Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Sonin, E. B."'
Autor:
Sonin, E. B.
The phenomenon of superfluidity (superconductivity) is a possibility of transport of mass (charge) on macroscopical distances without essential dissipation. In magnetically ordered media with easy-plane topology of the order parameter space the super
Externí odkaz:
http://arxiv.org/abs/2211.15723
Autor:
Sonin, E. B.
Publikováno v:
Fiz. Nizk. Temp. 46, 523 (2020) [Low Temp. Phys. 46, 436 (2020)]
The paper reviews the theory of the long-distance spin superfluid transport in solid ferro- and antiferromagnets based on the analysis of the topology, the Landau criterion, and phase slips. Experiments reporting evidence of the existence of spin sup
Externí odkaz:
http://arxiv.org/abs/2005.14579
Autor:
Sonin, E. B.
Publikováno v:
Pis'ma Zh. Eksp. Teor. Fiz. 111, 706 (2020) [JETP Lett. 111, 598 (2020)]
In the recently published preprint arXiv:200.02610 Eltsov and L'vov calculated the amplitudes of waves in the Kelvin-wave cascades. This returns us to the rather old, but still unresolved dispute on the role of the tilt symmetry and the locality in t
Externí odkaz:
http://arxiv.org/abs/2003.09912
Autor:
Sonin, E. B.
Publikováno v:
Phys. Rev. Research 1, 033103 (2019)
The paper investigates the coexistence and interplay of spin and mass superfluidity in the antiferromagnetic spin-1 BEC. The hydrodynamical theory describes the spin degree of freedom by the equations similar to the Landau--Lifshitz--Gilbert theory f
Externí odkaz:
http://arxiv.org/abs/1908.10633
Autor:
Sonin, E. B.
Publikováno v:
Phys. Rev. B 99, 104423 (2019)
This paper focuses on spin superfluid transport, observation of which was recently reported in antiferromagnet Cr$_2$O$_3$ [Yuan et al., Sci. Adv. 4, eaat1098 (2018)]. This paper analyzes the role of dissipation in transformation of spin current inje
Externí odkaz:
http://arxiv.org/abs/1810.07020
Autor:
Sonin, E. B.
Publikováno v:
Fiz. Nizk. Temp. 44, 838-846 (2018) [Low Temp. Phys. 44, 665-662 (2018)]
The paper investigates dynamics of nonsingular vortices in a ferromagnetic spin-1 BEC, where spin and mass superfluidity coexist in the presence of uniaxial anisotropy (linear and quadratic Zeeman effect). The analysis is based on hydrodynamics follo
Externí odkaz:
http://arxiv.org/abs/1803.06939
Autor:
Sonin, E. B.
Publikováno v:
Phys. Rev. B 97, 224517 (2018)
The paper investigates the coexistence and interplay of spin and mass superfluidity in a ferromagnetic spin-1 Bose-Einstein condensate. Superfluidity is possible only in the presence of uniaxial anisotropy (linear and quadratic Zeeman effect). This f
Externí odkaz:
http://arxiv.org/abs/1801.01099
Autor:
Sonin, E. B.
Publikováno v:
Phys. Rev. B 95, 144432 (2017)
Recently it was suggested that stationary spin supercurrents (spin superfluidity) are possible in the magnon condensate observed in yttrium-iron-garnet (YIG) magnetic films under strong external pumping. Here we analyze this suggestion. From topology
Externí odkaz:
http://arxiv.org/abs/1702.06994
Autor:
Sonin, E. B.
The comment explains that the preprint arXiv:1503.0042 has not presented persuasive theoretical or experimental arguments of existence of spin supercurrents in a magnon condensate prepared in a room temperature yttrium-iron-garnet magnetic film becau
Externí odkaz:
http://arxiv.org/abs/1607.04720
Autor:
Sonin, E. B.
Publikováno v:
Phys. Rev. B 94, 054521 (2016)
The paper analyzes the transverse forces (the Magnus and the Lorentz forces) on vortices in superfluids put into periodic potentials at $T=0$. The case of weak potential and the tight-binding limit described by the Bose-Hubbard model were addressed.
Externí odkaz:
http://arxiv.org/abs/1607.01352