- S. Calder, L. Li,
__S. Okamoto__, Y. Choi, R. Mukherjee, D. Haskel, and D. Mandrus, “Spin-orbit driven magnetic insulating state with J_{eff}=1/2 character in a 4*d*oxide,” Phys. Rev. B**92**, 180413(R) (2015). - H. Dixit, J. H. Lee, J. T. Krogel,
__S. Okamoto__, and V. R. Cooper, “Stabilization of weak ferromagnetism by strong magnetic response to epitaxial strain in multiferroic BiFeO_{3},” Sci. Rep.**5**, 12969 (2015). - N. Sivadas, M. W. Daniels, R. H. Swendsen,
__S. Okamoto__, and D. Xiao, “Magnetic ground state of semiconducting transition metal trichalcogenide monolayers,” Phys. Rev. B**91**, 235425 (2015). - J. H. You, J. H. Lee,
__S. Okamoto__, V. Cooper, and H. N. Lee, “Strain effects on the electronic properties in δ-doped oxide superlattices,” J. Phys. D: Appl. Phys.**48**, 085303 (2015). - D. W. Jeong, W. S. Choi,
__S. Okamoto__, J.-Y. Kim, K. W. Kim, S. J. Moon, D.-Y. Cho, H. N. Lee, and T. W. Noh, “Dimensionality Control of*d*-orbital Occupation in Oxide Superlattices,” Sci. Rep.**4**, 6124 (2014). - V. R. Cooper, S. S. A. Seo, S. Lee, J. S. Kim, W. S. Choi,
__S. Okamoto__, H.-N. Lee, “Transparent conducting oxides: A δ-doped superlattice approach,” Sci. Rep.**4**, 6021 (2014). - F. A. Cuellar, Y. H. Liu, J. Salafranca, N. Nemes, E. Iborra, G. Sanchez-Santolino, M. Varela, M. Garcia Hernandez,
J. W. Freeland, M. Zhernenkov, M. R. Fitzsimmons,
__S. Okamoto__, S. J. Pennycook, M. Bibes, A. Barthélémy, S. G. E. te Velthuis, Z. Sefrioui, C. Leon, and J. Santamaria, “Reversible electric-field control of magnetization at oxide interfaces,” Nat. Commun.**5**, 4215 (2014). - M. Sekino,
__S. Okamoto__, W. Koshibae, M. Mori, S. Maekawa, “Temperature Dependence of Thermopower in Strongly Correlated Multiorbital Systems,” Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013) [JPS Conf. Proc.**3**, 017014 (2014)]. __S. Okamoto__, W. Zhu, Y. Nomura, R. Arita, D. Xiao, and N. Nagaosa, “Correlation effects in (111) bilayers of perovskite transition-metal oxides,” Phys. Rev. B**89**, 195121 (2014).- S. Calder, G.-X. Cao,
__S. Okamoto__, J. W. Kim, V. R. Cooper, Z. Gai, B. C. Sales, M. D. Lumsden, D. Mandrus, and A. D. Christianson, “*J*=1/2 Mott spin-orbit insulating state close to the cubic limit in Ca_{eff}_{4}IrO_{6},” Phys. Rev. B**89**, 081104(R) (2014). - C. Mitra, R. S. Fishman,
__S. Okamoto__, H.-N. Lee, and F. A. Reboredo, “Ground-state and spin-wave dynamics in Brownmillerite SrCoO_{2.5}—a combined hybrid functional and LSDA+*U*study,” J. Phys.: Condens. Matter**26**, 036004 (2014). - Q. Li, G.-X. Cao,
__S. Okamoto__, J. Yi, W. Lin, B. C. Sales, J. Yan, R. Arita, J. Kuneš, A. V. Kozhevnikov, A. G. Eguiluz, M. Imada, Z. Gai, M. Pan, D. G. Mandrus, “Microscopic and Spectroscopic Evidence for a Slater Metal-Insulator Transition in Sr_{2}IrO_{4},” Sci. Rep.**3**, 3073 (2013). - D. Yi, J. Liu,
__S. Okamoto__, S. Jagannatha, Y.-C. Chen, P. Yu, Y.-H. Chu, E. Arenholz, and R. Ramesh, “Tuning the Competition between Ferromagnetism and Antiferromagnetism in a Half-Doped Manganite through Magnetoelectric Coupling,” Phys. Rev. Lett.**111**, 127601 (2013). - E. Sakai, M. Tamamitsu, K. Yoshimatsu,
__S. Okamoto__, K. Horiba, M. Oshima, and H. Kumigashira, “Gradual localization of Ni 3*d*states in LaNiO_{3}ultrathin films induced by dimensional crossover,” Phys. Rev. B**87**, 075132 (2013). __S. Okamoto__, “Global phase diagram of a doped Kitaev-Heisenberg model,” Phys. Rev. B**87**, 064508 (2013).- E. Assmann, P. Blaha, R. Laskowski, K. Held,
__S. Okamoto__, and G. Sangiovanni, “Oxide Heterostructures for Efficient Solar Cells,” Phys. Rev. Lett.**110**, 078701 (2013).**This paper is spotlighted as a Synopsis in Physics: Building Better Solar Cells, Layer by Layer** __S. Okamoto__, “Doped Mott insulators in (111) bilayers of perovskite transition-metal oxides with the strong spin-orbit coupling,” Phys. Rev. Lett.**110**, 066403 (2013).__S. Okamoto__and N. Furukawa, “Spontaneous fourfold-symmetry breaking driven by electron-lattice coupling and strong correlations in high-*T*cuprates,” Phys. Rev. B_{c}**86**, 094522 (2012).