Time-resolved imaging of current-induced domain-wall oscillations

被引：45

作者：

Bocklage, Lars ^{[1
,2
]}

Krueger, Benjamin ^{[3
]}

Eiselt, Rene ^{[1
,2
]}

Bolte, Markus ^{[1
,2
]}

Fischer, Peter ^{[4
]}

Meier, Guido ^{[1
,2
]}

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany

[3] Univ Hamburg, Inst Theoret Phys 1, D-20355 Hamburg, Germany

[4] Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.78.180405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Current-induced domain-wall dynamics is investigated via high-resolution soft x-ray transmission microscopy by a stroboscopic pump-and-probe measurement scheme at a temporal resolution of 200 ps. A 180 degrees domain wall in a restoring potential of a permalloy microstructure is displaced from its equilibrium position by nanosecond current pulses leading to oscillations with velocities up to 325 m/s. The motion of the wall is described with an analytical model of a rigid domain wall in a nonharmonic potential allowing one to determine the mass of the domain wall. We show that Oersted fields dominate the domain-wall dynamics in our geometry.

引用

页数：4

共 20 条

[1] Magnetic domain-wall logic [J].

Allwood, DA ;

Xiong, G ;

Faulkner, CC ;

Atkinson, D ;

Petit, D ;

Cowburn, RP .

SCIENCE, 2005, 309 (5741) :1688-1692

[2] Time-resolved x-ray microscopy of spin-torque-induced magnetic vortex gyration [J].

Bolte, Markus ;

Meier, Guido ;

Krueger, Benjamin ;

Drews, Andre ;

Eiselt, Rene ;

Bocklage, Lars ;

Bohlens, Stellan ;

Tyliszczak, Tolek ;

Vansteenkiste, Arne ;

Van Waeyenberge, Bartel ;

Chou, Kang Wei ;

Puzic, Aleksandar ;

Stoll, Hermann .

PHYSICAL REVIEW LETTERS, 2008, 100 (17)

[3] Soft X-ray microscopy at a spatial resolution better than 15nm [J].

Chao, WL ;

Harteneck, BD ;

Liddle, JA ;

Anderson, EH ;

Attwood, DT .

NATURE, 2005, 435 (7046) :1210-1213

[4] SOFT-X-RAY MAGNETIC CIRCULAR-DICHROISM AT THE L2,3 EDGES OF NICKEL [J].

CHEN, CT ;

SETTE, F ;

MA, Y ;

MODESTI, S .

PHYSICAL REVIEW B, 1990, 42 (11) :7262-7265

[5] Vortex core-driven magnetization dynamics [J].

Choe, SB ;

Acremann, Y ;

Scholl, A ;

Bauer, A ;

Doran, A ;

Stöhr, J ;

Padmore, HA .

SCIENCE, 2004, 304 (5669) :420-422

[6] UBER DIE TRAGHEIT DER WANDE ZWISCHEN WEISSSCHEN BEZIRKEN [J].

DORING, W .

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 1948, 3 (07) :373-379

[7]

*EPAPS, EPRBMDO78R19838 EPAP

[8] Current-controlled magnetic domain-wall nanowire shift register [J].

Hayashi, Masamitsu ;

Thomas, Luc ;

Moriya, Rai ;

Rettner, Charles ;

Parkin, Stuart S. P. .

SCIENCE, 2008, 320 (5873) :209-211

[9] Magnetic soft x-ray microscopy at 15 nm resolution probing nanoscale local magnetic hysteresis (invited) [J].

Kim, Dong-Hyun ;

Fischer, Peter ;

Chao, Weilun ;

Anderson, Erik ;

Im, Mi-Young ;

Shin, Sung-Chul ;

Choe, Sug-Bong .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (08)

[10] Current-driven domain-wall dynamics in curved ferromagnetic nanowires [J].

Krueger, Benjamin ;

Pfannkuche, Daniela ;

Bolte, Markus ;

Meier, Guido ;

Merkt, Ulrich .

PHYSICAL REVIEW B, 2007, 75 (05)

← 1 2 →