HomeResearch— IRG-1 Publications

— IRG-1 Publications

Mechanisms, Materials, Devices for Spin Manipulation

(acknowledging DMR-1719875, through Spring 2023)

1 Y. Tang, K. Su, L. Li, Y. Xu, S. Liu, K. Watanabe, T. Taniguchi, J. Hone, C.-M. Jian, C. Xu, K. F. Mak, and J. Shan, “Evidence of frustrated magnetic interactions in a Wigner–Mott insulator,” Nat. Nanotechnol. (2023). http://dx.doi.org/10.1038/s41565-022-01309-8
2 Z. Chen, E. Turgut, Y. Jiang, K. X. Nguyen, M. J. Stolt, S. Jin, D. C. Ralph, G. D. Fuchs, and D. A. Muller, “Lorentz electron ptychography for imaging magnetic textures beyond the diffraction limit,” Nat. Nanotechnol. 19, 1165–1170 (2022). http://dx.doi.org/10.1038/s41565-022-01224-y
3 X. S. Zhang, K. X. Nguyen, E. Turgut, Z. Chen, C. S. Chang, Y.-T. Shao, G. D. Fuchs, and D. A. Muller, “Detection Limits for Imaging Chiral Magnetic Materials with 4-Dimensional Lorentz Scanning Transmission Electron Microscopy,” Microsc. Microanal. 28, 1698–1700 (2022). http://dx.doi.org/10.1017/S1431927622006742
4 V. Gupta, R. Jain, Y. Ren, X. S. Zhang, H. F. Alnaser, A. Vashist, V. V. Deshpande, D. A. Muller, D. Xiao, T. D. Sparks, and D. C. Ralph, “Gate-Tunable Anomalous Hall Effect in a 3D Topological Insulator/2D Magnet van der Waals Heterostructure,” Nano Lett. 22, 7166–7172 (2022). http://dx.doi.org/10.1021/acs.nanolett.2c02440
5 K. X. Nguyen, X. S. Zhang, E. Turgut, M. C. Cao, J. Glaser, Z. Chen, M. J. Stolt, C. S. Chang, Y.-T. Shao, S. Jin, G. D. Fuchs, and D. A. Muller, “Disentangling Magnetic and Grain Contrast in Polycrystalline Fe Ge Thin Films Using Four-Dimensional Lorentz Scanning Transmission Electron Microscopy,” Phys. Rev. Applied 17, 034066/1–16 (2022). http://dx.doi.org/10.1103/PhysRevApplied.17.034066
6 Y. Zhou, D. N. Sheng, and E.-A. Kim, “Quantum Phases of Transition Metal Dichalcogenide Moiré Systems,” Phys. Rev. Lett. 128, 157602/1–6 (2022). http://dx.doi.org/10.1103/PhysRevLett.128.157602
7 A. Bose, N. J. Schreiber, R. Jain, D.-F. Shao, H. P. Nair, J. Sun, X. S. Zhang, D. A. Muller, E. Y. Tsymbal, D. G. Schlom, and D. C. Ralph, “Tilted spin current generated by the collinear antiferromagnet ruthenium dioxide,” Nat Electron (2022). http://dx.doi.org/10.1038/s41928-022-00744-8
8 Q. Liu, L. Zhu, X. S. Zhang, D. A. Muller, and D. C. Ralph, “Giant bulk spin–orbit torque and efficient electrical switching in single ferrimagnetic FeTb layers with strong perpendicular magnetic anisotropy,” Applied Physics Reviews 9, 021402/1–8 (2022). http://dx.doi.org/10.1063/5.0087260
9 A. Bose, R. Jain, J. J. Bauer, R. A. Buhrman, C. A. Ross, and D. C. Ralph, “Origin of transverse voltages generated by thermal gradients and electric fields in ferrimagnetic-insulator/heavy-metal bilayers,” Phys. Rev. B 105, L100408/1-6 (2022). http://dx.doi.org/10.1103/PhysRevB.105.L100408
