# Recent Publications (past 5 years)

__S. Okamoto__and N. Nagaosa, “Critical enhancement of the spin Hall effect by spin fluctuations,” npj Quantum Mater.**9**, 29 (2024).- A. O. Scheie, Y. Kamiya, Hao Zhang, Sangyun Lee, A. J. Woods, M. O. Ajeesh, 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, “Nonlinear magnons and exchange Hamiltonians of the delafossite proximate quantum spin liquid candidates KYbSe_{2}and NaYbSe_{2},” Phys. Rev. B**109**, 014425 (2024).**This paper was selected as an Editors’ Suggestion.** - 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). - 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. - 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). - T. A. Maier and
__S. Okamoto__, “Weak-coupling theory of neutron scattering as a probe of altermagnetism,” Phys. Rev. B**108**, L100402 (2023). - N. Mohanta, R. Soni,
__S. Okamoto__, and E. Dagotto, “Majorana corner states in the dice lattice,” Commun. Phys.**6**, 240 (2023). - 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 NiPS_{3},” Phys. Rev. B**108**, 104402 (2023). - S. Li, L.-H. Hu, R.-X. Zhang, and
__S. Okamoto__, “Topological superconductivity from forward phonon scatterings,” Commun. Phys.**6**, 235 (2023). - 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” KYb*Ch*_{2}(*Ch*= S, Se, Te) and*A*YbSe_{2}(*A*=Na, Rb), Phys. Rev. Research**5**, 033050 (2023). - 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)/Bi_{2}Te_{3}interface,” Adv. Mater.**35**, 2210940 (2023). - M. A. McGuire, E. M. Clements, Q. Zhang, and
__S. Okamoto__, “Double-layer Kagome Metals Pt_{3}Tl_{2}and Pt_{3}In_{2},” Crystals**13**, 833 (2023). - 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 SnBi_{2}Te_{4},” Phys. Rev. Materials**7**, 034802 (2023). - 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). - 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 Fe_{5}Si_{3}Single Crystals,” Adv. Phys. Res. 2200047 (2023). - 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). - R. S. Fishman, J. S. Gardner, and
__S. Okamoto__, “Orbital Angular Momentum of Magnons in Collinear Magnets,” Phys. Rev. Lett.**129**, 167202 (2022) - 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 (Fe_{1−x}Co_{x})Sn,” Phys. Rev. B**106**, 115141 (2022). __S. Okamoto__, N. Mohanta, E. Dagotto, and D. N. Sheng, “Topological flat bands in a kagome lattice multiorbital system,” Commun. Phys.**5**, 198 (2022).- 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). - 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). - S. Li and
__S. Okamoto__, “Thermal Hall effect in the Kitaev-Heisenberg system with spin-phonon coupling,” Phys. Rev. B**106**, 024413 (2022). - 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-RuCl_{3}from neutron data using machine learning,” Phys. Rev. Research**4**, L022061 (2022). - 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). - 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. - 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). - 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). - 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. - 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-Fe_{2}WO_{6}with strong spin-charge-lattice coupling,” Phys. Rev. B**104**, 134413 (2021). - 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). - 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 Co_{3}Sn_{2}S_{2},” Phys. Rev. Lett.**127**, 117201 (2021). - N. Mohanta,
__S. Okamoto__, and E. Dagotto, “Skyrmion control of MajoranasStates in planar Josephson junctions,” Commun. Phys.**4**, 163 (2021). - 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 Cs_{2}CoCl_{4},” Phys. Rev. Lett.**127**, 037201 (2021). - 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.** - 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-RuCl_{3},” Nat. Commun.**12**, 3513 (2021). - 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 SrIrO_{3}induced by magnetic proximity effect,” Nat. Commun.**12**, 3283 (2021). - S. Shen, Z. Li, Z. Tian, W. Luo,
__S. Okamoto__, and P. Yu, “Emergent Ferromagnetism with Fermi-liquid Behavior in Proton Intercalated CaRuO_{3},” Phys. Rev. X**11**, 021018 (2021). - 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 BaFe_{2}Al_{9},” Chem. Mater.**33**, 2855 (2021). - 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 WS_{2}/WSe_{2}moiré lattice,” Nat. Phys.**17**, 715 (2021). - A. R. Wildes,
__S. Okamoto__, and D. Xiao, “Search for nonreciprocal magnons in MnPS_{3},” Phys. Rev. B**103**, 024424 (2021). - 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). - 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). - 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). - 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 MnBi_{2−x}Sb_{x}Te_{4},” Phys. Rev. B**102**, 115402 (2020). - 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). - N. Mohanta,
__S. Okamoto__, and E. Dagotto, “Planar topological Hall effect from conical spin spirals,” Phys. Rev. B**102**, 064430 (2020). __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).- N. Mohanta, A. Taraphder, E. Dagotto, and
__S. Okamoto__, “Magnetic switching in Weyl semimetal-superconductor heterostructures,” Phys. Rev. B**102**, 064506 (2020). - 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 Ag_{2}CoO_{2},” Phys. Rev. B**102**, 024445 (2020). - 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). - 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 LaMnO_{3}/SrIrO_{3}heterostructures,” Sci. Adv.**6**, eaaz3902 (2020). - 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. - 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 SrCoO_{3}Thin Films,” Phys. Rev. X**10**, 021030 (2020). - J. A. Santana, J. T. Krogel,
__S. Okamoto__, and F. A. Reboredo, “Electron confinement and magnetism of (LaTiO_{3})_{1}/(SrTiO_{3})_{5}heterostructure: A diffusion quantum Monte Carlo study,”

J. Chem. Theory Comput.**16**, 643 (2020). - P. Laurell and
__S. Okamoto__, “Dynamical and thermal magnetic properties of the Kitaev spin liquid candidate α-RuCl_{3},” npj Quantum Mater.**5**, 2 (2020). - K. Saritas, J. T. Krogel,
__S. Okamoto__, H.-N. Lee, and F. A. Reboredo, “Structural, electronic, and magnetic properties of bulk and epitaxial LaCoO_{3}through diffusion Monte Carlo,”

Phys. Rev. Materials**3**, 124414 (2019). - 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). __S. Okamoto__, T. Egami, and N. Nagaosa, “Critical spin fluctuation mechanism for the spin Hall effect,” Phys. Rev. Lett.**123**, 196603 (2019).- 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 Sr_{1−y}Mn_{1−z}Sb_{2}(y~0.07, z ~0.02),” Phys. Rev. B**100**, 205105 (2019). - X. Zhang, Y. Zhang,
__S. Okamoto__, and D. Xiao, “Thermal Hall Effect Induced by Magnon-Phonon Interactions,” Phys. Rev. Lett.**123**, 167202 (2019). - 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 MnBi_{2−x}Sb_{x}Te_{4},” Phys. Rev. B,**100**, 104409 (2019).**This paper was selected as an Editors’ Suggestion.** - 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.** - C. Eichstaedt, Y. Zhang, P. Laurell,
__S. Okamoto__, A. G. Eguiluz, and T. Berlijn, “Deriving models for the Kitaev spin-liquid candidate material α-RuCl_{3}from first principles,” Phys. Rev. B**100**, 075110 (2019). - 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 Na_{3}Co_{2}SbO_{6}with a honeycomb arrangement of 3*d*^{7}Co^{2+}ions,” Phys. Rev. Materials**3**, 074405 (2019).