Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Onoda, Masaru"'
Autor:
Onoda, Masaru
Publikováno v:
Phys. Rev. B 106, 245409 (2022)
We derive the analytical solutions of surface states in a series of lattice models for three-dimensional topological insulators and their nontopological counterparts based on an ansatz. A restriction on the spin-flip matrices in nearest-neighbor hopp
Externí odkaz:
http://arxiv.org/abs/2208.10381
Publikováno v:
Optics Express, Vol. 23, Issue 2, pp. 823-832 (2015)
We report an experimental study of generation of photo-induced voltage in nano-porous gold (NPG) thin film under the radiation of obliquely incident nanosecond laser light in visible regions. For s- polarized light, negative voltage is observed along
Externí odkaz:
http://arxiv.org/abs/1411.5903
Autor:
Maryenko, Denis, Falson, Joseph, Kozuka, Yusuke, Tsukazaki, Atsushi, Onoda, Masaru, Aoki, Hideo, Kawasaki, Masashi
The sequence of prominent fractional quantum Hall states up to $\nu$=5/11 around $\nu$=1/2 in a high mobility two-dimensional electron system confined at oxide heterointerface (ZnO) is analyzed in terms of the composite fermion model. The temperature
Externí odkaz:
http://arxiv.org/abs/1203.3349
Autor:
Ochiai, Tetsuyuki, Onoda, Masaru
This paper presents a theoretical analysis on bulk and edge states in honeycomb lattice photonic crystals with and without time-reversal and/or space-inversion symmetries. Multiple Dirac cones are found in the photonic band structure and the mass gap
Externí odkaz:
http://arxiv.org/abs/0905.4149
Autor:
Onoda, Masaru, Ochiai, Tetsuyuki
Based on an optical analogy of spintronics, the generation of optical tornadoes is theoretically investigated in two-dimensional photonic crystals without space-inversion symmetry. We address its close relation to the Berry curvature in crystal momen
Externí odkaz:
http://arxiv.org/abs/0810.1101
Publikováno v:
Phys.Rev.B76:205304,2007
An effective theory is constructed for analyzing a generic phase transition between the quantum spin Hall and the insulator phases. Occurrence of degeneracies due to closing of the gap at the transition are carefully elucidated. For systems without i
Externí odkaz:
http://arxiv.org/abs/0705.3696
The dynamics of the total magnetization in metallic ferromagnet is studied theoretically taking into account the relativistic spin-orbit interaction. It is found that its quantum dynamics is seriously influenced by the band crossings near the Fermi e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702379
Publikováno v:
Phys.Rev.E74:066610,2006
We construct a semiclassical theory for propagation of an optical wavepacket in non-conducting media with periodic structures of dielectric permittivity and magnetic permeability, i.e., non-conducting photonic crystals. We employ a quantum-mechanical
Externí odkaz:
http://arxiv.org/abs/physics/0606178
Publikováno v:
Phys. Rev. Lett. 98, 076802 (2007)
Localization problem of electronic states in a two-dimensional quantum spin Hall system (QSH - a symplectic model with a non-trivial topological structure) is studied by the transfer matrix method. The phase diagram in the plane of energy and disorde
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605510
Autor:
Onoda, Masaru, Nagaosa, Naoto
Publikováno v:
Phys. Rev. B 74, 121101(R) (2006)
The interplay between incommensurate (IC) and random potentials is studied in a two-dimensional symplectic model with the focus on localization/delocalization problem. With the IC potential only, there appear wavefunctions localized along the IC wave
Externí odkaz:
http://arxiv.org/abs/cond-mat/0604120