Helical magnetic order in MnSi thin films

被引：51

作者：

Karhu, E. A. ^{[1
]}

Kahwaji, S. ^{[1
]}

Robertson, M. D. ^{[2
]}

Fritzsche, H. ^{[3
]}

Kirby, B. J. ^{[4
]}

Majkrzak, C. F. ^{[4
]}

Monchesky, T. L. ^{[1
]}

机构：

[1] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 3J5, Canada

[2] Acadia Univ, Dept Phys, Wolfville, NS B4P 2R6, Canada

[3] Natl Res Council Canada, Canadian Neutron Beam Ctr, Chalk River, ON K0J 1J0, Canada

[4] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

PHASE;

D O I：

10.1103/PhysRevB.84.060404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a study of the magnetic structure of crystalline MnSi(111) thin films grown by molecular beam epitaxy. A combination of polarized neutron reflectometry (PNR) and superconducting quantum interference device magnetometry show that the films have helical magnetic order with a pitch vector Q along the film normal. The helix wavelength of 2 pi/Q = 13.9 +/- 0.1 nm is found to be independent of thickness below 40 nm. PNR shows that the magnetic structure has both left-handed and right-handed chiralities due to the presence of inversion domains observed by transmission electron microscopy.

引用

页数：4

共 19 条

[1] THEORY OF HELICAL MAGNETIC-STRUCTURES AND PHASE-TRANSITIONS IN MNSI AND FEGE [J].

BAK, P ;

JENSEN, MH .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1980, 13 (31) :L881-L885

[2] Stabilization of skyrmion textures by uniaxial distortions in noncentrosymmetric cubic helimagnets [J].

Butenko, A. B. ;

Leonov, A. A. ;

Roessler, U. K. ;

Bogdanov, A. N. .

PHYSICAL REVIEW B, 2010, 82 (05)

[3] Pressure dependence of the magnetic structure of the itinerant electron magnet MnSi [J].

Fåk, B ;

Sadykov, RA ;

Flouquet, J ;

Lapertot, G .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (10) :1635-1644

[4] Imprinting magnetic structures [J].

Felcher, GP ;

Lohstroh, W ;

Fritzsche, H ;

Munzenberg, M ;

Maletta, H ;

Felsch, W .

APPLIED PHYSICS LETTERS, 1998, 72 (22) :2894-2896

[5] Helical spin structure of Mn1-yFeySi under a magnetic field: Small angle neutron diffraction study [J].

Grigoriev, S. V. ;

Dyadkin, V. A. ;

Moskvin, E. V. ;

Lamago, D. ;

Wolf, Th. ;

Eckerlebe, H. ;

Maleyev, S. V. .

PHYSICAL REVIEW B, 2009, 79 (14)

[6] Persistent spin currents in helimagnets -: art. no. 064406 [J].

Heurich, J ;

König, J ;

MacDonald, AH .

PHYSICAL REVIEW B, 2003, 68 (06)

[7] Epitaxially grown flat MnSi ultrathin film on Si(111) [J].

Higashi, Shougo ;

Ikedo, Yuichi ;

Kocan, Pavel ;

Tochihara, Hiroshi .

APPLIED PHYSICS LETTERS, 2008, 93 (01)

[8] MAGNETIC PHASE-DIAGRAM OF MNSI NEAR CRITICAL-TEMPERATURE STUDIED BY NEUTRON SMALL-ANGLE SCATTERING [J].

ISHIKAWA, Y ;

ARAI, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1984, 53 (08) :2726-2733

[9] Spin Transfer Torques in MnSi at Ultralow Current Densities [J].

Jonietz, F. ;

Muehlbauer, S. ;

Pfleiderer, C. ;

Neubauer, A. ;

Muenzer, W. ;

Bauer, A. ;

Adams, T. ;

Georgii, R. ;

Boeni, P. ;

Duine, R. A. ;

Everschor, K. ;

Garst, M. ;

Rosch, A. .

SCIENCE, 2010, 330 (6011) :1648-1651

[10] Structure and magnetic properties of MnSi epitaxial thin films [J].

Karhu, E. ;

Kahwaji, S. ;

Monchesky, T. L. ;

Parsons, C. ;

Robertson, M. D. ;

Maunders, C. .

PHYSICAL REVIEW B, 2010, 82 (18)

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