Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Takayoshi, Shintaro"'
We theoretically study nonlinear processes driven by a DC spin-electric field in the antiferromagnetic spin-1 Heisenberg model starting from the ground state in the Haldane phase. The DC spin-electric field generates finite spin current and accumulat
Externí odkaz:
http://arxiv.org/abs/2409.09578
We show how many-body effects associated with background spin dynamics control the high-harmonic generation (HHG) in Mott insulators by analyzing the two-leg ladder Hubbard model. Spin dynamics activated by the interchain hopping $t_y$ drastically mo
Externí odkaz:
http://arxiv.org/abs/2407.01936
Autor:
Takayoshi, Shintaro, Faure, Quentin, Simonet, Virginie, Grenier, Béatrice, Petit, Sylvain, Ollivier, Jacques, Lejay, Pascal, Giamarchi, Thierry
Publikováno v:
Phys. Rev. Research 5, 023205 (2023)
By combining inelastic neutron scattering and numerical simulations, we study the quasi-one dimensional Ising-like quantum antiferromagnet BaCo$_{2}$V$_{2}$O$_{8}$ in a longitudinal magnetic field applied along the magnetic anisotropy axis, which is
Externí odkaz:
http://arxiv.org/abs/2302.03833
Publikováno v:
Phys. Rev. Lett. 130, 106501 (2023)
We show that effectively cold metastable states in one-dimensional photo-doped Mott insulators described by the extended Hubbard model exhibit spin, charge and $\eta$-spin separation. Namely, their wave functions in the large on-site Coulomb interact
Externí odkaz:
http://arxiv.org/abs/2212.06263
Publikováno v:
Eur. Phys. J. D 76, 213 (2022)
We study the transport properties of a one dimensional quantum system with disorder. We numerically compute the frequency dependence of the conductivity of a fermionic chain with nearest neighbor interaction and a random chemical potential by using t
Externí odkaz:
http://arxiv.org/abs/2206.00023
Publikováno v:
Phys. Rev. B 105, 195126 (2022)
We investigate second-order magnetic responses of quantum magnets against ac magnetic fields. We focus on the case where the $z$ component of the spin is conserved in the unperturbed Hamiltonian and the driving field is applied in the $xy$ plane. We
Externí odkaz:
http://arxiv.org/abs/2203.02145
Solitonic excitations in the Ising anisotropic chain BaCo2V2O8 under large transverse magnetic field
Autor:
Faure, Quentin, Takayoshi, Shintaro, Grenier, Béatrice, Petit, Sylvain, Raymond, Stéphane, Boehm, Martin, Lejay, Pascal, Giamarchi, Thierry, Simonet, Virginie
We study the dynamics of the quasi-one-dimensional Ising-Heisenberg antiferromagnet BaCo2V2O8 under a transverse magnetic field. Combining inelastic neutron scattering experiments and theoretical analyses by field theories and numerical simulations,
Externí odkaz:
http://arxiv.org/abs/2107.02487
Autor:
Murakami, Yuta, Takayoshi, Shintaro, Kaneko, Tatsuya, Sun, Zhiyuan, Golež, Denis, Millis, Andrew J., Werner, Philipp
Publikováno v:
Communications Physics 5, 23 (2022)
Photo-excited strongly correlated systems can exhibit intriguing non-thermal phases, but the theoretical investigation of them poses significant challenges. In this work, we introduce a generalized Gibbs ensemble type description for long-lived photo
Externí odkaz:
http://arxiv.org/abs/2105.13560
We present a theory of Mott memristors whose working principle is the non-linear carrier avalanche multiplication in Mott insulators subject to strong electric fields. The internal state of the memristor, which determines its resistance, is encoded i
Externí odkaz:
http://arxiv.org/abs/2104.00559
Publikováno v:
Phys. Rev. B 103, 035110 (2021)
We study high-harmonic generation (HHG) in the one-dimensional Hubbard model in order to understand its relation to elementary excitations as well as the similarities and differences to semiconductors. The simulations are based on the infinite time-e
Externí odkaz:
http://arxiv.org/abs/2010.13255