CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Unusual Anomalous Hall Effect in a Co$_{2}$MnSi/MnGa/Pt Trilayer |
Shan Li1,2, Jun Lu1,3*, Lian-Jun Wen1,2, Dong Pan1,2, Hai-Long Wang1,2, Da-Hai Wei1,2,3, and Jian-Hua Zhao1,2,3 |
1State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China 2Center of Materials Science and Optoelectronics Engineering & CAS Center of Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China 3Beijing Academy of Quantum Information Science, Beijing 100193, China
|
|
Cite this article: |
Shan Li, Jun Lu, Lian-Jun Wen et al 2020 Chin. Phys. Lett. 37 077303 |
|
|
Abstract An ultra-thin Co$_{2}$MnSi(0.5 nm)/MnGa(1.5 nm) bilayer capped with Pt (5 nm) has been successfully grown by molecular-beam epitaxy. It is a potential candidate of synthetic antiferromagnets due to antiferromagnetic coupling between Co$_{2}$MnSi and MnGa, which is a promising skyrmion-racetrack-memory medium without skyrmion Hall effect after capping with a Pt layer. Unusual humps in transverse Hall resistance loops are clearly observed in the temperature range from 260 to 400 K. This anomaly is generally attributed to topological Hall effect, but other than that, we prove that non-uniform rotation of magnetic moments in the bilayer with magnetic field sweeping is also a possible mechanism contributed to the unusual hump.
|
|
Received: 03 March 2020
Published: 21 June 2020
|
|
PACS: |
73.50.Jt
|
(Galvanomagnetic and other magnetotransport effects)
|
|
75.70.Ak
|
(Magnetic properties of monolayers and thin films)
|
|
81.15.Hi
|
(Molecular, atomic, ion, and chemical beam epitaxy)
|
|
|
Fund: Supported by the National Program on Key Basic Research Project under Grant No. 2018YFB0407601, the Strategic Priority Research Program of the Chinese Academy of Sciences under Grant Nos. XDB44000000 and QYZDY-SSW-JSC015, and the National Natural Science Foundation of China under Grant Nos. 11874349 and 11774339. |
|
|
[1] | Nagaosa N and Tokura Y 2013 Nat. Nanotechnol. 8 899 |
[2] | Liu Y H and Li Y Q 2015 Chin. Phys. B 24 017506 |
[3] | Bazeia D, Ramos J G G S and Rodrigues E I B 2017 J. Magn. Magn. Mater. 423 411 |
[4] | Jiang W, Chen G, Liu K, Zang J, te Velthuis S G E and Hoffmann A 2017 Phys. Rep. 704 1 |
[5] | Ding B and Wang W H 2018 Physics 47 15 (in Chinese) |
[6] | Fert A, Cros V and Sampaio J 2013 Nat. Nanotechnol. 8 152 |
[7] | Finocchio G, Büttner F, Tomasello R, Carpentieri M and Kläui M 2016 J. Phys. D 49 423001 |
[8] | Wiesendanger R 2016 Nat. Rev. Mater. 1 16044 |
[9] | Zhang X, Zhou Y, Mee Song K, Park T E, Xia J, Ezawa M, Liu X, Zhao W, Zhao G and Woo S 2020 J. Phys.: Condens. Matter 32 143001 |
[10] | Jiang W, Upadhyaya P, Zhang W, Yu G, Jungfleisch M B, Fradin F Y, Pearson J E, Tserkovnyak Y, Wang K L, Heinonen O, te Velthuis S G E and Hoffmann A 2015 Science 349 283 |
[11] | Zang J, Mostovoy M, Han J H and Nagaosa N 2011 Phys. Rev. Lett. 107 136804 |
[12] | Tomasello R, Martinez E, Zivieri R, Torres L, Carpentieri M and Finocchio G 2015 Sci. Rep. 4 6784 |
[13] | Jiang W, Zhang X, Yu G, Zhang W, Wang X, Benjamin Jungfleisch M, Pearson John E, Cheng X, Heinonen O, Wang K L, Zhou Y, Hoffmann A and te Velthuis Suzanne G E 2017 Nat. Phys. 13 162 |
