Changing the Interaction of a Single-Molecule Magnetic Moment with a Superconductor

被引：4

作者：

Schulte, Stefan ^{[1
,2
,3
]}

Neel, Nicolas ^{[1
]}

Rozsa, Levente ^{[4
]}

Palotas, Krisztian ^{[5
,6
,7
]}

Kroeger, Joerg ^{[1
]}

机构：

[1] Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany

[2] Forschungszentrum Julich, Peter Grunberg Inst, D-52425 Julich, Germany

[3] Univ Cologne, Phys Inst 2, D-50923 Cologne, Germany

[4] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

[5] Wigner Res Ctr Phys, Inst Solid State Phys & Opt, Dept Theoret Solid State Phys, H-1121 Budapest, Hungary

[6] Univ Szeged, ELKH SZTE React Kinet & Surface Chem Res Grp, H-6720 Szeged, Hungary

[7] Budapest Univ Technol & Econ, Inst Phys, Dept Theoret Phys, H-1111 Budapest, Hungary

来源：

NANO LETTERS | 2023年 / 23卷 / 04期

关键词：

Scanning tunneling microscopy and spectroscopy; Yu-Shiba-Rusinov bound state; single-molecule chemical reaction; magnetic exchange interaction; superconductivity; density functional theory; TOTAL-ENERGY CALCULATIONS; STATES; ATOM; IMPURITIES;

D O I：

10.1021/acs.nanolett.2c03952

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The exchange interaction of a brominated Co-porphyrin molecule with the Cooper pair condensate of Pb(111) is modified by reducing the Co-surface separation. The stepwise dehalogenation and dephenylation change the Co adsorption height by a few picometers. Only the residual Co-porphine core exhibits a Yu-Shiba-Rusinov bound state with low binding energy in the Bardeen-Cooper-Schrieffer energy gap. Accompanying density functional calculations reveal that the Co dZ2 orbital carries the molecular magnetic moment and is responsible for the intragap state. The calculated spatial evolution of the Yu-Shiba-Rusinov wave function is compatible with the experimentally observed oscillatory attenuation of the electron-hole asymmetry with increasing lateral distance from the magnetic porphine center.

引用

页码：1622 / 1628

页数：7

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