Theoretical Study of Strongly Correlated Electron Systems
 Satoshi Okamoto Oak Ridge National Laboratory
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Recent Publications (past 5 years)

  1. S. Okamoto and N. Nagaosa, “Critical enhancement of the spin Hall effect by spin fluctuations,” npj Quantum Mater. 9, 29 (2024).
  2. C. Fang, C. Wan, X. Zhang, S. Okamoto, T. Ma, J. Qin, X. Wang, C. Guo, J. Dong, G. Yu, Z. Wen, N. Tang, S. S. P. Parkin, N. Nagaosa, Y. Lu, and X. Han, “Observation of the Fluctuation Spin Hall Effect in a Low-Resistivity Antiferromagnet,” Nano Lett. 23, 11485 (2023).
  3. B. Pandey, S. Okamoto, and E. Dagotto, “Unexpected results for the non-trivial fusion of Majorana zero modes in interacting quantum-dot arrays,” arXiv:2311.15079.
  4. H. Miao, T. T. Zhang, H. X. Li, G. Fabbris, A. H. Said, R. Tartaglia, T. Yilmaz, E. Vescovo, S. Murakami, L. X. Feng, K. Jiang, X. L. Wu, A. F. Wang, S. Okamoto, Y. L. Wang, and H. N. Lee, “Signature of spin-phonon coupling driven charge density wave in a kagome magnet,” Nat. Commun. 14,6183 (2023).
  5. T. A. Maier and S. Okamoto, “Weak-coupling theory of neutron scattering as a probe of altermagnetism,” Phys. Rev. B 108, L100402 (2023).
  6. N. Mohanta, R. Soni, S. Okamoto, and E. Dagotto, “Majorana corner states in the dice lattice,” Commun. Phys. 6, 240 (2023).
  7. A. Scheie, P. Park, J. W. Villanova, G. E. Granroth, C. L. Sarkis, H. Zhang, M. B. Stone, J.-G. Park, S. Okamoto, T. Berlijn, and D. A. Tennant, “Spin wave Hamiltonian and anomalous scattering in NiPS3,” Phys. Rev. B 108, 104402 (2023).
  8. S. Li, L.-H. Hu, R.-X. Zhang, and S. Okamoto, “Topological superconductivity from forward phonon scatterings,” Commun. Phys. 6, 235 (2023).
  9. A. O. Scheie, Y. Kamiya, Hao Zhang, Sangyun Lee, A.J. Woods, A.M. Omanakuttan, M. G. Gonzalez, B. Bernu, J.W. Villanova, J. Xing, Q. Huang, Qingming Zhang, Jie Ma, Eun Sang Choi, D. M. Pajerowski, Haidong Zhou, A. S. Sefat, S. Okamoto, T. Berlijn, L. Messio, R. Movshovich, C. D. Batista, and D. A. Tennant, “Non-linear magnons and exchange Hamiltonians of delafossite proximate quantum spin liquids,” arXiv:2207.14785.
  10. J. W. Villanova, A. O. Scheie, D. A. Tennant, S. Okamoto, and T. Berlijn, “First-principles derivation of magnetic interactions in the triangular quantum spin liquid candidates” KYbCh2 (Ch= S, Se, Te) and AYbSe2 (A=Na, Rb), Phys. Rev. Research 5, 033050 (2023).
  11. R. G. Moore, T. Smith, X. Yao, Y.-Y. Pai, M. Chilcote, H. Miao, S. Okamoto, S. Oh, and M. Brahlek, “Monolayer superconductivity and tunable topological electronic structure at the Fe(Te,Se)/Bi2Te3 interface,” Adv. Mater. 35, 2210940 (2023).
  12. M. A. McGuire, E. M. Clements, Q. Zhang, and S. Okamoto, “Double-layer Kagome Metals Pt3Tl2 and Pt3In2,” Crystals 13, 833 (2023).
  13. M. A. McGuire, H. Zhang, A. F. May, S. Okamoto, R. G. Moore, X. Wang, C. Girod, S. M. Thomas, F. Ronning, and J. Q. Yan, “Superconductivity by alloying the topological insulator SnBi2Te4,” Phys. Rev. Materials 7, 034802 (2023).
