Realization of a room-temperature spin dynamo: The spin rectification effect

被引：149

作者：

Gui, Y. S. ^{[1
]}

Mecking, N. ^{[1
]}

Zhou, X. ^{[1
]}

Williams, Gwyn ^{[1
]}

Hu, C. -M. ^{[1
]}

机构：

[1] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 10期

关键词：

Spin dynamics;

D O I：

10.1103/PhysRevLett.98.107602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate a room-temperature spin dynamo where the precession of electron spins in ferromagnets converts energy from microwaves to a bipolar current of electricity. The current/power ratio is at least 3 orders of magnitude larger than that found previously for spin-driven currents in semiconductors. The observed bipolar nature and intriguing symmetry are fully explained by the spin rectification effect via which the nonlinear combination of spin and charge dynamics creates dc currents.

引用

页数：4

共 22 条

[1] Dc effect in ferromagnetic resonance: Evidence of the spin-pumping effect? [J].

Azevedo, A ;

Leao, LHV ;

Rodriguez-Suarez, RL ;

Oliveira, AB ;

Rezende, SM .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)

[2] Spin battery operated by ferromagnetic resonance [J].

Brataas, A ;

Tserkovnyak, Y ;

Bauer, GEW ;

Halperin, BI .

PHYSICAL REVIEW B, 2002, 66 (06) :604041-604044

[3] Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet [J].

Costache, M. V. ;

Sladkov, M. ;

Watts, S. M. ;

van der Wal, C. H. ;

van Wees, B. J. .

PHYSICAL REVIEW LETTERS, 2006, 97 (21)

[4] Large cone angle magnetization precession of an individual nanopatterned ferromagnet with dc electrical detection [J].

Costache, M. V. ;

Watts, S. M. ;

Sladkov, M. ;

van der Wal, C. H. ;

van Wees, B. J. .

APPLIED PHYSICS LETTERS, 2006, 89 (23)

[5] DC DETECTION OF FERROMAGNETIC RESONANCE IN THIN NICKEL FILMS [J].

EGAN, WG ;

JURETSCHKE, HJ .

JOURNAL OF APPLIED PHYSICS, 1963, 34 (05) :1477-&

[6] HALL EFFECT IN PERMALLOYS [J].

FONER, S .

PHYSICAL REVIEW, 1955, 99 (04) :1079-1081

[7] Spin-galvanic effect [J].

Ganichev, SD ;

Ivchenko, EL ;

Bel'kov, VV ;

Tarasenko, SA ;

Sollinger, M ;

Weiss, D ;

Wegscheider, W ;

Prettl, W .

NATURE, 2002, 417 (6885) :153-156

[8] Microwave spectroscopy on magnetization reversal dynamics of nanomagnets with electronic detection [J].

Grollier, J. ;

Costache, M. V. ;

van der Wal, C. H. ;

van Wees, B. J. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (02)

[9] Resonances in ferromagnetic gratings detected by microwave photoconductivity [J].

Gui, YS ;

Holland, S ;

Mecking, N ;

Hu, CM .

PHYSICAL REVIEW LETTERS, 2005, 95 (05)

[10] THz collective spin-flip excitation of a two-dimensional electron system [J].

Hu, CM ;

Zehnder, C ;

Heyn, C ;

Heitmann, D .

PHYSICAL REVIEW B, 2003, 67 (20)

← 1 2 3 →