10 R. Li, P. Li, D. Yi, L. J. Riddiford, Y. Chai, Y. Suzuki, D. C. Ralph, and T. Nan, “Anisotropic Magnon Spin Transport in Ultrathin Spinel Ferrite Thin Films─Evidence for Anisotropy in Exchange Stiffness,” Nano Lett. 22, 1167-1173/1–7 (2022). http://dx.doi.org/10.1021/acs.nanolett.1c04332
11 L. Zhu, L. Zhu, and R. A. Buhrman, “Fully Spin-Transparent Magnetic Interfaces Enabled by the Insertion of a Thin Paramagnetic NiO Layer,” Phys. Rev. Lett. 126, 107204/1–7 (2021). http://dx.doi.org/10.1103/PhysRevLett.126.107204
12 L. Zhu and R. A. Buhrman, “Absence of Significant Spin-Current Generation in Ti / Fe − Co − B Bilayers with Strong Interfacial Spin-Orbit Coupling,” Phys. Rev. Applied 15, L031001/1-6 (2021). http://dx.doi.org/10.1103/PhysRevApplied.15.L031001
13 T. Li, S. Jiang, B. Shen, Y. Zhang, L. Li, Z. Tao, T. Devakul, K. Watanabe, T. Taniguchi, L. Fu, J. Shan, and K. F. Mak, “Quantum anomalous Hall effect from intertwined moiré bands,” Nature 600, 641-646/1–18 (2021). http://dx.doi.org/10.1038/s41586-021-04171-1
14 T. Xu, Z. Chen, H.-A. Zhou, Z. Wang, Y. Dong, L. Aballe, M. Foerster, P. Gargiani, M. Valvidares, D. M. Bracher, T. Savchenko, A. Kleibert, R. Tomasello, G. Finocchio, S.-G. Je, M.-Y. Im, D. A. Muller, and W. Jiang, “Imaging the spin chirality of ferrimagnetic Néel skyrmions stabilized on topological antiferromagnetic Mn3Sn,” Phys. Rev. Materials 5, 084406/1–10 (2021). http://dx.doi.org/10.1103/PhysRevMaterials.5.084406
15 D. Low, G. M. Ferguson, A. Jarjour, B. T. Schaefer, M. D. Bachmann, P. J. W. Moll, and K. C. Nowack, “Scanning SQUID microscopy in a cryogen-free dilution refrigerator,” Review of Scientific Instruments 92, 083704/1–11 (2021). http://dx.doi.org/10.1063/5.0047652
16 L. Zhu, D. C. Ralph, and R. A. Buhrman, “Lack of Simple Correlation between Switching Current Density and Spin-Orbit-Torque Efficiency of Perpendicularly Magnetized Spin-Current-Generator–Ferromagnet Heterostructures,” Phys. Rev. Applied 15, 024059/1–8 (2021). http://dx.doi.org/10.1103/PhysRevApplied.15.024059
17 J. Zhu, T. Li, A. F. Young, J. Shan, and K. F. Mak, “Quantum Oscillations in Two-Dimensional Insulators Induced by Graphite Gates,” Phys. Rev. Lett. 127, 247702/1–6 (2021). http://dx.doi.org/10.1103/PhysRevLett.127.247702
18 X. Zhang, Z. Chen, and D. Muller, “How many detector pixels do we need for super-resolution ptychography?,” Microsc Microanal 27, 620-622/1–3 (2021). http://dx.doi.org/10.1017/S1431927621002622
19 Y. Xu, A. Ray, Y.-T. Shao, S. Jiang, K. Lee, D. Weber, J. E. Goldberger, K. Watanabe, T. Taniguchi, D. A. Muller, K. F. Mak, and J. Shan, “Coexisting ferromagnetic–antiferromagnetic state in twisted bilayer CrI3,” Nat. Nanotechnol. 1–17 (2021). http://dx.doi.org/10.1038/s41565-021-01014-y