  14. E. Ergeçen, B. Ilyas, J. Kim, J. Park, M. B. Yilmaz, T. Luo, D. Xiao, S. Okamoto, J.-G. Park, and N. Gedik, “Coherent detection of hidden spin-lattice coupling in a van der Waals antiferromagnet,” Proc. Natl. Acad. Sci. U.S.A. 120, e2208968120 (2023).
  15. G. Cao, S. Okamoto, J. Guo, E. D. Specht, T. Z. Ward, M. A. McGuire, J. D. Budai, M. F. Chisholm, D. Mandrus, B. C. Sales, and Z. Gai, “Magnetocaloric Effect in Lightly-Doped Fe5Si3 Single Crystals,” Adv. Phys. Res. 2200047 (2023).
  16. R. S. Fishman, L. Lindsay, and S. Okamoto, “Exact results for the orbital angular momentum of magnons on honeycomb lattices,” J. Phys.: Condens. Matter 51, 015801 (2023).
  17. R. S. Fishman, J. S. Gardner, and S. Okamoto, “Orbital Angular Momentum of Magnons in Collinear Magnets,” Phys. Rev. Lett. 129, 167202 (2022)
  18. R. G. Moore, S. Okamoto, H. Li, W. R. Meier, H. Miao, H. N. Lee, M. Hashimoto, D. Lu, E. Dagotto, M. A. McGuire, and B. C. Sales, “Topological electronic structure evolution with symmetry-breaking spin reorientation in (Fe1−xCox)Sn,” Phys. Rev. B 106, 115141 (2022).
  19. S. Okamoto, N. Mohanta, E. Dagotto, and D. N. Sheng, “Topological flat bands in a kagome lattice multiorbital system,” Commun. Phys. 5, 198 (2022).
  20. P. Laurell, A. Scheie, D. A. Tennant, S. Okamoto, G. Alvarez, and E. Dagotto, “Magnetic excitations, nonclassicality, and quantum wake spin dynamics in the Hubbard chain,” Phys. Rev. B 106, 085110 (2022).
  21. Q. Zhang, Y. Zhang, M. Matsuda, V. O Garlea, J. Yan, M. A. McGuire, D. A. Tennant, and S. Okamoto, “Hidden Local Symmetry Breaking in a Kagome-Lattice Magnetic Weyl Semimetal,” J. Am. Chem. Soc. 144, 14339 (2022).
  22. S. Li and S. Okamoto, “Thermal Hall effect in the Kitaev-Heisenberg system with spin-phonon coupling,” Phys. Rev. B 106, 024413 (2022).
  23. A. M. Samarakoon, P. Laurell, C. Balz, A. Banerjee, P. Lampen-Kelley, D. Mandrus, S. E. Nagler, S. Okamoto, and D. A. Tennant, “Extraction of the interaction parameters for α-RuCl3 from neutron data using machine learning,” Phys. Rev. Research 4, L022061 (2022).
  24. M. A. McGuire, Y.-Y. Pai, M. Brahlek, S. Okamoto, and R.G. Moore, “Electronic and topological properties of the van der Waals layered superconductor PtTe,” Phys. Rev. B 105, 184514 (2022).
  25. H. Idzuchi, M. Kimata, S. Okamoto, P. Laurell, N. Mohanta, M. Cothrine, S. E. Nagler, D. Mandrus, A. Banerjee, and Y. P. Chen, “Spin sensitive transport in a spin liquid material: revealing a robustness of spin anisotropy,” arXiv:2204.03158.
  26. N. Mohanta, J. M. Ok, J. Zhang, H. Miao, E. Dagotto, H.-N. Lee, and S. Okamoto, “Semi-Dirac and Weyl fermions in transition metal oxides,” Phys. Rev. B 104, 235121 (2021).
  27. R. Soni, A. B. Sanyal, N. Kaushal, S. Okamoto, A. Moreo, and E. Dagotto, “Multitude of topological phase transitions in bipartite dice and Lieb lattices with interacting electrons and Rashba coupling,” Phys. Rev. B 104, 235115 (2021).
