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Solomon Owerre

Solomon Owerre's picture

Area of Research:
Phone: x7520

Research Interests

My research interest encompasses magnetically frustrated systems such as quantum spin liquids and quantum spin ice, bosonic analogs of topological phases of matter, and bosonic analogs of Floquet topological insulators. I also have a keen interest in quantum information, quantum field theory, and renormalization groups. In the past years, I have been interested in the understanding of frustrated magnets, in particular quantum spin ice on the kagome and triangular lattice. Previously, I have worked on vacuum decay and macroscopic quantum tunneling of spins using the instanton approach.

Recently, my research have focused on topological phases of matter. This field of research has been mainly dominated by electronic systems e.g. topological insulators and semimetals. In fact, the theoretical framework has reached a point of saturation, while experiments are now looking for new materials that possess the topological features. Therefore, it is interesting to extend the topological concept to other quasi-particles other than electrons.

In this respect, the field of topological band theory in bosonic quasiparticles (e.g. magnons, phonons, and photons) has now come into focus, but still in its infancy. My recent research have focused on the development of topological concepts in quantum magnetism using magnons and spinons as the primary quasiparticles. Below, I will outline selected progress I have made in my research.

Awards

  • Best Ph.D. Student Awards: University of Montreal. Laboratoire CRM PhysMath prize and DTP/WITP prize
  • Perimeter International Scholar Awards: Perimeter Institute

Recent Publications

  • S. A. Owerre. Weyl Magnons in Noncoplanar Stacked Kagome Antiferromagnets. Phys. Rev. Lett. (under review). arXiv: 1708.04240.
  • S. A. Owerre. Magnetic Order in Laser-Irradiated Kagome Antiferromagnets. OPEN ACCESS: J. Phys. Commun. (2017). (accepted). arXiv: 1707.01502.
  • S. A. Owerre. Floquet Topological Magnons. OPEN ACCESS: J. Phys. Commun. (2017). (accepted). arXiv: 1705.04694.
  • S. A. Owerre. Topological Magnon Bands and Unconventional Thermal Hall Effect on the Frustrated Honeycomb and Bilayer Triangular Lattice. J. Phys.: Cond. Mat. 29, 385801 (2017). arXiv: 1705.08892.
  • S. A. Owerre. Dirac Magnon Nodal Loops in Quasi-2D Quantum Magnets. OPEN ACCESS: Scientific Reports 7, 6931 (2017). arXiv: 1703.07783.
  • S. A. Owerre. Topological Magnetic Excitations on the Distorted Kagome Antiferromagnets: Applications to Volborthite, Vesignieite, and Edwardsite. EPL (Europhys. Lett.) 117, 37006 (2017). arXiv: 1701.05199.
  • S. A. Owerre. Magnonic Analogs of Topological Dirac Semimetals. OPEN ACCESS: J. Phys. Commun. (2017). (accepted). arXiv: 1610.08869.
  • S. A. Owerre. Noncollinear Antiferromagnetic Haldane Magnon Insulator. J. Appl. Phys. 121, 223904 (2017). arXiv: 1608.00545.
  • S. A. Owerre. Topological Thermal Hall Effect in Frustrated Kagome Antiferromagnets. Phys. Rev. B 95, 014422 (2017). arXiv: 1608.04561.
  • S. A. Owerre. Magnon Hall Effect without Dzyaloshinskii-Moriya Interaction. IOPSELECT OPEN ACCESS: J. Phys.: Cond. Mat. 29, 03LT01 (2017). arXiv: 1608.08605. For more information on this paper, see https://jphysplus.iop.org/2017/07/31/topological-magnon-bands-without-dzyaloshinkii-moriya-interaction/
  • S. A. Owerre. Magnon edge states in hardcore-Bose-Hubbard model. J. Phys.: Condens. Matter 28, 436003 (2016); arXiv: 1603.07989.
  • S. A. Owerre. Chirality-induced magnon transport in AA-stacked bilayer honeycomb quantum magnets. J. Phys.: Condens. Matter 28 (2016) 47LT02 (Letters); arXiv: 1605.07971.
  • S. A. Owerre. Magnon Hall effect in AB-stacked bilayer honeycomb quantum magnets. Phys. Rev. B 94, 094405 (2016); arXiv: 1604.05292.
  • S. A. Owerre. Topological honeycomb magnon Hall effect: A calculation of thermal Hall conductivity of magnetic spin excitations. J. Appl. Phys. 120, 043903 (2016); arXiv: 1603.04331.
  • S. A. Owerre. A first theoretical realization of honeycomb topological magnon insulator. J. Phys.: Condens. Matter 28, 386001 (2016). arXiv: 1602.06772. IOPSELECT. LabTalk can be found here http://iopscience.iop.org/journal/0953-8984/labtalk/article/65866.
  • S. A. Owerre. Chiral magnetic conductivity and surface states of Weyl semimetals in topological insulator ultra-thin film multilayer. J. Phys.: Condens. Matter 28, 235501 (2016); arXiv: 1602.00618.
  • S. A. Owerre, A. A. Burkov, and R. G. Melko. A Large-S Study of Quantum Kagome Ice. Phys. Rev. B 93, 144402 (2016); arXiv: 1512.03930.
  • S. A. Owerre. Ground state properties of quantum triangular ice. Phys. Rev. B 93, 094436 (2016); arXiv: 1511.01843