Coexistence of antiferromagnetism and superconductivity in Mn/Nb(110)

被引：14
|
作者：
Lo Conte, Roberto [1 ]
Bazarnik, Maciej [1 ,2 ]
Palotas, Krisztian [3 ,4 ,5 ]
Rozsa, Levente [6 ]
Szunyogh, Laszlo [4 ,7 ]
Kubetzka, Andre [1 ]
von Bergmann, Kirsten [1 ]
Wiesendanger, Roland [1 ]
机构：
[1] Univ Hamburg, Dept Phys, D-20355 Hamburg, Germany
[2] Poznan Univ Tech, Inst Phys, Piotrowo 3, PL-60965 Poznan, Poland
[3] Wigner Res Ctr Phys, Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
[4] Budapest Univ Technol & Econ, Inst Phys, Dept Theoret Phys, Muegyet Rkp 3, H-1111 Budapest, Hungary
[5] Univ Szeged, MTA SZTE React Kinet & Surface Chem Res Grp, H-6720 Szeged, Hungary
[6] Univ Konstanz, Dept Phys, D-78457 Constance, Germany
[7] Budapest Univ Technol & Econ, MTA BME Condensed Matter Res Grp, H-1111 Budapest, Hungary
来源：
PHYSICAL REVIEW B | 2022年 / 105卷 / 10期
基金：
欧洲研究理事会;
关键词：
TOTAL-ENERGY CALCULATIONS; BOUND-STATES; SUPERCURRENTS; DRIVEN; SPINS; ATOM;
D O I：
10.1103/PhysRevB.105.L100406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the structural, magnetic, and superconducting properties of single and double atomic layers of Mn on a clean and unreconstructed Nb(110) substrate. Low-temperature scanning tunneling spectroscopy measurements reveal a proximity-induced superconducting state and in-gap Yu-Shiba-Rusinov bands in the Mn thin films, which are found to grow pseudomorphically on the Nb surface. Spin-polarized scanning tunneling microscopy measurements reveal a c(2 x 2) antiferromagnetic (AFM) order in the Mn layers, with an out-of-plane spin orientation. First-principles density functional theory calculations confirm the experimentally observed magnetic state, which is understood as the consequence of a strong intralayer and interlayer nearest-neighbor AFM exchange coupling. These results are expected to be of importance for the design of superconducting AFM spintronic systems and quantum information technologies.
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页数：6
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