  28. H. Li, A. Said, J. Q. Yan, D. M. Mandrus, H. N. Lee, S. Okamoto, G. B. Halász, and H. Miao, “Divergence of Majorana-Phonon Scattering in Kitaev Quantum Spin Liquid,” arXiv:2112.02015.
  29. M. Sretenovic, S. Okamoto, G. Peiker, T. X. Tang, H. Zhang, C. Q. Xu, T. W. Heitmann, Q. Zhang, C. R. dela Cruz, and X. Ke, “Competing energetic states in γ-Fe2WO6with strong spin-charge-lattice coupling,” Phys. Rev. B 104, 134413 (2021).
  30. J. M. Ok, M. Mohanta, J. Zhang, S. Yoon, S. Okamoto, E. S. Choi, H. Zhou, M. Briggeman, P. Irvin, A. R. Lupini, Y.-Y. Pai, E. Skoropata, C. Sohn, H. Li, H. Miao, B. Lawrie, W. S. Choi, G. Eres, J. Levy, and H. N. Lee, “Correlated Oxide Dirac Semimetal in the Extreme Quantum Limit,” Sci. Adv. 7, eabf9631 (2021).
  31. Q. Zhang, S. Okamoto, G. D. Samolyuk, M. B. Stone, A. I. Kolesnikov, R. Xue, J. Yan, M. A. McGuire, D. Mandrus, and D. A. Tennant, “Unusual Exchange Couplings and Intermediate Temperature Weyl State in Co3Sn2S2,” Phys. Rev. Lett. 127, 117201 (2021).
  32. N. Mohanta, S. Okamoto, and E. Dagotto, “Skyrmion control of MajoranasStates in planar Josephson junctions,” Commun. Phys. 4, 163 (2021).
  33. P. Laurell, A. Scheie, C. J. Mukherjee, M. M. Koza, M. Enderle, Z. Tylczynski, S. Okamoto, R. Coldea, D. A. Tennant, and G. Alvarez, “Quantifying and Controlling Entanglement in the Quantum Magnet Cs2CoCl4,” Phys. Rev. Lett. 127, 037201 (2021).
  34. A. Scheie, P. Laurell, A. M. Samarakoon, B. Lake, S. E. Nagler, G. E. Granroth, S. Okamoto, G. Alvarez, and D. A. Tennant, “Witnessing entanglement in quantum magnets using neutron scattering,” Phys. Rev. B 103, 224434 (2021). This paper was selected as an Editors’ Suggestion.
  35. H. Li, T. T. Zhang, A. Said, G. Fabbris, D. G. Mazzone, J. Q. Yan, D. Mandrus, G. B. Halász, S. Okamoto, S. Murakami, M. P. M. Dean, H. N. Lee, and H. Miao, “Giant phonon anomalies in the proximate Kitaev quantum spin liquid α-RuCl3,” Nat. Commun. 12, 3513 (2021).
  36. M.-W. Yoo, J. Tornos, A. Sander, L.-F. Lin, N. Mohanta, A. Peralta, D. Sanchez-Manzano, F. Gallego, D. Haskel, J. W. Freeland, D. J. Keavney, Y. Choi, J. Strempfer, X. Wang, M. Cabero, H. B. Vasili, M. Valvidares, J. M. Gonzalez-Calbet, A. Rivera, C. Leon, S. Rosenkranz, M. Bibes, A. Barthelemy, A. Anane, E. Dagotto, S. Okamoto, S. G. E. te Velthuis, J. Santamaria, and J. E. Villegas, “Large intrinsic anomalous Hall effect in SrIrO3 induced by magnetic proximity effect,” Nat. Commun. 12, 3283 (2021).
  37. S. Shen, Z. Li, Z. Tian, W. Luo, S. Okamoto, and P. Yu, “Emergent Ferromagnetism with Fermi-liquid Behavior in Proton Intercalated CaRuO3,” Phys. Rev. X 11, 021018 (2021).
