Long-term potentiation of magnonic synapses by photocontrolled spin current mimicked in reentrant spin-glass garnet ferrite Lu3Fe5-2xCoxSixO12 thin films

被引：7

作者：

Adachi, Masaki ^{[1
]}

Seki, Munetoshi ^{[1
]}

Yamahara, Hiroyasu ^{[1
]}

Nasu, Hidekazu ^{[1
]}

Tabata, Hitoshi ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Engn, Dept Elect Engn & Informat Syst, Bunkyo Ku, Tokyo 1138656, Japan

来源：

APPLIED PHYSICS EXPRESS | 2015年 / 8卷 / 04期

关键词：

YTTRIUM-IRON-GARNET; STATE;

D O I：

10.7567/APEX.8.043002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

(Co, Si)-cosubstituted Lu3Fe5O12 (Lu3Fe5-2xCoxSixO12; 0.00 <= x <= 1.00) thin films were grown on Y3Al5O12(001) substrates by pulsed laser deposition. Reentrant spin-glass behavior was observed and its robustness against external magnetic fields was improved by increasing the Co-Si content. In contrast, the spectral linewidth of ferromagnetic resonance was broadened by increasing the Co-Si content, which indicates that the Lu3Fe4.8Co0.1Si0.1O12 thin film is an optimal spin-glass spin-wave conductor. The spin pumping voltage of Lu3Fe4.8Co0.1Si0.1O12 exhibited shortterm plasticity with photoinduced magnetic anisotropy and long-term potentiation with the photomemory effect, which mimicked the pre- and postsynaptic potentials of biological systems. (C) 2015 The Japan Society of Applied Physics

引用

页数：4

共 19 条

[1] Re-entrant spin glass and magnetoresistance in Co0.2Zn0.8Fe1.6Ti0.4O4 spinel oxide [J].

Bhowmik, RN ;

Ranganathan, R .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (05) :2780-2788

[2] Nonadiabatic Stochastic Resonance of a Nanomagnet Excited by Spin Torque [J].

Cheng, Xiao ;

Boone, Carl T. ;

Zhu, Jian ;

Krivorotov, Ilya N. .

PHYSICAL REVIEW LETTERS, 2010, 105 (04)

[3]

GELLER S, 1964, PHYS REV A-GEN PHYS, V136, P1650

[4] NEURAL NETWORKS AND PHYSICAL SYSTEMS WITH EMERGENT COLLECTIVE COMPUTATIONAL ABILITIES [J].

HOPFIELD, JJ .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES, 1982, 79 (08) :2554-2558

[5] Multi-frequency magnonic logic circuits for parallel data processing [J].

Khitun, Alexander .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (05)

[6] Ferromagnetic resonance and damping properties of CoFeB thin films as free layers in MgO-based magnetic tunnel junctions [J].

Liu, Xiaoyong ;

Zhang, Wenzhe ;

Carter, Matthew J. ;

Xiao, Gang .

JOURNAL OF APPLIED PHYSICS, 2011, 110 (03)

[7] PHOTOMAGNETIC EFFECTS AND DISACCOMMODATION IN CO-DOPED YIG [J].

LOTGERING, FK .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1975, 36 (11) :1183-1191

[8] Effects of light-irradiation on spin-glass state and magnetoresistive properties of Zn0.5Co0.5Fe2O4 spinel ferrite films [J].

Muraoka, Y ;

Tabata, H ;

Kawai, T .

SOLID STATE COMMUNICATIONS, 2001, 120 (5-6) :255-258

[9] WAVELENGTH DEPENDENCE OF PHOTOMAGNETIC EFFECT IN CO-DOPED MAGNETIC GARNET-FILMS [J].

OHMORI, K ;

NAKAGAWA, K ;

ITOH, A .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (02) :775-777

[10]

Ohno T, 2011, NAT MATER, V10, P591, DOI [10.1038/NMAT3054, 10.1038/nmat3054]

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