20 B. T. Schaefer and K. C. Nowack, “Electrically tunable and reversible magnetoelectric coupling in strained bilayer graphene,” Phys. Rev. B 103, 224426/1–11 (2021). http://dx.doi.org/10.1103/PhysRevB.103.224426
21 S. Dutta, A. Bose, A. A. Tulapurkar, R. A. Buhrman, and D. C. Ralph, “Interfacial and bulk spin Hall contributions to fieldlike spin-orbit torque generated by iridium,” Phys. Rev. B 103, 184416/1–7 (2021). http://dx.doi.org/10.1103/PhysRevB.103.184416
22 L. Zhu, D. C. Ralph, and R. A. Buhrman, “Unveiling the Mechanism of Bulk Spin‐Orbit Torques within Chemically Disordered FexPt1‐x Single Layers,” Adv. Funct. Mater. 31, 2103898/1–7 (2021). http://dx.doi.org/10.1002/adfm.202103898
23 Z. Chen, T. Xu, G. Fuchs, W. Jiang, and D. Muller, “Determining the Chirality of Néel-type Magnetic Skyrmions by Phase Retrieval with Four-dimensional Lorentz Scanning Transmission Electron Microscopy,” Microsc Microanal 26, 2136–2137 (2020). http://dx.doi.org/10.1017/S1431927620020565
24 Y. Wang, J. Balgley, E. Gerber, M. Gray, N. Kumar, X. Lu, J.-Q. Yan, A. Fereidouni, R. Basnet, S. J. Yun, D. Suri, H. Kitadai, T. Taniguchi, K. Watanabe, X. Ling, J. Moodera, Y. H. Lee, H. O. H. Churchill, J. Hu, L. Yang, E.-A. Kim, D. G. Mandrus, E. A. Henriksen, and K. S. Burch, “Modulation Doping via a Two-Dimensional Atomic Crystalline Acceptor,” Nano Lett. 20, 8446–8452 (2020). http://dx.doi.org/10.1021/acs.nanolett.0c03493
25 A. Ray, Y.-T. Shao, Y. Xu, N. Sivadas, T. Li, Z. Wang, K. F. Mak, J. Shan, C. Fennie, and D. Muller, “Mapping Stacking and Stacking Defects in the 2D Ferromagnet CrI3,” Microsc Microanal 26, 636–638 (2020). http://dx.doi.org/10.1017/S1431927620015366
26 V. Gupta, T. M. Cham, G. M. Stiehl, A. Bose, J. A. Mittelstaedt, K. Kang, S. Jiang, K. F. Mak, J. Shan, R. A. Buhrman, and D. C. Ralph, “Manipulation of the van der Waals Magnet Cr2Ge2Te6 by Spin–Orbit Torques,” Nano Lett. 7482–7488 (2020). http://dx.doi.org/10.1021/acs.nanolett.0c02965
27 X.-X. Zhang, L. Li, D. Weber, J. Goldberger, K. F. Mak, and J. Shan, “Gate-tunable spin waves in antiferromagnetic atomic bilayers,” Nature Mater. 19, 838–842 (2020). http://dx.doi.org/10.1038/s41563-020-0713-9
28 C. Jin, Z. Tao, K. Kang, K. Watanabe, T. Taniguchi, K. F. Mak, and J. Shan, “Imaging and control of critical fluctuations in two-dimensional magnets,” Nature Mater. 19, 1290–1294 (2020). http://dx.doi.org/10.1038/s41563-020-0706-8
29 A. M. Park, Z. Chen, X. S. Zhang, L. Zhu, D. A. Muller, and G. D. Fuchs, “Operando control of skyrmion density in a Lorentz transmission electron microscope with current pulses,” Journal of Applied Physics 128, 233902 (2020). http://dx.doi.org/10.1063/5.0020373
30 L. Zhu, X. S. Zhang, D. A. Muller, D. C. Ralph, and R. A. Buhrman, “Observation of Strong Bulk Damping‐Like Spin‐Orbit Torque in Chemically Disordered Ferromagnetic Single Layers,” Adv. Funct. Mater. 2005201 (2020). http://dx.doi.org/10.1002/adfm.202005201