__S. Okamoto__, “Strongly-Correlated Heterostructures,” in Multifunctional Oxide Heterostructures, Eds. E. Y. Tsymbal, E. R. A. Dagotto, C.-B. Eom, and R. Ramesh (Oxford University Press, 2012), p.214-253, ISBN: 978-0-19-958412-3.- D. Xiao, W. Zhu, Y. Ran, N. Nagaosa, and
__S. Okamoto__, “Interface engineering of quantum Hall effects in digital transition-metal oxide heterostructures,” Nat. Commun.**2**, 596 (2011). __S. Okamoto__, “Anomalous mass enhancement in strongly correlated quantum wells,” Phys. Rev. B**84**, 201305(R) (2011).- K.-Y. Yang, W. Zhu, D. Xiao,
__S. Okamoto__, Z. Wang, and Y. Ran, “Possible interaction driven topological phases in (111) bilayers of LaNiO_{3},” Phys. Rev. B**84**, 201104(R) (2011). - M. Matsuo,
__S. Okamoto__, W. Koshibae, M. Mori, and S. Maekawa, “Non-monotonic temperature dependence of thermopower in strongly correlated electron systems,” Phys. Rev. B**84**, 153107 (2011). - C.-W. Lee, R. K. Behera,
__S. Okamoto__, R. Devanathan, E. D. Wachsman, S. R. Phillpot, and S. B. Sinnott, “Stabilization Mechanisms of LaFeO_{3}(010) Surfaces Determined with First Principles Calculations,” J. Am. Ceram. Soc.,**94**[6] 1931-1939 (2011). - J. Liu,
__S. Okamoto__, M. van Veenendaal, M. Kareev, B. Gray, P. Ryan, J. W. Freeland, and J. Chakhalian, “Quantum confinement of Mott electrons in ultrathin LaNiO_{3}/LaAlO_{3}superlattices,” Phys. Rev. B**83**, 161102(R) (2011).**This paper was selected as an Editors' Suggestion.** - F. Y. Bruno, J. Garcia-Barriocanal, M. Varela. N. M. Nemes, P. Thakur, J. C. Cezar, N. B. Brookes, A. Rivera-Calzada, M. Garcia-Hernandez,
C. Leon,
__S. Okamoto__, S. J. Pennycook, J. Santamaria, “Electronic and Magnetic Reconstructions in La_{0.7}Sr_{0.3}MnO_{3}/SrTiO_{3}Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface,” Phys. Rev. Lett.**106**, 147205 (2011). - J. Salafranca and
__S. Okamoto__, “Unconventional proximity effect and inverse spin-switch behavior in a model manganite-cuprate-manganite trilayer system,” Phys. Rev. Lett.**105**, 256804 (2010). __S. Okamoto__, D. Sénéchal, M. Civelli, and A.-M. Tremblay, “Dynamical electronic nematicity from Mott physics,” Phys. Rev. B**82**, 180511(R) (2010).**This paper was selected as an Editors' Suggestion.**- J. Garcia-Barriocanal, J. C. Cezar, F. Y. Bruno, P. Thakur, N. B. Brookes, C. Utfeld, A. Rivera-Calzada,
S. R. Giblin, J. W. Taylor, J. A. Duffy, S. B. Dugdale, T. Nakamura, K. Kodama, C. Leon,
__S. Okamoto__, and J. Santamaria, “Spin and Orbital Ti Magnetism at LaMnO_{3}/SrTiO_{3}Interfaces,” Nat. Commun.**1**, 82 (2010). - A. Y. Borisevich, H. J. Chang, M. Huijben, M. P. Oxley,
__S. Okamoto__, M. K. Niranjan, J. D. Burton, E.Y. Tsymbal, Y. H. Chu, P. Yu, R. Ramesh, S. V. Kalinin, and S. J. Pennycook, “Suppression of Octahedral Tilts and Associated Changes in Electronic Properties at Epitaxial Oxide Heterostructure Interfaces,” Phys. Rev. Lett.**105**, 087204 (2010). __S. Okamoto__, “Magnetic interaction at an interface between manganite and other transition-metal oxides,” Phys. Rev. B**82**, 024427 (2010).- P. Yu, J.-S. Lee,
__S. Okamoto__, M. D. Rossell, M. Huijben, C.-H. Yang, Q. He, J. X. Zhang, S.Y. Yang, M. J. Lee, Q. M. Ramasse, R. Erni, Y.-H. Chu, D. A. Arena, C.-C. Kao, L.W. Martin, and R. Ramesh, “Interface Ferromagnetism and Orbital Reconstruction in BiFeO_{3}-La_{0.7}Sr_{0.3}MnO_{3}Heterostructure,” Phys. Rev. Lett.**105**, 027201 (2010). __S. Okamoto__and T. A. Maier, “Microscopic Inhomogeneity and Superconducting Properties of a Two-dimensional Hubbard Model for High-*T*Cuprates,” Phys. Rev. B_{c}**81**, 214525 (2010).- K. Yoshimatsu, T. Okabe, H. Kumigashira,
__S. Okamoto__, S. Aizaki, A. Fujimori, and M. Oshima, “Dimensional-Crossover-Driven Metal-Insulator Transition in SrVO_{3}Ultrathin Films,” Phys. Rev. Lett.**104**, 147601 (2010). - R. S. Fishman and
__S. Okamoto__, “Noncollinear magnetic phases of a triangular-lattice antiferromagnet and of doped CuFeO_{2},” Phys. Rev. B**81**, 020402(R) (2010).