  38. W. R. Meier, B. C. Chakoumakos, S. Okamoto, M. A. McGuire, R. P. Hermann, G. D. Samolyuk, S. Gao, Q. Zhang, M. B. Stone, A. D. Christianson, and B. C. Sales, “A catastrophic charge density wave in BaFe2Al9,” Chem. Mater. 33, 2855 (2021).
  39. X. Huang, T. Wang, S. Miao, C. Wang, Z. Li, Z. Lian, T. Taniguchi, K. Watanabe, S. Okamoto, D. Xiao, S.-F. Shi, and Y.-T. Cui, “Correlated insulating states at fractional fillings of the WS2/WSe2 moiré lattice,” Nat. Phys. 17, 715 (2021).
  40. A. R. Wildes, S. Okamoto, and D. Xiao, “Search for nonreciprocal magnons in MnPS3,” Phys. Rev. B 103, 024424 (2021).
  41. G. Sala, M. B. Stone, Binod K. Rai, A. F. May, P. Laurell, V. O. Garlea, N. P. Butch, M. D. Lumsden, G. Ehlers, G. Pokharel, A. Podlesnyak, D. Mandrus, D. S. Parker, S. Okamoto, G. B. Halász, and A. D. Christianson, “Van Hove singularity in the magnon spectrum of the antiferromagnetic quantum honeycomb lattice,” Nat. Commun. 12, 171 (2021).
  42. N. Mohanta, A. D. Christianson, S. Okamoto, and E. Dagotto, “Signatures of a liquid-crystal transition in spin-wave excitations of skyrmions,” Commun. Phys. 3, 229 (2020).
  43. M. Vogl, P. Laurell, H. Zhang, S. Okamoto, and G. A. Fiete, “Resummation of the Holstein-Primakoff expansion and differential equation approach to operator square-roots,” Phys. Rev. Research 2, 043243 (2020).
  44. W. Ko, M. Kolmer, J.-Q. Yan, A. D. Pham, M. Fu, F. Lüpke, S. Okamoto, Z. Gai,. Ganesh, and A.-P. Li, “Realizing gapped surface states in the magnetic topological insulator MnBi2−xSbxTe4,” Phys. Rev. B 102, 115402 (2020).
  45. W. R. Meier, M.-H. Du, S. Okamoto, N. Mohanta, A. F. May, M. A. McGuire, C. A. Bridges, G. D. Samolyuk, and B. C. Sales, “Flat bands in the CoSn-type compounds,” Phys. Rev. B 102, 075148 (2020).
  46. N. Mohanta, S. Okamoto, and E. Dagotto, “Planar topological Hall effect from conical spin spirals,” Phys. Rev. B 102, 064430 (2020).
  47. S. Okamoto, “Flipping handedness in ferrimagnets,” Nat. Mater. 19, 929 (2020). This article discusses the results reported by Kim et al. Nat. Mater. 19, 980 (2020).
  48. N. Mohanta, A. Taraphder, E. Dagotto, and S. Okamoto, “Magnetic switching in Weyl semimetal-superconductor heterostructures,” Phys. Rev. B 102, 064506 (2020).
  49. H. K. Yoshida, S. E. Dissanayake, A. D. Christianson, C. dela Cruz, Y.-Q. Cheng, S. Okamoto, K. Yamaura, M. Isobe, and M. Matsuda, “Static and dynamic spin properties in a quantum triangular lattice antiferromagnet Ag2CoO2,” Phys. Rev. B 102, 024445 (2020).
  50. R. Soni, N. Kaushal, S. Okamoto, and E. Dagotto, “Flat bands and ferrimagnetic order in electronically correlated dice-lattice ribbons,” Phys. Rev. B 102, 045105 (2020).
  51. E. Skoropata, J. Nichols, J. M. Ok, R. V. Chopdekar, E. S. Choi, A. Rastogi, C. Sohn, X. Gao, S. Yoon, T. Farmer, R. Desautels, Y. Choi, D. Haskel, J. W. Freeland, S. Okamoto, M. Brahlek, and H. N. Lee, “Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures,” Sci. Adv. 6, eaaz3902 (2020).
