Thin film MnGe grown on Si(111)

被引：8

作者：

Engelke, J. ^{[1
]}

Menzel, D. ^{[1
]}

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

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Phys Kondensierten Mat, D-38106 Braunschweig, Germany

[2] European Synchrotron Radiat Facil, Swiss Norwegian Beamlines, F-38000 Grenoble, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2013年 / 25卷 / 47期

关键词：

Thin films;

D O I：

10.1088/0953-8984/25/47/472201

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

MnGe has been grown as a thin film on Si(111) substrates by molecular beam epitaxy. A 10 angstrom A layer of MnSi was used as the seed layer in order to establish the B20 crystal structure. Films of a thickness between 45 and 135 angstrom A have been prepared and structurally characterized using reflection high- energy electron diffraction, atomic force microscopy and x- ray diffraction. These studies provided evidence that MnGe forms in the cubic B20 crystal structure as islands exhibit a very smooth surface. The islands become larger with increasing film thickness. A magnetic characterization reveals that the ordering temperature of MnGe thin films is enhanced compared to that for bulk material. The properties of the helical magnetic structure obtained from magnetization and magnetoresistivity measurements are compared with those of films of the related compound MnSi. The much stronger Dzyaloshinskii- Moriya interaction in MnGe results in a higher rigidity of the spin helix.

引用

页数：5

共 15 条

[1] 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)

[2] Spin-Spin Correlation Length in MnSi Thin Films [J].

Engelke, Josefin ;

Reimann, Tommy ;

Hoffmann, Lars ;

Gass, Sebastian ;

Menzel, Dirk ;

Suellow, Stefan .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2012, 81 (12)

[3] Magnetization of epitaxial MnGe alloys on Ge(111) substrates [J].

Gunnella, R ;

Morresi, L ;

Pinto, N ;

Murri, R ;

Ottaviano, L ;

Passacantando, M ;

D'Orazio, F ;

Lucari, F .

SURFACE SCIENCE, 2005, 577 (01) :22-30

[4] Possible skyrmion-lattice ground state in the B20 chiral-lattice magnet MnGe as seen via small-angle neutron scattering [J].

Kanazawa, N. ;

Kim, J. -H. ;

Inosov, D. S. ;

White, J. S. ;

Egetenmeyer, N. ;

Gavilano, J. L. ;

Ishiwata, S. ;

Onose, Y. ;

Arima, T. ;

Keimer, B. ;

Tokura, Y. .

PHYSICAL REVIEW B, 2012, 86 (13)

[5] Large Topological Hall Effect in a Short-Period Helimagnet MnGe [J].

Kanazawa, N. ;

Onose, Y. ;

Arima, T. ;

Okuyama, D. ;

Ohoyama, K. ;

Wakimoto, S. ;

Kakurai, K. ;

Ishiwata, S. ;

Tokura, Y. .

PHYSICAL REVIEW LETTERS, 2011, 106 (15)

[6] 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)

[7] Chiral modulations and reorientation effects in MnSi thin films [J].

Karhu, E. A. ;

Roessler, U. K. ;

Bogdanov, A. N. ;

Kahwaji, S. ;

Kirby, B. J. ;

Fritzsche, H. ;

Robertson, M. D. ;

Majkrzak, C. F. ;

Monchesky, T. L. .

PHYSICAL REVIEW B, 2012, 85 (09)

[8] Robust Formation of Skyrmions and Topological Hall Effect Anomaly in Epitaxial Thin Films of MnSi [J].

Li, Yufan ;

Kanazawa, N. ;

Yu, X. Z. ;

Tsukazaki, A. ;

Kawasaki, M. ;

Ichikawa, M. ;

Jin, X. F. ;

Kagawa, F. ;

Tokura, Y. .

PHYSICAL REVIEW LETTERS, 2013, 110 (11)

[9] Neutron diffraction study of the chiral magnet MnGe [J].

Makarova, O. L. ;

Tsvyashchenko, A. V. ;

Andre, G. ;

Porcher, F. ;

Fomicheva, L. N. ;

Rey, N. ;

Mirebeau, I. .

PHYSICAL REVIEW B, 2012, 85 (20)

[10] Skyrmion Lattice in a Chiral Magnet [J].

Muehlbauer, S. ;

Binz, B. ;

Jonietz, F. ;

Pfleiderer, C. ;

Rosch, A. ;

Neubauer, A. ;

Georgii, R. ;

Boeni, P. .

SCIENCE, 2009, 323 (5916) :915-919

← 1 2 →