31 A. B. Mei, I. Gray, Y. Tang, J. Schubert, D. Werder, J. Bartell, D. C. Ralph, G. D. Fuchs, and D. G. Schlom, “Local Photothermal Control of Phase Transitions for On-Demand Room-Temperature Rewritable Magnetic Patterning,” Adv. Mater. 32, 2001080 (2020). http://dx.doi.org/https://doi.org/10.1002/adma.202001080
32 L. Zhu, L. Zhu, S. Shi, D. C. Ralph, and R. A. Buhrman, “Energy‐Efficient Ultrafast SOT‐MRAMs Based on Low‐Resistivity Spin Hall Metal Au0.25Pt0.75,” Adv. Electron. Mater. 6, 1901131/1–7 (2020). http://dx.doi.org/10.1002/aelm.201901131
33 L. Zhu, L. Zhu, D. C. Ralph, and R. A. Buhrman, “Origin of Strong Two-Magnon Scattering in Heavy-Metal/Ferromagnet/Oxide Heterostructures,” Phys. Rev. Applied 13, 034038 (2020). http://dx.doi.org/10.1103/PhysRevApplied.13.034038
34 L. Li, S. Jiang, Z. Wang, K. Watanabe, T. Taniguchi, J. Shan, and K. F. Mak, “Electrical switching of valley polarization in monolayer semiconductors,” Phys. Rev. Materials 4, 104005 (2020). http://dx.doi.org/10.1103/PhysRevMaterials.4.104005
35 S. Jiang, H. Xie, J. Shan, and K. F. Mak, “Exchange magnetostriction in two-dimensional antiferromagnets,” Nature Mater. 1–13 (2020). http://dx.doi.org/10.1038/s41563-020-0712-x
36 E. Gerber, Y. Yao, T. A. Arias, and E.-A. Kim, “Ab Initio Mismatched Interface Theory of Graphene on α − RuCl3: Doping and Magnetism,” Phys. Rev. Lett. 124, 106804/1–5 (2020). http://dx.doi.org/10.1103/PhysRevLett.124.106804
37 X. Zhang, E. Padgett, L. Zhu, R. Buhrman, and D. Muller, “A Robust Basis for Grain Identification in Polycrystalline Thin Film Devices Using Cepstrum Transforms of 4D-STEM Diffraction Pattern,” Microsc Microanal 26, 1620–1622 (2020). http://dx.doi.org/10.1017/S1431927620018759
38 B. T. Schaefer, L. Wang, A. Jarjour, K. Watanabe, T. Taniguchi, P. L. McEuen, and K. C. Nowack, “Magnetic field detection limits for ultraclean graphene Hall sensors,” Nature Commun. 11, 4163 (2020). http://dx.doi.org/10.1038/s41467-020-18007-5
39 A. Bose, J. N. Nelson, X. S. Zhang, P. Jadaun, R. Jain, D. G. Schlom, D. C. Ralph, D. A. Muller, K. M. Shen, and R. A. Buhrman, “Effects of Anisotropic Strain on Spin–Orbit Torque Produced by the Dirac Nodal Line Semimetal IrO2,” ACS Appl. Mater. Interfaces 12, 55411–55416 (2020). http://dx.doi.org/https://doi.org/10.1021/acsami.0c16485
40 L. Zhu and R. A. Buhrman, “Maximizing Spin-Orbit-Torque Efficiency of Pt / Ti Multilayers: Trade-Off Between Intrinsic Spin Hall Conductivity and Carrier Lifetime,” Phys. Rev. Applied 12, 051002/1–6 (2019). http://dx.doi.org/10.1103/PhysRevApplied.12.051002
