Zobrazeno 1 - 10
of 21
pro vyhledávání: '"V. M. H. Ruutu"'
Publikováno v:
Physical Review Letters. 85:4739-4742
Spin-mass vortices have been observed to form in rotating superfluid 3He−B, following the absorption of a thermal neutron and a rapid transition from the normal to the superfluid state. The spin-mass vortex is a composite defect which consists of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f40b38f49c94c539d1a5c591aab93eb
https://doi.org/10.1103/physrevlett.85.4739
https://doi.org/10.1103/physrevlett.85.4739
Publikováno v:
Physica B: Condensed Matter. 255:27-40
The maximum and the equilibrium numbers of vortex lines are measured in a rotating cylindrical container as a function of its rotation velocity Ω. We find that a slow cool-down through the superfluid transition at constant rotation produces a state
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0eb5edb02f403a741c4dc9f3cc1675ba
https://doi.org/10.1016/s0921-4526(98)00452-9
https://doi.org/10.1016/s0921-4526(98)00452-9
Autor:
V. M. H. Ruutu, Matti Krusius, Grigory Volovik, Vladimir Eltsov, Yu. G. Makhlin, Bernard Plaçais
Publikováno v:
Physical Review Letters. 80:1465-1468
We use neutron absorption in rotating 3He-B to heat locally a 10 micrometer-size volume into normal phase. When the heated region cools back in microseconds, vortex lines are formed. We record with NMR the number of lines as a function of superflow v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a337de9719287b71e7cd442d97b587fa
https://doi.org/10.1103/physrevlett.80.1465
https://doi.org/10.1103/physrevlett.80.1465
Publikováno v:
Physical Review B. 56:14089-14092
In decelerating rotation, vortex lines annihilate in single-vortex events at the annihilation threshold where their number ${N}_{\mathrm{}\mathrm{max}}(\ensuremath{\Omega})$ is equal to or exceeds the equilibrium value ${N}_{\mathrm{}\mathrm{eq}}(\en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03964ed6ba0d27e3f0235b6b4377c601
https://doi.org/10.1103/physrevb.56.14089
https://doi.org/10.1103/physrevb.56.14089
Publikováno v:
Journal of Low Temperature Physics. 107:93-164
We report on the first comprehensive measurements of critical superflow velocities in3He-B which allow different mechanisms of vortex formation to be identified. As a function of temperatureT and pressureP, we measure the critical angular velocity Ω
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::412063ac3133e7d476a7be1916eb7f4a
https://doi.org/10.1007/bf02396838
https://doi.org/10.1007/bf02396838
Publikováno v:
Journal of Low Temperature Physics. 103:331-343
NMR spectrometry can be used to identify different topological objects in the order parameter field of rotating superfluid3He-A. We list their signatures in the cw NMR absorption line shape. Quantized vortex lines, domain walls, and their combination
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bb404f0972a1533d067416d7c94b4af
https://doi.org/10.1007/bf00754793
https://doi.org/10.1007/bf00754793
Autor:
Ü. Parts, Matti Krusius, Grigory Volovik, J. M. Karimäki, V. M. H. Ruutu, Erkki Thuneberg, J.H. Koivuniemi
Publikováno v:
Physical Review Letters. 75:3320-3323
Four alternative but topologically different structures of vorticity exist in rotating ${}^{3}\mathrm{H}\mathrm{e}\ensuremath{-}A$. As a function of magnetic field ( $H$) and rotation velocity $(\ensuremath{\Omega})$, we identify with NMR the type of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::222d266179e50fa9e9835c8aed8ffdd8
https://doi.org/10.1103/physrevlett.75.3320
https://doi.org/10.1103/physrevlett.75.3320
Autor:
Vladimir V. Dmitriev, Yu. M. Bunkov, J. S. Korhonen, J.H. Koivuniemi, P. I. Soininen, Matti Krusius, Ü. Parts, Mikael Fogelström, Olli V. Lounasmaa, Grigory Volovik, Y. Kondo, M. Huebner, V. M. H. Ruutu, N. B. Kopnin
Publikováno v:
Europhysics Letters (EPL). 31:449-454
Nucleation of vortices in units of one quantum has been observed with c.w. NMR in a rotating cylinder filled with 3He-B. During acceleration a new vortex is created each time the counterflow velocity at the perimeter reaches a critical value vc(T, p)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::237bcf7bd1c7ddd40cf376a9fb1c858b
https://doi.org/10.1209/0295-5075/31/8/005
https://doi.org/10.1209/0295-5075/31/8/005
Autor:
J.H. Koivuniemi, J. M. Karimäki, V. M. H. Ruutu, Matti Krusius, Erkki Thuneberg, Ü. Parts, M.T. Heinila, Grigory Volovik
Publikováno v:
Physical Review Letters. 72:3839-3842
A new state of rotating superfluid $^{3}\mathit{A}$ has been found. Instead of quantized vortex lines, it consists of a continuous vortex sheet. The sheet has as a backbone a topologically stable domain wall called soliton, to which the vorticity is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f5bff701938d39f587bdc05e80e94bd
https://doi.org/10.1103/physrevlett.72.3839
https://doi.org/10.1103/physrevlett.72.3839
Autor:
Matti Krusius, Vladimir Eltsov, V. M. H. Ruutu, A. J. Gill, Yu. G. Makhlin, Grigory Volovik, Tom W.B. Kibble, Bernard Plaçais, Wen Xu
Publikováno v:
Nature. 382:334-336
We report the observation of vortex formation upon the absorption of a thermal neutron in a rotating container of superfluid $^3$He-B. The nuclear reaction n + $^3$He = p + $^3$H + 0.76MeV heats a cigar shaped region of the superfluid into the normal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdfb46b871a9a59a3aa348658c6c0a2d
https://doi.org/10.1038/382334a0
https://doi.org/10.1038/382334a0