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NTIS 바로가기Scientific reports, v.9, 2019년, pp.1085 -
Husain, Sajid (Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi, 110016 India) , Sisodia, Naveen (Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi, 110016 India) , Chaurasiya, Avinash Kumar (Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block –) , Kumar, Ankit (JD, Sector –) , Singh, Jitendra Pal (III, Salt Lake, Kolkata, 700106 India) , Yadav, Brajesh S. (Department of Engineering Sciences, Uppsala University, SE-75121 Uppsala, Sweden) , Akansel, Serkan (Advanced Analysis Center, Korea Institute of Science and Technology, Seoul, 02792 Republic of Korea) , Chae, Keun Hwa (Solid State Physics Laboratory, Lucknow Road, Timarpur, Delhi, 110054 India) , Barman, Anjan (Department of Engineering Sciences, Uppsala University, SE-75121 Uppsala, Sweden) , Muduli, P. K. (Advanced Analysis Center, Korea Institute of Science and Technology, Seoul, 02792 Republic of Korea) , Svedlindh, Peter (Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block –) , Chaudhary, Sujeet (JD, Sector –)
Magnetic skyrmions are topological spin-textures having immense potential for energy efficient spintronic devices. Here, we report the observation of stable skyrmions in unpatterned Ta/Co2FeAl(CFA)/MgO thin film heterostructures at room temperature in remnant state employing magnetic force microscop...
1. Mühlbauer S Skyrmion lattice in a chiral magnet Science 2009 323 915 919 10.1126/science.1166767 19213914
2. Nagaosa N Tokura Y Topological properties and dynamics of magnetic skyrmions Nat. Nanotechnol. 2013 8 899 911 10.1038/nnano.2013.243 24302027
3. Sampaio J Cros V Rohart S Thiaville A Fert A Nucleation, stability and current-induced motion of isolated magnetic skyrmions in nanostructures Nat. Nanotechnol. 2013 8 839 44 10.1038/nnano.2013.210 24162000
4. Kravchuk VP Topologically stable magnetization states on a spherical shell: Curvature-stabilized skyrmions Phys. Rev. B 2016 94 144402 10.1103/PhysRevB.94.144402
5. Hanneken C Electrical detection of magnetic skyrmions by non-collinear magnetoresistance Nat. Nanotechnol. 2015 10 1039 1043 10.1038/nnano.2015.218 26436563
6. Siracusano G Magnetic Radial Vortex Stabilization and Efficient Manipulation Driven by the Dzyaloshinskii-Moriya Interaction and Spin-Transfer Torque Phys. Rev. Lett. 2016 117 087204 10.1103/PhysRevLett.117.087204 27588879
7. Woo S Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets Nat. Mater. 2016 15 501 506 10.1038/nmat4593 26928640
8. Zhang X Skyrmions in Magnetic Tunnel Junctions ACS Appl. Mater. Interfaces 2018 10 16887 16892 10.1021/acsami.8b03812 29682962
9. Pribiag VS Magnetic vortex oscillator driven by d.c. spin-polarized current Nat. Phys. 2007 3 498 503 10.1038/nphys619
10. Cowburn RP Spintronics: Change of direction Nat. Mater. 2007 6 255 256 10.1038/nmat1877 17401414
11. Mistral Q Current-driven vortex oscillations in metallic nanocontacts Phys. Rev. Lett. 2008 100 257201 10.1103/PhysRevLett.100.257201 18643697
12. Kim SK Lee KS Yu YS Choi YS Reliable low-power control of ultrafast vortex-core switching with the selectivity in an array of vortex states by in-plane circular-rotational magnetic fields and spin-polarized currents Appl. Phys. Lett. 2008 92 022509 10.1063/1.2807274
13. Im M-Y Symmetry breaking in the formation of magnetic vortex states in a permalloy nanodisk Nat. Commun. 2012 3 983 10.1038/ncomms1978 22864576
14. Moutafis C Magnetic bubbles in FePt nanodots with perpendicular anisotropy Phys. Rev. B 2007 76 104426 10.1103/PhysRevB.76.104426