41 G. M. Stiehl, R. Li, V. Gupta, I. E. Baggari, S. Jiang, H. Xie, L. F. Kourkoutis, K. F. Mak, J. Shan, R. A. Buhrman, and D. C. Ralph, “Layer-dependent spin-orbit torques generated by the centrosymmetric transition metal dichalcogenide β − MoTe2,” Phys. Rev. B 100, 184402 (2019). http://dx.doi.org/10.1103/PhysRevB.100.184402
42 G. M. Stiehl, D. MacNeill, N. Sivadas, I. El Baggari, M. H. D. Guimarães, N. D. Reynolds, L. F. Kourkoutis, C. J. Fennie, R. A. Buhrman, and D. C. Ralph, “Current-Induced Torques with Dresselhaus Symmetry Due to Resistance Anisotropy in 2D Materials,” ACS Nano 13, 2599–2605 (2019). http://dx.doi.org/10.1021/acsnano.8b09663
43 L. Zhu, L. Zhu, M. Sui, D. C. Ralph, and R. A. Buhrman, “Variation of the giant intrinsic spin Hall conductivity of Pt with carrier lifetime,” Sci. Adv. 5, 1–9 (2019). http://dx.doi.org/10.1126/sciadv.aav8025
44 L. Zhu, D. C. Ralph, and R. A. Buhrman, “Effective Spin-Mixing Conductance of Heavy-Metal–Ferromagnet Interfaces,” Phys. Rev. Lett. 123, 057203/1–7 (2019). http://dx.doi.org/10.1103/PhysRevLett.123.057203
45 L. Zhu, L. Zhu, S. Shi, Sui, Manling, D. C. Ralph, and R. A. Buhrman, “Enhancing Spin-Orbit Torque by Strong Interfacial Scattering From Ultrathin Insertion Layers,” Phys. Rev. Applied 11, 061004/1–5 (2019). http://dx.doi.org/10.1103/PhysRevApplied.11.061004
46 Y. Ou, Z. Wang, C. S. Chang, H. P. Nair, H. Paik, N. Reynolds, D. C. Ralph, D. A. Muller, D. G. Schlom, and R. A. Buhrman, “Exceptionally High, Strongly Temperature Dependent, Spin Hall Conductivity of SrRuO3,” Nano Lett. published online (2019). http://dx.doi.org/10.1021/acs.nanolett.9b00729
47 L. Zhu, K. Sobotkiewich, X. Ma, X. Li, D. C. Ralph, and R. A. Buhrman, “Strong Damping-Like Spin-Orbit Torque and Tunable Dzyaloshinskii-Moriya Interaction Generated by Low-Resistivity Pd1−x Ptx Alloys,” Advanced Functional Materials 1805822/1–8 (2019). http://dx.doi.org/10.1002/adfm.201805822
48 L. Zhu, D. C. Ralph, and R. A. Buhrman, “Spin-Orbit Torques in Heavy-Metal–Ferromagnet Bilayers with Varying Strengths of Interfacial Spin-Orbit Coupling,” Phys. Rev. Lett. 122, 077201/1–6 (2019). http://dx.doi.org/10.1103/PhysRevLett.122.077201
49 M. D. Bachmann, G. M. Ferguson, F. Theuss, T. Meng, C. Putzke, T. Helm, K. R. Shirer, Y.-S. Li, K. A. Modic, M. Nicklas, M. König, D. Low, S. Ghosh, A. P. Mackenzie, F. Arnold, E. Hassinger, R. D. McDonald, L. E. Winter, E. D. Bauer, F. Ronning, B. J. Ramshaw, K. C. Nowack, and P. J. W. Moll, “Spatial control of heavy-fermion superconductivity in CeIrIn5,” Science 366, 221–226 (2019). http://dx.doi.org/10.1126/science.aao6640
50 S. Jiang, L. Li, Z. Wang, J. Shan, and K. F. Mak, “Spin tunnel field-effect transistors based on two-dimensional van der Waals heterostructures,” Nature Electronics 2, 159–163 (2019). http://dx.doi.org/10.1038/s41928-019-0232-3
