [J].

Cornils, L. ;

Kamlapure, A. ;

Zhou, L. ;

Pradhan, S. ;

Khajetoorians, A. A. ;

Fransson, J. ;

Wiebe, J. ;

Wiesendanger, R. .

PHYSICAL REVIEW LETTERS, 2017, 119 (19)

[9] Tuning interactions between spins in a superconductor [J].

Ding, Hao ;

Hu, Yuwen ;

Randeria, Mallika T. ;

Hoffman, Silas ;

Deb, Oindrila ;

Klinovaja, Jelena ;

Loss, Daniel ;

Yazdani, Ali .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2021, 118 (14)

[10] DIRECT MEASUREMENT OF QUASIPARTICLE-LIFETIME BROADENING IN A STRONG-COUPLED SUPERCONDUCTOR [J].

DYNES, RC ;

NARAYANAMURTI, V ;

GARNO, JP .

PHYSICAL REVIEW LETTERS, 1978, 41 (21) :1509-1512

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