15. Moutafis CKS Vaz CAF Bland JAC Eames P Vortices in ferromagnetic elements with perpendicular anisotropy Phys. Rev. B 2006 74 214406 10.1103/PhysRevB.74.214406
16. Yu X Tokunaga Y Taguchi Y Tokura Y Variation of Topology in Magnetic Bubbles in a Colossal Magnetoresistive Manganite Adv. Mater. 2017 29 1603958 10.1002/adma.201603958
17. Yu XZ Real-space observation of a two-dimensional skyrmion crystal Nature 2010 465 901 904 10.1038/nature09124 20559382
18. Jamet M High-Curie-temperature ferromagnetism in self-organized Ge 1−x Mn x nanocolumns Nat. Mater. 2006 5 653 659 10.1038/nmat1686 16845420
19. Zheng F Direct imaging of a zero-field target skyrmion and its polarity switch in a chiral magnetic nanodisk Phys. Rev. Lett. 2017 119 197205 10.1103/PhysRevLett.119.197205 29219505
20. Kumar A Temperature-dependent Gilbert damping of Co 2 FeAl thin films with different degree of atomic order Phys. Rev. B 2017 96 224425 10.1103/PhysRevB.96.224425
21. Dzyaloshinsky I A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics J. Phys. Chem. Solids 1958 4 241 255 10.1016/0022-3697(58)90076-3
22. Moriya T Anisotropic superexchange interaction and weak ferromagnetism Phys. Rev. 1960 120 91 98 10.1103/PhysRev.120.91
23. Fert A Levy PM Role of anisotropic exchange interactions in determining the properties of spin-glasses Phys. Rev. Lett. 1980 44 1538 1541 10.1103/PhysRevLett.44.1538
24. Bogdanov A Rößler U Chiral Symmetry Breaking in Magnetic Thin Films and Multilayers Phys. Rev. Lett. 2001 87 037203 10.1103/PhysRevLett.87.037203 11461587
25. Boulle O Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures Nat. Nanotechnol. 2016 11 449 455 10.1038/nnano.2015.315 26809057
26. Pollard SD Observation of stable Néel skyrmions in Co/Pd multilayers with Lorentz transmission electron microscopy Nat. Commun. 2017 8 14761 10.1038/ncomms14761 28281542
27. Büttner F Dynamics and inertia of skyrmionic spin structures Nat. Phys. 2015 11 225 228 10.1038/nphys3234
28. Park HS Observation of the magnetic flux and three-dimensional structure of skyrmion lattices by electron holography Nat. Nanotechnol. 2014 9 337 342 10.1038/nnano.2014.52 24727689
29. Romming N Kubetzka A Hanneken C Von Bergmann K Wiesendanger R Field-Dependent Size and Shape of Single Magnetic Skyrmions Phys. Rev. Lett. 2015 114 177203 10.1103/PhysRevLett.114.177203 25978258
30. Hou, Z. et al . Creation of Single Chain of Nanoscale Skyrmion Bubbles with Record-high Temperature Stability in a Geometrically Confined Nanostripe. Nano Lett . acs.nanolett.7b04900, 10.1021/acs.nanolett.7b04900 (2018).
31. Yu XZ Skyrmion flow near room temperature in an ultralow current density Nat. Commun. 2012 3 988 10.1038/ncomms1990 22871807
32. Everschor K Garst M Duine RA Rosch A Current-induced rotational torques in the skyrmion lattice phase of chiral magnets Phys. Rev. B 2011 84 064401 10.1103/PhysRevB.84.064401
33. Iwasaki J Mochizuki M Nagaosa N Current-induced skyrmion dynamics in constricted geometries Nat. Nanotechnol. 2013 8 742 10.1038/nnano.2013.176 24013132
34. Husain S Akansel S Kumar A Svedlindh P Chaudhary S Growth of Co 2 FeAl Heusler alloy thin films on Si(100) having very small Gilbert damping by Ion beam sputtering Sci. Rep. 2016 6 28692 10.1038/srep28692 27357004
35. Zhou Y Dynamically stabilized magnetic skyrmions Nat. Commun. 2015 6 8193 10.1038/ncomms9193 26351104
36. Emori S Bauer U Ahn S-M Martinez E Beach GSD Current-driven dynamics of chiral ferromagnetic domain walls Nat. Mater. 2013 12 611 6 10.1038/nmat3675 23770726
