The effects of thermal and correlated noise on magnons in a quantum ferromagnet
Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole
Institute of Physics (IOP)
Published 2018
Institute of Physics (IOP)
Published 2018
| Publication Date: |
2018-09-19
|
|---|---|
| Publisher: |
Institute of Physics (IOP)
|
| Electronic ISSN: |
1367-2630
|
| Topics: |
Physics
|
| Published by: |
| _version_ | 1839208187824177152 |
|---|---|
| autor | Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole |
| beschreibung | The dynamics and thermal equilibrium of spin waves (magnons) in a quantum ferromagnet as well as the macroscopic magnetisation are investigated. Thermal noise due to an interaction with lattice phonons and the effects of spatial correlations in the noise are considered. We first present a Markovian master equation approach with analytical solutions for any homogeneous spatial correlation function of the noise. We find that spatially correlated noise increases the decay rate of magnons with low wave vectors to their thermal equilibrium, which also leads to a faster decay of the ferromagnet’s magnetisation to its steady-state value. For long correlation lengths and higher temperature we find that additionally there is a component of the magnetisation which decays very slowly, due to a reduced decay rate of fast magnons. This effect could be useful for fast and noise-protected quantum or classical information transfer and magnonics. We further compare ferromagnetic and antiferromag... |
| citation_standardnr | 6334283 |
| datenlieferant | ipn_articles |
| feed_id | 3941 |
| feed_publisher | Institute of Physics (IOP) |
| feed_publisher_url | http://www.iop.org/ |
| insertion_date | 2018-09-19 |
| journaleissn | 1367-2630 |
| publikationsjahr_anzeige | 2018 |
| publikationsjahr_facette | 2018 |
| publikationsjahr_intervall | 7984:2015-2019 |
| publikationsjahr_sort | 2018 |
| publisher | Institute of Physics (IOP) |
| quelle | New Journal of Physics |
| relation | http://iopscience.iop.org/1367-2630/20/9/093017 |
| search_space | articles |
| shingle_author_1 | Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole |
| shingle_author_2 | Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole |
| shingle_author_3 | Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole |
| shingle_author_4 | Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole |
| shingle_catch_all_1 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet The dynamics and thermal equilibrium of spin waves (magnons) in a quantum ferromagnet as well as the macroscopic magnetisation are investigated. Thermal noise due to an interaction with lattice phonons and the effects of spatial correlations in the noise are considered. We first present a Markovian master equation approach with analytical solutions for any homogeneous spatial correlation function of the noise. We find that spatially correlated noise increases the decay rate of magnons with low wave vectors to their thermal equilibrium, which also leads to a faster decay of the ferromagnet’s magnetisation to its steady-state value. For long correlation lengths and higher temperature we find that additionally there is a component of the magnetisation which decays very slowly, due to a reduced decay rate of fast magnons. This effect could be useful for fast and noise-protected quantum or classical information transfer and magnonics. We further compare ferromagnetic and antiferromag... Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole Institute of Physics (IOP) 1367-2630 13672630 |
| shingle_catch_all_2 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet The dynamics and thermal equilibrium of spin waves (magnons) in a quantum ferromagnet as well as the macroscopic magnetisation are investigated. Thermal noise due to an interaction with lattice phonons and the effects of spatial correlations in the noise are considered. We first present a Markovian master equation approach with analytical solutions for any homogeneous spatial correlation function of the noise. We find that spatially correlated noise increases the decay rate of magnons with low wave vectors to their thermal equilibrium, which also leads to a faster decay of the ferromagnet’s magnetisation to its steady-state value. For long correlation lengths and higher temperature we find that additionally there is a component of the magnetisation which decays very slowly, due to a reduced decay rate of fast magnons. This effect could be useful for fast and noise-protected quantum or classical information transfer and magnonics. We further compare ferromagnetic and antiferromag... Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole Institute of Physics (IOP) 1367-2630 13672630 |
| shingle_catch_all_3 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet The dynamics and thermal equilibrium of spin waves (magnons) in a quantum ferromagnet as well as the macroscopic magnetisation are investigated. Thermal noise due to an interaction with lattice phonons and the effects of spatial correlations in the noise are considered. We first present a Markovian master equation approach with analytical solutions for any homogeneous spatial correlation function of the noise. We find that spatially correlated noise increases the decay rate of magnons with low wave vectors to their thermal equilibrium, which also leads to a faster decay of the ferromagnet’s magnetisation to its steady-state value. For long correlation lengths and higher temperature we find that additionally there is a component of the magnetisation which decays very slowly, due to a reduced decay rate of fast magnons. This effect could be useful for fast and noise-protected quantum or classical information transfer and magnonics. We further compare ferromagnetic and antiferromag... Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole Institute of Physics (IOP) 1367-2630 13672630 |
| shingle_catch_all_4 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet The dynamics and thermal equilibrium of spin waves (magnons) in a quantum ferromagnet as well as the macroscopic magnetisation are investigated. Thermal noise due to an interaction with lattice phonons and the effects of spatial correlations in the noise are considered. We first present a Markovian master equation approach with analytical solutions for any homogeneous spatial correlation function of the noise. We find that spatially correlated noise increases the decay rate of magnons with low wave vectors to their thermal equilibrium, which also leads to a faster decay of the ferromagnet’s magnetisation to its steady-state value. For long correlation lengths and higher temperature we find that additionally there is a component of the magnetisation which decays very slowly, due to a reduced decay rate of fast magnons. This effect could be useful for fast and noise-protected quantum or classical information transfer and magnonics. We further compare ferromagnetic and antiferromag... Jan Jeske, Ángel Rivas, Muhammad H Ahmed, Miguel A Martin-Delgado and Jared H Cole Institute of Physics (IOP) 1367-2630 13672630 |
| shingle_title_1 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet |
| shingle_title_2 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet |
| shingle_title_3 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet |
| shingle_title_4 | The effects of thermal and correlated noise on magnons in a quantum ferromagnet |
| timestamp | 2025-07-31T23:46:50.552Z |
| titel | The effects of thermal and correlated noise on magnons in a quantum ferromagnet |
| titel_suche | The effects of thermal and correlated noise on magnons in a quantum ferromagnet |
| topic | U |
| uid | ipn_articles_6334283 |