# Recent Publications (past 5 years)

- 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,” arXiv:2204.08066. - H. Idzushi, 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. - R. S. Fishman, J. S. Gardner, and
__S. Okamoto__, “Orbital Angular Momentum of Magnons in Collinear Magnets,” arXiv:2203.15677. - 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,” arXiv:2203.06655. - P. Laurell, A. Scheie, D. A. Tennant,
__S. Okamoto__, G. Alvarez, and E. Dagotto, “Magnetic excitations, non-classicality and quantum wake spin dynamics in the short-range Hubbard chain,” arXiv:2203.06332. - 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,” arXiv:2202.10715. - Q. Zhang, Y. Zhang, M. Matsuda, V. O Garlea, J. Yan, M. A. McGuire, D. A. Tennant, and
__S. Okamoto__, “Local symmetry breaking with correlation to ferromagnetism and the Weyl state in Co_{3}Sn_{2}S_{2},” arXiv:2202.08428. __S. Okamoto__, N. Mohanta, E. Dagotto, and D. N. Sheng, “Topological flat bands in a kagomé lattice multiorbital system,” arXiv:2201.11530.- S. Li and
__S. Okamoto__, “Thermal Hall Effect in the Kitaev-Heisenberg System with Spin-Phonon Coupling,” arXiv:2112.06107. - N. Mohanta, J. M. Ok, J. Zhang, H. Miao, E. Dagotto, H.-N. Lee, and
__S. Okamoto__, “Semi-Dirac and Weyl Ffermions 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). - N. Sivadas,
__S. Okamoto__, X. Xu, C. J. Fennie, and D. Xiao, “Stacking-dependent magnetism in bilayer CrI_{3},” Nano Lett.**18**, 7658 (2018). - E.-J. Guo, M. A. Roldan, X. Sang,
__S. Okamoto__, T. Charlton, H. Ambaye, H. N. Lee, and M. R. Fitzsimmons, “Influence of chemical composition and crystallographic orientation on the interfacial magnetism in BiFeO_{3}/La_{1−x}Sr_{x}MnO_{3}superlattices,” Phys. Rev. Materials**2**, 114404 (2018). - Y. Zhang,
__S. Okamoto__, and D. Xiao “Spin-Nernst effect in the paramagnetic regime of an antiferromagnetic insulator,” Phys. Rev. B**98**, 035424 (2018). - J. Sheng, F. Ye, C. Hoffmann, V. R. Cooper,
__S. Okamoto__, J. Terzic, H. Zheng, H. Zhao, and G. Cao, “Anisotropic antiferromagnetic order in the spin-orbit coupled trigonal-lattice Ca_{2}Sr_{2}IrO_{6},” Phys. Rev. B**97**, 235116 (2018). - S. Tang, R. S. Fishman,
__S. Okamoto__, J. Yi, Q. Zou, M. Fu, A.-P. Li, D. Mandrus, and Z. Gai, “Tuning magnetic soliton phase via dimensional confinement in exfoliated 2D Cr_{1/3}NbS_{2}thin flakes,” Nano Lett.**18**, 4023 (2018). __S. Okamoto__, G. Alvarez, E. Dagotto, and T. Tohyama, “Accuracy of the microcanonical Lanczos method to compute real-frequency dynamical spectral functions of quantum models at finite temperatures,” Phys. Rev. E**97**, 043308 (2018).__S. Okamoto__and D. Xiao, “Transition-metal oxide (111) bilayers,” J. Phys. Soc. Jpn.**87**, 041006 (2018).**This paper is published as a contribution to Special Topics: New ab initio Approaches to Exploring Emergent Phenomena in Quantum Matter.**- J. H. Lee, J. Ma, S. E. Hahn, H. B. Cao, M. Lee, T. Hong, H.-J. Lee, M. S. Yeom,
__S. Okamoto__, H. D. Zhou, M. Matsuda, and R. S. Fishman, “Magnetic frustration driven by itinerancy in spinel CoV_{2}O_{4},” Sci. Rep.**7**, 17129 (2017) __S. Okamoto__, M. Ochi, R. Arita, J.-Q. Yan, and N. Trivedi, “Localized-itinerant dichotomy and unconventional magnetism in SrRu_{2}O_{6},” Sci. Rep.**7**, 11742 (2017).- R. S. Fishman and
__S. Okamoto__, “Spiral spin state with open boundary conditions in a magnetic field,” Phys. Rev. B**96**, 014439 (2017). __S. Okamoto__, J. Nichols, C. Sohn, S. Y. Kim, T. W. Noh, and H. N. Lee “Charge Transfer in iridate-manganite superlattices,” Nano Lett.**17**, 2126 (2017).