Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Vahedi, J."'
Publikováno v:
Phys. Rev. B 106, 235132 (2022)
We study the effects of disorder in a one-dimensional model of $\mathbb{Z}_{3}$ Fock parafermions which can be viewed as a generalization of the prototypical Kitaev chain. Exact diagonalization is employed to determine level statistics, participation
Externí odkaz:
http://arxiv.org/abs/2210.02901
Publikováno v:
Sci Rep 12, 17991 (2022)
The ground state phase diagram of the dimerized spin-1/2 XX honeycomb model in presence of a transverse magnetic field (TF) is known. With the absence of the magnetic field, two quantum phases, namely, the N\'eel and the dimerized phases have been id
Externí odkaz:
http://arxiv.org/abs/2204.07708
Publikováno v:
In Physica A: Statistical Mechanics and its Applications 1 June 2023 619
Publikováno v:
Chaos: An Interdisciplinary Journal of Nonlinear Science 26, 103106 (2016)
Using one-dimensional spin-1/2 systems as prototypes of quantum many-body systems, we study the emergence of quantum chaos. The main purpose of this work is to answer the following question: how does the spin-orbit interaction, as a pure quantum inte
Externí odkaz:
http://arxiv.org/abs/1608.02138
Publikováno v:
Journal of Low Temperature Physics 186, 217 (2017)
We consider an alternating Heisenberg spin-$1/2$ antiferromagnetic-ferromagnetic ($AF-F$) chain with the space modulated dominant antiferromagnetic exchange and anisotropic ferromagnetic coupling (tetrameric spin-$1/2$ chain). The zero-temperature ef
Externí odkaz:
http://arxiv.org/abs/1608.02145
Publikováno v:
Indian Journal of Physics 89, 347 (2015)
Effects of impurity on the spin-dependent transport in a single wall carbon nanotube spin-valve, as ferromagnetic electrode/carbon nanotube/ferromagnetic electrode model junction is numerically investigated. Using a generalized Green's function metho
Externí odkaz:
http://arxiv.org/abs/1408.3675
Publikováno v:
Physica A: Statistical Mechanics and its Applications, 416, 321 (2014)
We have considered the 1D spin-1/2 Ising model with added Dzyaloshinskii-Moriya (DM) interaction and presence of a uniform magnetic field. Using the mean-field fermionization approach the energy spectrum in an infinite chain is obtained. The quantum
Externí odkaz:
http://arxiv.org/abs/1408.1186
Publikováno v:
In Physica A: Statistical Mechanics and its Applications 15 February 2019 516:502-508
Publikováno v:
Gravitation and Cosmology 18, 211 (2012)
The scattering cross section of electrons in noble gas atoms exhibits a minimum value at electron energies of approximately 1eV. This is the Ramsauer-Townsend effect. In this letter, we study the Ramsauer-Townsend effect in the framework of the Gener
Externí odkaz:
http://arxiv.org/abs/1208.1660
Publikováno v:
Physica A:Statistical Mechanics and its Applications, 392, 702 (2013)
We have considered the 1D dimerized frustrated antiferromagnetic (ferromagnetic) Heisenberg model with arbitrary spin $S$. The exact classical magnetic phase diagram at zero temperature is determined using the LK cluster method. Cluster method result
Externí odkaz:
http://arxiv.org/abs/1204.1593