51 T. Li, S. Jiang, N. Sivadas, Z. Wang, Y. Xu, D. Weber, J. E. Goldberger, K. Watanabe, T. Taniguchi, C. J. Fennie, K. Fai Mak, and J. Shan, “Pressure-controlled interlayer magnetism in atomically thin CrI3,” Nature Mater. 18, 1303–1308 (2019). http://dx.doi.org/10.1038/s41563-019-0506-1
52 K. F. Mak, J. Shan, and D. C. Ralph, “Probing and controlling magnetic states in 2D layered magnetic materials,” Nature Rev Phys. 1, 646–661 (2019). http://dx.doi.org/10.1038/s42254-019-0110-y
53 I. Gray, T. Moriyama, N. Sivadas, G. M. Stiehl, J. T. Heron, R. Need, B. J. Kirby, D. H. Low, K. C. Nowack, D. G. Schlom, D. C. Ralph, T. Ono, and G. D. Fuchs, “Spin Seebeck Imaging of Spin-Torque Switching in Antiferromagnetic Pt / NiO Heterostructures,” Phys. Rev. X 9, 041016/1–10 (2019). http://dx.doi.org/10.1103/PhysRevX.9.041016
54 R. Yan, G. Khalsa, B. T. Schaefer, A. Jarjour, S. Rouvimov, K. C. Nowack, H. G. Xing, and D. Jena, “Thickness dependence of superconductivity in ultrathin NbS2,” Applied Physics Express 12, 023008/1–5 (2019). http://dx.doi.org/10.7567/1882-0786/aaff89
55 I. Gray, G. M. Stiehl, J. T. Heron, A. B. Mei, D. G. Schlom, R. Ramesh, D. C. Ralph, and G. D. Fuchs, “Imaging uncompensated moments and exchange-biased emergent ferromagnetism in FeRh thin films,” Phys. Rev. Materials 3, 124407/1–15 (2019). http://dx.doi.org/10.1103/PhysRevMaterials.3.124407
56 E. Turgut, H. Paik, K. Nguyen, D. A. Muller, D. G. Schlom, and G. D. Fuchs, “Engineering Dzyaloshinskii-Moriya interaction in B20 thin-film chiral magnets,” Phys. Rev. Materials 2, 074404/1–8 (2018). http://dx.doi.org/10.1103/PhysRevMaterials.2.074404
57 M.-H. Nguyen, S. Shi, G. E. Rowlands, S. V. Aradhya, C. L. Jermain, D. C. Ralph, and R. A. Buhrman, “Efficient switching of 3-terminal magnetic tunnel junctions by the giant spin Hall effect of Pt85Hf15 alloy,” Appl. Phys. Lett. 112, 062404/1–6 (2018). http://dx.doi.org/10.1063/1.5021077
58 L. J. Zhu, D. C. Ralph, and R. A. Buhrman, “Irrelevance of magnetic proximity effect to spin-orbit torques in heavy-metal/ferromagnet bilayers,” Phys. Rev. B 98, 134406/1–5 (2018). http://dx.doi.org/10.1103/PhysRevB.98.134406
59 M. H. D. Guimarães, G. M. Stiehl, D. MacNeill, N. D. Reynolds, and D. C. Ralph, “Spin–Orbit Torques in NbSe2/Permalloy Bilayers,” Nano Lett. 18, 1311–1316 (2018). http://dx.doi.org/10.1021/acs.nanolett.7b04993
60 J. L. Grab, A. E. Rugar, and D. C. Ralph, “Creation of localized skyrmion bubbles in Co/Pt bilayers using a spin-valve nanopillar,” Phys. Rev. B 97, 184424/1–9 (2018). http://dx.doi.org/10.1103/PhysRevB.97.184424
61 Y.-T. Hsu, K. Park, and E.-A. Kim, “Hybridization-induced interface states in a topological-insulator–ferromagnetic-metal heterostructure,” Phys. Rev. B 96, 235433/1–5 (2017). http://dx.doi.org/10.1103/PhysRevB.96.235433
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