Magnon-fluxon interaction in a ferromagnet/superconductor heterostructure

被引：103

作者：

Dobrovolskiy, O. V. ^{[1
,2
]}

Sachser, R. ^{[1
]}

Braecher, T. ^{[3
,4
]}

Boettcher, T. ^{[3
,4
,5
]}

Kruglyak, V. V. ^{[6
]}

Vovk, R. V. ^{[2
]}

Shklovskij, V. A. ^{[2
]}

Huth, M. ^{[1
]}

Hillebrands, B. ^{[3
,4
]}

Chumak, A. V. ^{[3
,4
]}

机构：

[1] Goethe Univ Frankfurt Main, Inst Phys, Frankfurt, Germany

[2] V Karazin Natl Univ, Dept Phys, Kharkov, Ukraine

[3] Tech Univ Kaiserslautern, Fachbereich Phys, Kaiserslautern, Germany

[4] Tech Univ Kaiserslautern, Landesforschungszentrum OPTIMAS, Kaiserslautern, Germany

[5] Johannes Gutenberg Univ Mainz, Mat Sci Mainz MAINZ, Mainz, Germany

[6] Univ Exeter, Sch Phys & Astron, Exeter, Devon, England

来源：

NATURE PHYSICS | 2019年 / 15卷 / 05期

基金：

欧洲研究理事会;

关键词：

ROOM-TEMPERATURE; SPIN; SUPERCONDUCTORS;

D O I：

10.1038/s41567-019-0428-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ferromagnetism and superconductivity are most fundamental phenomena in condensed-matter physics. Entailing opposite spin orders, they share an important conceptual similarity: disturbances in magnetic ordering in magnetic materials can propagate in the form of spin waves (magnons) while magnetic fields penetrate superconductors as a lattice of magnetic flux quanta (fluxons). Despite a rich choice of wave and quantum phenomena predicted, magnon-fluxon coupling has not been observed experimentally so far. Here, we clearly evidence the interaction of spin waves with a flux lattice in ferromagnet/superconductor Py/Nb bilayers. We demonstrate that, in this system, the magnon frequency spectrum exhibits a Bloch-like band structure that can be tuned by the biasing magnetic field. Furthermore, we observe Doppler shifts in the frequency spectra of spin waves scattered on a flux lattice moving under the action of a transport current in the superconductor.

引用

页码：477 / +

页数：7

共 44 条

[11] Magnonic crystals for data processing [J].

Chumak, A. V. ;

Serga, A. A. ;

Hillebrands, B. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2017, 50 (24)

[12]

Chumak AV, 2015, NAT PHYS, V11, P453, DOI [10.1038/nphys3347, 10.1038/NPHYS3347]

[13] Reverse Doppler effect of magnons with negative group velocity scattered from a moving Bragg grating [J].

Chumak, A. V. ;

Dhagat, P. ;

Jander, A. ;

Serga, A. A. ;

Hillebrands, B. .

PHYSICAL REVIEW B, 2010, 81 (14)

[14] Bose-Einstein condensation of quasi-equilibrium magnons at room temperature under pumping [J].

Demokritov, S. O. ;

Demidov, V. E. ;

Dzyapko, O. ;

Melkov, G. A. ;

Serga, A. A. ;

Hillebrands, B. ;

Slavin, A. N. .

NATURE, 2006, 443 (7110) :430-433

[15] Asymmetric spin-wave dispersion due to Dzyaloshinskii-Moriya interaction in an ultrathin Pt/CoFeB film [J].

Di, Kai ;

Zhang, Vanessa Li ;

Lim, Hock Siah ;

Ng, Ser Choon ;

Kuok, Meng Hau ;

Qiu, Xuepeng ;

Yang, Hyunsoo .

APPLIED PHYSICS LETTERS, 2015, 106 (05)

[16] Mobile fluxons as coherent probes of periodic pinning in superconductors [J].

Dobrovolskiy, Oleksandr V. ;

Huth, Michael ;

Shklovskij, Valerij A. ;

Vovk, Ruslan V. .

SCIENTIFIC REPORTS, 2017, 7

[17] Abrikosov fluxonics in washboard nanolandscapes [J].

Dobrovolskiy, Oleksandr V. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2017, 533 :80-90

[18] Crossover from dirty to clean superconducting limit in dc magnetron-sputtered thin Nb films [J].

Dobrovolskiy, Oleksandr V. ;

Huth, Michael .

THIN SOLID FILMS, 2012, 520 (18) :5985-5990

[19] Ferromagnet/Superconductor Hybridization for Magnonic Applications [J].

Golovchanskiy, Igor A. ;

Abramov, Nikolay N. ;

Stolyarov, Vasily S. ;

Bolginov, Vitaly V. ;

Ryazanov, Valery V. ;

Golubov, Alexander A. ;

Ustinov, Alexey V. .

ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (33)

[20] LIGHT-SCATTERING FROM MAGNETIC SURFACE EXCITATIONS [J].

GRUNBERG, PA .

PROGRESS IN SURFACE SCIENCE, 1985, 18 (01) :1-58

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