37. Cho J Thickness dependence of the interfacial Dzyaloshinskii–Moriya interaction in inversion symmetry broken systems Nat. Commun. 2015 6 7635 10.1038/ncomms8635 26154986
38. Rohart S Thiaville A Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction Phys. Rev. B 2013 88 184422 10.1103/PhysRevB.88.184422
39. Hrabec A Current-induced skyrmion generation and dynamics in symmetric bilayers Nat. Commun. 2017 8 15765 10.1038/ncomms15765 28593949
40. Gallagher JC Robust Zero-Field Skyrmion Formation in FeGe Epitaxial Thin Films Phys. Rev. Lett. 2017 118 0207201 10.1103/PhysRevLett.118.027201
41. Li J Tailoring the topology of an artificial magnetic skyrmion Nat. Commun. 2014 5 4704 10.1038/ncomms5704 25134845
42. Gilbert DA Realization of ground-state artificial skyrmion lattices at room temperature Nat. Commun. 2015 6 8462 10.1038/ncomms9462 26446515
43. Karthik SV Rajanikanth A Takahashi YK Okhubo T Hono K Spin polarization of quaternary Co2Cr1-xFexAl Heusler alloys Appl. Phys. Lett. 2006 89 052505 10.1063/1.2245224
44. Husain S Spin pumping in ion-beam sputtered Co 2 FeAl/Mo bilayers: Interfacial Gilbert damping Phys. Rev. B 2018 97 064420 10.1103/PhysRevB.97.064420
45. Akansel S Thickness-dependent enhancement of damping in Co 2 FeAl/β-Ta thin films Phys. Rev. B 2018 97 134421 10.1103/PhysRevB.97.134421
46. Milde P Unwinding of a Skyrmion Lattice by Magnetic Monopoles Science 2013 340 1076 1080 10.1126/science.1234657 23723232
47. Yagil, A. et al . Stray field signatures of Néel-textured skyrmions in Ir/Fe/Co/Pt multilayer films. arXiv:1705 . 07608v1 (2017).
48. Legrand W Room-Temperature Current-Induced Generation and Motion of sub-100 nm Skyrmions Nano Lett. 2017 17 2703 2712 10.1021/acs.nanolett.7b00649 28358984
49. Berganza, E. et al . Observation of hedgehog skyrmions in sub-100 nm soft magnetic nanodots. arXiv:1803 . 08768 (2018).
50. Alford, T. L., Feldman, L. C. & Mayer, J. W. Fundamentals of Nanoscale Film Analysis Fundamentals of Nanoscale Film Analysis . (Springer US, 10.1007/978-0-387-29261-8 2007).
51. Kim S Contributions of Co and Fe orbitals to perpendicular magnetic anisotropy of MgO/CoFeB bilayers with Ta, W, IrMn, and Ti underlayers Appl. Phys. Express 2017 10 073006 10.7567/APEX.10.073006
52. Radaelli G Electric control of magnetism at the Fe/BaTiO 3 interface Nat. Commun. 2014 5 3404 10.1038/ncomms4404 24584546
53. Ebke D X-Ray Absorption and Magnetic Circular Dichroism Studies of Co 2 FeAl in Magnetic Tunnel Junctions IEEE Trans. Magn. 2010 46 1925 1928 10.1109/TMAG.2010.2041049
54. Miedema PS De Groot FMF The iron L edges: Fe2p X-ray absorption and electron energy loss spectroscopy J. Electron Spectros. Relat. Phenomena 2013 187 32 48 10.1016/j.elspec.2013.03.005
55. Rehr JJ Albers RC Theoretical approaches to x-ray absorption fine structure Rev. Mod. Phys. 2000 72 621 654 10.1103/RevModPhys.72.621
56. Rehr JJ Ab initio theory and calculations of X-ray spectra Comptes Rendus Phys. 2009 10 548 559 10.1016/j.crhy.2008.08.004
57. Luches P X-ray absorption study at the Mg and O K edges of ultrathin MgO epilayers on Ag(001) Phys. Rev. B 2004 69 045412 10.1103/PhysRevB.69.045412
58. Tougerti, A. et al . Surface Science Approach to the Solid-Liquid Interface: Surface-Dependent Precipitation of Ni(OH) 2 on α-Al 2 O 3 Surfaces. Angew . Chemie Int . Ed . 51 , 7697–7701 (2012).
59. Bunker, G. INTRODUCTION TO XAFS A Practical Guide to X-ray Absorption Fine Structure Spectroscopy . (Cambridge University Press, New York, 2010).
