Coupled Yu-Shiba-Rusinov States in Molecular Dimers on NbSe2

被引：99

作者：

Kezilebieke, Shawulienu ^{[1
]}

Dvorak, Marc ^{[2
,3
]}

Ojanen, Teemu ^{[1
]}

Liljeroth, Peter ^{[1
]}

机构：

[1] Aalto Univ, Sch Sci, Dept Appl Phys, POB 15100, Aalto 00076, Finland

[2] Aalto Univ, Ctr Excellence Computat Nanosci COMP, POB 11100, Aalto 00076, Finland

[3] Aalto Univ, Dept Appl Phys, POB 11100, Aalto 00076, Finland

来源：

NANO LETTERS | 2018年 / 18卷 / 04期

基金：

欧洲研究理事会; 芬兰科学院;

关键词：

Magnetic molecules; superconductivity; Yu-Shiba-Rusinov states; scanning tunneling microscopy; cobalt phthalocyanine; niobium diselenide (NbSe2); SCANNING TUNNELING MICROSCOPE; MAGNETIC-IMPURITIES; BOUND-STATES; SUPERCONDUCTOR; ATOMS;

D O I：

10.1021/acs.nanolett.7b05050

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Magnetic impurities have a dramatic effect on superconductivity by breaking the time-reversal symmetry and inducing so-called Yu-Shiba-Rusinov (YSR) low energy bound states within the superconducting gap. The spatial extent of YSR states is greatly enhanced in two-dimensional (2D) systems, which should facilitate the formation of coupled states. Here, we observe YSR states on single cobalt phthalocyanine (CoPC) molecules on a 2D superconductor NbSe2 using low-temperature scanning tunneling microscopy (STM) and spectroscopy. We use STM lateral manipulation to create controlled CoPc dimers and demonstrate the formation of coupled YSR states. The experimental results are corroborated by theoretical analysis of the coupled states in lattice and continuum models.

引用

页码：2311 / 2315

页数：5

共 38 条

[1] Impurity-induced states in conventional and unconventional superconductors [J].

Balatsky, A. V. ;

Vekhter, I. ;

Zhu, Jian-Xin .

REVIEWS OF MODERN PHYSICS, 2006, 78 (02) :373-433

[2]

Bartolome J, 2014, NANOSCI TECHNOL, P1, DOI 10.1007/978-3-642-40609-6

[3] 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)

[4] POSITIONING SINGLE ATOMS WITH A SCANNING TUNNELING MICROSCOPE [J].

EIGLER, DM ;

SCHWEIZER, EK .

NATURE, 1990, 344 (6266) :524-526

[5] Local spectrum of a superconductor as a probe of interactions between magnetic impurities [J].

Flatté, ME ;

Reynolds, DE .

PHYSICAL REVIEW B, 2000, 61 (21) :14810-14814

[6] Local electronic structure of a single magnetic impurity in a superconductor [J].

Flatte, ME ;

Byers, JM .

PHYSICAL REVIEW LETTERS, 1997, 78 (19) :3761-3764

[7] Competition of Superconducting Phenomena and Kondo Screening at the Nanoscale [J].

Franke, K. J. ;

Schulze, G. ;

Pascual, J. I. .

SCIENCE, 2011, 332 (6032) :940-944

[8] Vibrational Andreev bound states in magnetic molecules [J].

Golez, Denis ;

Bonca, Janez ;

Zitko, Rok .

PHYSICAL REVIEW B, 2012, 86 (08)

[9]

Haldar S, 2017, ARXIV170904540

[10] Magnetic anisotropy in Shiba bound states across a quantum phase transition [J].

Hatter, Nino ;

Heinrich, Benjamin W. ;

Ruby, Michael ;

Pascual, Jose I. ;

Franke, Katharina J. .

NATURE COMMUNICATIONS, 2015, 6

← 1 2 3 4 →