2. | M. Kaczor, I. Tralle, P. Jakubczyk, Stefan Stagraczyński, L. Chotorlishvili Switching of the information backflow between a helical spin system and non-Markovian bath Annals of Physics, 442 , pp. 168918, 2022, ISSN: 0003-4916. Abstract | Links | BibTeX @article{Kaczor2022,
title = {Switching of the information backflow between a helical spin system and non-Markovian bath},
author = {M. Kaczor and I. Tralle and P. Jakubczyk and Stefan Stagraczyński and L. Chotorlishvili},
url = {https://www.sciencedirect.com/science/article/pii/S0003491622000999?via%3Dihub},
doi = {10.1016/j.aop.2022.168918},
issn = {0003-4916},
year = {2022},
date = {2022-07-01},
journal = {Annals of Physics},
volume = {442},
pages = {168918},
abstract = {The dissipative dynamics of the spin chain coupled to the non-Markovian magnonic reservoir was studied. The chirality of the chain is formed due to the magnetoelectric coupling. We explored the sign of the trace distance derivative and found the alternating positive/negative periods in system’s time evolution. The negative sign is associated with the flow of information from the system to the bath and decrease in states distinguishability, while the positive sign is related to the flow of the information in the opposite direction and increase in distinguishability. We found the distinct effect of the applied electric and magnetic fields. While the Dzyaloshinskii–Moriya interaction and external electric field lead to reshuffling of the periods, the applied magnetic field leads to the swift positive–negative transitions. Thus, in the helical quantum rings coupled to the non-Markovian magnonic baths, it is possible to control the directions of information flow through the external fields.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The dissipative dynamics of the spin chain coupled to the non-Markovian magnonic reservoir was studied. The chirality of the chain is formed due to the magnetoelectric coupling. We explored the sign of the trace distance derivative and found the alternating positive/negative periods in system’s time evolution. The negative sign is associated with the flow of information from the system to the bath and decrease in states distinguishability, while the positive sign is related to the flow of the information in the opposite direction and increase in distinguishability. We found the distinct effect of the applied electric and magnetic fields. While the Dzyaloshinskii–Moriya interaction and external electric field lead to reshuffling of the periods, the applied magnetic field leads to the swift positive–negative transitions. Thus, in the helical quantum rings coupled to the non-Markovian magnonic baths, it is possible to control the directions of information flow through the external fields. |
1. | Mir Ali Jafari, Małgorzata Wawrzyniak-Adamczewska, Stefan Stagraczyński, Anna Dyrdał, Józef Barnaś Spin valve effect in two-dimensional VSe2 system J. Magn. Magn. Mater., 548 , pp. 168921, 2022, ISSN: 0304-8853. Abstract | Links | BibTeX @article{Jafari2022,
title = {Spin valve effect in two-dimensional VSe2 system},
author = {Mir Ali Jafari and Małgorzata Wawrzyniak-Adamczewska and Stefan Stagraczyński and Anna Dyrdał and Józef Barnaś},
url = {https://www.sciencedirect.com/science/article/pii/S0304885321011215?via%3Dihub},
doi = {10.1016/j.jmmm.2021.168921},
issn = {0304-8853},
year = {2022},
date = {2022-03-15},
journal = {J. Magn. Magn. Mater.},
volume = {548},
pages = {168921},
abstract = {Vanadium based dichalcogenides, VSe2, are two-dimensional materials in which magnetic Vanadium atoms are arranged in a hexagonal lattice and are coupled ferromagnetically within the plane. However, adjacent atomic planes are coupled antiferromagnetically. This provides new and interesting opportunities for application in spintronics and data storage and processing technologies. A spin valve magnetoresistance may be achieved when magnetic moments of both atomic planes are driven to parallel alignment by an external magnetic field. The resistance change associated with the transition from antiparallel to parallel configuration is qualitatively similar to that observed in artificially layered metallic magnetic structures. Detailed electronic structure of VSe2 was obtained from DFT calculations. Then, the ballistic spin-valve magnetoresistance was determined within the Landauer formalism. In addition, we also analyze thermal and thermoelectric properties. Both phases of VSe2, denoted as H and T, are considered.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Vanadium based dichalcogenides, VSe2, are two-dimensional materials in which magnetic Vanadium atoms are arranged in a hexagonal lattice and are coupled ferromagnetically within the plane. However, adjacent atomic planes are coupled antiferromagnetically. This provides new and interesting opportunities for application in spintronics and data storage and processing technologies. A spin valve magnetoresistance may be achieved when magnetic moments of both atomic planes are driven to parallel alignment by an external magnetic field. The resistance change associated with the transition from antiparallel to parallel configuration is qualitatively similar to that observed in artificially layered metallic magnetic structures. Detailed electronic structure of VSe2 was obtained from DFT calculations. Then, the ballistic spin-valve magnetoresistance was determined within the Landauer formalism. In addition, we also analyze thermal and thermoelectric properties. Both phases of VSe2, denoted as H and T, are considered. |