60. Balke B Structural characterization of the Co 2 FeZ (Z = Al, Si, Ga, and Ge) Heusler compounds by x-ray diffraction and extended x-ray absorption fine structure spectroscopy Appl. Phys. Lett. 2007 90 172501 10.1063/1.2731314
61. Bainsla L Local structure studies of CoFeMn X (X = Si and Ge) Heusler alloys using X-ray absorption spectroscopy J. Alloys Compd. 2015 651 509 513 10.1016/j.jallcom.2015.08.131
62. Nembach HT Shaw JM Weiler M Jué E Silva TJ Linear relation between Heisenberg exchange and interfacial Dzyaloshinskii–Moriya interaction in metal films Nat. Phys. 2015 11 825 829 10.1038/nphys3418
63. Damon RW Eshbach JR Magnetostatic modes of a ferromagnet slab J. Phys. Chem. Solids 1961 19 308 320 10.1016/0022-3697(61)90041-5
64. Belmeguenai M Brillouin light scattering investigation of the thickness dependence of Dzyaloshinskii-Moriya interaction in CoFe ultrathin films Phys. Rev. B 2016 93 174407 10.1103/PhysRevB.93.174407
65. Soumyanarayanan A Tunable Room Temperature Magnetic Skyrmions in Ir/Fe/Co/Pt Multilayers Nat. Mater. 2016 16 898 904 10.1038/nmat4934
66. Zhu, X. & Grütter, P. I maging, Manipulation, and Spectroscopic Measurements of Nanomagnets by Magnetic Force Microscopy. MRS Bull . 457–462 (2004).
67. Shinjo T Magnetic Vortex Core Observation in Circular Dots of Permalloy Science 2000 289 930 932 10.1126/science.289.5481.930 10937991
68. Ho, P. et al . Sub-100 nm Skyrmions at Zero Magnetic Field in Ir/Fe/Co/Pt Nanostructures. arXiv Prepr . arXiv1709 . 04878v1 (2017).
69. Vansteenkiste A The design and verification of MuMax3 AIP Adv. 2014 4 107133 10.1063/1.4899186
70. Belmeguenai M Co 2 FeAl Heusler thin films grown on Si and MgO substrates: Annealing temperature effect J. Appl. Phys. 2014 115 043918 10.1063/1.4863398
71. Yu X From the Cover: Magnetic stripes and skyrmions with helicity reversals Proc. Natl. Acad. Sci. 2012 109 8856 8860 10.1073/pnas.1118496109 22615354
72. Zhao X Direct imaging of magnetic field-driven transitions of skyrmion cluster states in FeGe nanodisks Proc. Natl. Acad. Sci. 2016 113 4918 4923 10.1073/pnas.1600197113 27051067
73. Rózsa L Skyrmions with attractive interactions in an ultrathin magnetic film Phys. Rev. Lett. 2016 117 157205 10.1103/PhysRevLett.117.157205 27768339
74. Müller J Magnetic Skyrmions and Skyrmion Clusters in the Helical Phase of Cu 2 OSe 3 Phys. Rev. Lett. 2017 119 137201 10.1103/PhysRevLett.119.137201 29341720
75. Chaurasiya AK Direct observation of interfacial Dzyaloshinskii-Moriya interaction from asymmetric spin-wave propagation in W/CoFeB/SiO 2 heterostructures down to sub-nanometer CoFeB thickness Sci. Rep. 2016 6 32592 10.1038/srep32592 27586260
76. Lee I-J Note: Construction of x-ray scattering and x-ray absorption fine structure beamline at the Pohang Light Source Rev. Sci. Instrum. 2010 81 026103 10.1063/1.3298581 20192520
77. Lee T Oh S The Pohang light source project: Status report Rev. Sci. Instrum. 1992 63 1567 10.1063/1.1143022
78. Ravel B Newville M ATHENA, ARTEMIS, HEPHAESTUS: Data analysis for X-ray absorption spectroscopy using IFEFFIT J. Synchrotron Radiat. 2005 12 537 541 10.1107/S0909049505012719 15968136
79. Singh JP Magnetic, electronic structure and interface study of Fe/MgO/Fe multilayer Adv. Mater. Lett. 2014 5 372 377 10.5185/amlett.2013.105560
80. Jung N Organic-inorganic hybrid PtCo nanoparticle with high electrocatalytic activity and durability for oxygen reduction NPG Asia Mater. 2016 8 e237 10.1038/am.2015.143
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