[14] | Litzius K, Lemesh I, Krüger B, Bassirian P, Caretta L, Richter K, Büttner F, Sato K, Tretiakov O A, Förster J, Reeve R M, Weigand M, Bykova I, Stoll H, Schütz G, Beach G S D and Kläui M 2017 Nat. Phys. 13 170 |
[15] | Zhang X, Zhou Y and Ezawa M 2016 Nat. Commun. 7 10293 |
[16] | Dohi T, DuttaGupta S, Fukami S and Ohno H 2019 Nat. Commun. 10 5153 |
[17] | Legrand W, Maccariello D, Ajejas F, Collin S, Vecchiola A, Bouzehouane K, Reyren N, Cros V and Fert A 2020 Nat. Mater. 19 34 |
[18] | Taguchi Y, Oohara Y, Yoshizawa H, Nagaosa N and Tokura Y 2001 Science 291 2573 |
[19] | Schulz T, Ritz R, Bauer A, Halder M, Wagner M, Franz C, Pfleiderer C, Everschor K, Garst M and Rosch A 2012 Nat. Phys. 8 301 |
[20] | Yu G, Jenkins A, Ma X, Razavi S A, He C, Yin G, Shao Q, He Q L, Wu H, Li W, Jiang W, Han X, Li X, Bleszynski Jayich A C, Amiri P K and Wang K L 2018 Nano Lett. 18 980 |
[21] | Tolley R, Montoya S A and Fullerton E E 2018 Phys. Rev. Mater. 2 044404 |
[22] | Hou Z, Zhang Q, Xu G, Gong C, Ding B, Wang Y, Li H, Liu E, Xu F, Zhang H, Yao Y, Wu G, Zhang X X and Wang W 2018 Nano Lett. 18 1274 |
[23] | Raju M, Yagil A, Soumyanarayanan A, Tan A K C, Almoalem A, Ma F, Auslaender O M and Panagopoulos C 2019 Nat. Commun. 10 696 |
[24] | Lee M, Kang W, Onose Y, Tokura Y and Ong N P 2009 Phys. Rev. Lett. 102 186601 |
[25] | Neubauer A, Pfleiderer C, Binz B, Rosch A, Ritz R, Niklowitz P G and Boni P 2009 Phys. Rev. Lett. 102 186602 |
[26] | Kanazawa N, Onose Y, Arima T, Okuyama D, Ohoyama K, Wakimoto S, Kakurai K, Ishiwata S and Tokura Y 2011 Phys. Rev. Lett. 106 156603 |
[27] | Huang S X and Chien C L 2012 Phys. Rev. Lett. 108 267201 |
[28] | Li Y, Kanazawa N, Yu X Z, Tsukazaki A, Kawasaki M, Ichikawa M, Jin X F, Kagawa F and Tokura Y 2013 Phys. Rev. Lett. 110 117202 |
[29] | Dzyaloshinsky I 1958 J. Phys. Chem. Solids 4 241 |
[30] | Moriya T 1960 Phys. Rev. 120 91 |
[31] | Soumyanarayanan A, Raju M, Gonzalez Oyarce A L, Tan A K C, Im M Y, Petrovic A P, Ho P, Khoo K H, Tran M, Gan C K, Ernult F and Panagopoulos C 2017 Nat. Mater. 16 898 |
[32] | Meng K Y, Ahmed A S, Baćani M, Mandru A O, Zhao X, Bagués N, Esser B D, Flores J, McComb D W, Hug H J and Yang F 2019 Nano Lett. 19 3169 |
[33] | Meng K K, Zhu L J, Jin Z H, Liu E K, Zhao X P, Malik I A, Fu Z G, Wu Y, Miao J, Xu X G, Zhang J X, Zhao J H and Jiang Y 2019 Phys. Rev. B 100 184410 |
[34] | Ranjbar R, Suzuki K, Sugihara A, Miyazaki T, Ando Y and Mizukami S 2015 Mater. (Basel) 8 6531 |
[35] | Lu J, Mao S W, Zhao X P, Wang X L, Liu J, Xia J B, Xiong P and Zhao J H 2017 Sci. Rep. 7 16990 |
[36] | Mao S W, Lu J, Zhao X P, Wang X L, Wei D H, Liu J, Xia J B and Zhao J H 2017 Sci. Rep. 7 43064 |
[37] | Matsuno J, Ogawa N, Yasuda K, Kagawa F, Koshibae W, Nagaosa N, Tokura Y and Kawasaki M 2016 Sci. Adv. 2 e1600304 |
[38] | Meng K K, Zhao X P, Liu P F, Liu Q, Wu Y, Li Z P, Chen J K, Miao J, Xu X G, Zhao J H and Jiang Y 2018 Phys. Rev. B 97 060407 |
[39] | Kan D, Moriyama T, Kobayashi K and Shimakawa Y 2018 Phys. Rev. B 98 180408(R) |
[40] | Gerber A 2018 Phys. Rev. B 98 214440 |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|