Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Oleg A. Starykh"'
We use a hydrodynamic approach to investigate dynamic spin susceptibility of the antiferromagnetic spin-$1/2$ Heisenberg chain with a uniform Dzyaloshinskii-Moriya (DM) interaction in the presence of an external magnetic field. We find that transvers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49750907f1a7ccf0781e27d141591785
Autor:
Kirill Yu. Povarov, Timofei A. Soldatov, Ren-Bo Wang, Andrey Zheludev, Alexander I. Smirnov, Oleg A. Starykh
We report experimental verification of the recently predicted collective modes of spinons, stabilized by backscattering interaction, in a model quantum spin chain material. We exploit the unique geometry of uniform Dzyaloshinskii-Moriya interactions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e41884695cbe1e0b76776da4eb76ad73
http://arxiv.org/abs/2108.02835
http://arxiv.org/abs/2108.02835
Publikováno v:
Physical Review Letters. 126
We investigate the amplitude (Higgs) mode associated with longitudinal fluctuations of the order parameter at the continuous spontaneous symmetry breaking phase transition. In quantum magnets, due to the fast decay of the amplitude mode into low-ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f00d480018c097681ab9b4e462e5d02
https://doi.org/10.1103/physrevlett.126.227201
https://doi.org/10.1103/physrevlett.126.227201
We study the transverse dynamical susceptibility of an antiferromagnetic spin-$1/2$ chain in the presence of a longitudinal Zeeman field. In the low magnetization regime in the gapless phase, we show that the marginally irrelevant backscattering inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9761e879f7027f2c333ebc6e5f98bb0
We propose and investigate a simple one-dimensional model for a single-channel quantum wire hosting electrons that interact repulsively and are subject to a significant spin-orbit interaction. We show that an external Zeeman magnetic field, applied a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2438da4e4dd665d175b20b4aae4606f5
Autor:
Leon Balents, Oleg A. Starykh
We study the transverse dynamical spin susceptibility of the two dimensional U(1) spinon Fermi surface spin liquid in a small applied Zeeman field. We show that both short-range interactions, present in a generic Fermi liquid, as well as gauge fluctu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22205af0bff83e1e15ba50b61c9a3180
http://arxiv.org/abs/1904.02117
http://arxiv.org/abs/1904.02117
We study the superconducting transition in a two-dimensional electron gas with strong Rashba spin-orbit coupling. We assume low electron density, such that only the majority spin band participates in the transition. We show that the superconducting t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24caae57774faf0f70d3fc98b37895fa
http://arxiv.org/abs/1812.06998
http://arxiv.org/abs/1812.06998
Publikováno v:
Physical Review B. 96
We report a combined analytical and density matrix renormalized group study of the antiferromagnetic XXZ spin-1/2 Heisenberg chain subject to a uniform Dzyaloshinskii-Moriya (DM) interaction and a transverse magnetic field. The numerically determined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::447129147a5ad53255a50d727baf52f8
https://doi.org/10.1103/physrevb.96.214441
https://doi.org/10.1103/physrevb.96.214441
We describe electron spin resonance in a quantum spin liquid with significant spin-orbit coupling. We find that the resonance directly probes spinon continuum which makes it an efficient and informative probe of exotic excitations of the spin liquid.
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::720e6b11eaf9415a40de4dd6cae06ccb
http://arxiv.org/abs/1706.01597
http://arxiv.org/abs/1706.01597
Autor:
Wen Jin, Oleg A. Starykh
Motivated by recent experiments on spin chain materials K$_2$CuSO$_4$Cl$_2$ and K$_2$CuSO$_4$Br$_2$, we theoretically investigate the problem of weakly coupled spin chains (chain exchange $J$, interchain $J'$) subject to a $\textit{staggered between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::562fe1eae2199499a591211e49bd39a0
http://arxiv.org/abs/1701.01465
http://arxiv.org/abs/1701.01465