  52. W. Jiao, D. Z. Hou, C. Chen, H. Wang, Y. Z. Zhang, Y. Tian, Z. Y. Qiu, S. Okamoto, K. Watanabe, A. Hirata, T. Egami, E. Saitoh, and M. W. Chen, “Metallic glasses for spintronics: anomalous temperature dependence and giant enhancement of inverse spin Hall effect,” arXiv:1808.10371.
  53. Y. Wang, Q. He, W. Ming, M.-H. Du, N. Lu, C. Cafolla, J. Fujioka, Q. Zhang, D. Zhang, S. Shen, Y. Lyu, A. T. N’Diaye, E. Arenholz, L. Gu, C. Nan, Y. Tokura, S. Okamoto, and P. Yu, “Robust Ferromagnetism in Highly Strained SrCoO3 Thin Films,” Phys. Rev. X 10, 021030 (2020).
  54. J. A. Santana, J. T. Krogel, S. Okamoto, and F. A. Reboredo, “Electron confinement and magnetism of (LaTiO3)1/(SrTiO3)5 heterostructure: A diffusion quantum Monte Carlo study,”
    J. Chem. Theory Comput. 16, 643 (2020).
  55. P. Laurell and S. Okamoto, “Dynamical and thermal magnetic properties of the Kitaev spin liquid candidate α-RuCl3,” npj Quantum Mater. 5, 2 (2020).
  56. K. Saritas, J. T. Krogel, S. Okamoto, H.-N. Lee, and F. A. Reboredo, “Structural, electronic, and magnetic properties of bulk and epitaxial LaCoO3 through diffusion Monte Carlo,”
    Phys. Rev. Materials 3, 124414 (2019).
  57. B. C. Sales, J. Yan, W. R. Meier, A. D. Christianson, S. Okamoto, and M. A. McGuire,
    “Electronic, magnetic, and thermodynamic properties of the kagome layer compound FeSn,”
    Phys. Rev. Materials 3, 114203 (2019).
  58. S. Okamoto, T. Egami, and N. Nagaosa, “Critical spin fluctuation mechanism for the spin Hall effect,” Phys. Rev. Lett. 123, 196603 (2019).
  59. Q. Zhang, S. Okamoto, M. B. Stone, J. Liu, Y. Zhu, J. DiTusa, Z. Mao, and D. A. Tennant, “Influence of magnetism on Dirac semimetallic behavior in nonstoichiometric Sr1−yMn1−zSb2 (y~0.07, z ~0.02),” Phys. Rev. B 100, 205105 (2019).
  60. X. Zhang, Y. Zhang, S. Okamoto, and D. Xiao, “Thermal Hall Effect Induced by Magnon-Phonon Interactions,” Phys. Rev. Lett. 123, 167202 (2019).
  61. J.-Q. Yan, S. Okamoto, M. A. McGuire, A. F. May, R. J. McQueeney, and B. C. Sales, “Evolution of structural, magnetic and transport properties in MnBi2−xSbxTe4,” Phys. Rev. B, 100, 104409 (2019). This paper was selected as an Editors’ Suggestion.
  62. N. Mohanta, E. Dagotto, and S. Okamoto, “Topological Hall effect and emergent skyrmion crystal at manganite-iridate oxide interfaces,” Phys. Rev. B 100, 064429 (2019). This paper was selected as an Editors’ Suggestion.
  63. C. Eichstaedt, Y. Zhang, P. Laurell, S. Okamoto, A. G. Eguiluz, and T. Berlijn, “Deriving models for the Kitaev spin-liquid candidate material α-RuCl3 from first principles,” Phys. Rev. B 100, 075110 (2019).
  64. J.-Q. Yan, S. Okamoto, Y. Wu, Q. Zheng, H. D. Zhou, H. B. Cao, and M. A. McGuire, “Magnetic order in single crystals of Na3Co2SbO6 with a honeycomb arrangement of 3d7 Co2+ ions,” Phys. Rev. Materials 3, 074405 (2019).
Satoshi Okamoto, Materials Science and Technology Division, Oak Ridge National Laboratory
PO Box 2008 MS6114, Oak Ridge, TN 37831, USA
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