Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Schanen R"'
Autor:
Autti, S., Haley, R. P., Jennings, A., Pickett, G. R., Poole, M., Schanen, R., Soldatov, A. A., Tsepelin, V., Vonka, J., Zavjalov, V. V., Zmeev, D. E.
Publikováno v:
Nature Communications 14, 6819 (2023)
The B phase of superfluid 3He can be cooled into the pure superfluid regime, where the thermal quasiparticle density is negligible. The bulk superfluid is surrounded by a quantum well at the boundaries of the container, confining a sea of quasipartic
Externí odkaz:
http://arxiv.org/abs/2303.16518
Autor:
Gu'enault, A. M., McClintock, P. V. E., Poole, M., Schanen, R., Tsepelin, V., Zmeev, D., Schmoranzer, D., Vinen, W. F.
We describe a new type of torsional oscillator, suitable for studies of quantum fluids at frequencies of $\sim$ $100$ Hz, but capable of reaching high velocities of up to several cm\,s$^{-1}$. This requires the oscillator amplitude to exceed $100$ $\
Externí odkaz:
http://arxiv.org/abs/2201.08503
Autor:
Autti, S., Guénault, A. M., Haley, R. P., Jennings, A., Pickett, G. R., Schanen, R., Soldatov, A. A., Tsepelin, V., Vonka, J., Zmeev, D. E.
Publikováno v:
Phys. Rev. B 102, 064508 (2020)
Understanding the temperature dependence of thermal boundary resistance, or Kapitza resistance, between liquid helium and sintered metal has posed a problem in low temperature physics for decades. In the ballistic regime of superfluid $^{3}$He-B, we
Externí odkaz:
http://arxiv.org/abs/2005.05838
Autor:
Autti, S., Haley, R. P., Jennings, A., Pickett, G. R., Schanen, R., Soldatov, A. A., Tsepelin, V., Vonka, J., Wilcox, T., Zmeev, D. E.
Publikováno v:
Nat Commun 11, 4742 (2020)
The ground state of a fermionic condensate is well protected against perturbations in the presence of an isotropic gap. Regions of gap suppression, surfaces and vortex cores which host Andreev-bound states, seemingly lift that strict protection. Here
Externí odkaz:
http://arxiv.org/abs/2002.10865
Autor:
Guenault, A. M., Guthrie, A., Haley, R. P., Kafanov, S., Pashkin, Yu. A., Pickett, G. R., Poole, M., Schanen, R., Tsepelin, V., Zmeev, D. E., Collin, E., Maillet, O., Gazizulin, R.
Superfluids, such as superfluid $^3\mathrm{He}$ and $^4\mathrm{He}$, exhibit a broad range of quantum phenomena and excitations which are unique to these systems. Nanoscale mechanical resonators are sensitive and versatile force detectors with the ab
Externí odkaz:
http://arxiv.org/abs/1907.00970
Autor:
Bradley, D. I., George, R., Guenault, A. M., Haley, R. P., Kafanov, S., Noble, M. T., Pashkin, Yu. A., Pickett, G. R., Poole, M., Prance, J. R., Sarsby, M., Schanen, R., Tsepelin, V., Wilcox, T., Zmeev, D. E.
Publikováno v:
Scientific Reports volume 7, Article number: 4876 (2017)
Microelectromechanical (MEMS) and nanoelectromechanical systems (NEMS) are ideal candidates for exploring quantum fluids since they can be manufactured reproducibly, cover the frequency range from hundreds of kilohertz up to gigahertz and usually hav
Externí odkaz:
http://arxiv.org/abs/1809.07411
Autor:
Bradley, D. I., Fisher, S. N., Guénault, A. M., Haley, R. P., Lawson, C. R., Pickett, G. R., Schanen, R., Skyba, M., Tsepelin, V., Zmeev, D. E.
Publikováno v:
Nature Physics 12, 1017 (2016)
Coherent condensates appear as emergent phenomena in many systems, sharing the characteristic feature of an energy gap separating the lowest excitations from the condensate ground state. This implies that a scattering object, moving through the syste
Externí odkaz:
http://arxiv.org/abs/1606.03082
Autor:
Eltsov, V. B., Blaauwgeers, R., Kopnin, N. B., Krusius, M., Ruohio, J. J., Schanen, R., Thuneberg, E. V.
Publikováno v:
Phys. Rev. Lett., 88 (2002) 065301
In isotropic macroscopic quantum systems vortex lines can be formed while in anisotropic systems also vortex sheets are possible. Based on measurements of superfluid 3He-A, we present the principles which select between these two competing forms of q
Externí odkaz:
http://arxiv.org/abs/cond-mat/0109092
Autor:
Finne, A., Groenberg, L., Blaauwgeers, R., Eltsov, V. B., Eska, G., Krusius, M., Ruohio, J. J., Schanen, R., Suni, I.
Sputtered Nb thin-film LC resonators for low frequencies at 0.5 MHz have been fabricated and tested in the temperature range 0.05--1 K in magnetic fields up to 30 mT. Their Q value increases towards decreasing temperature as sqrt(T) and reaches 10^3
Externí odkaz:
http://arxiv.org/abs/physics/0012052
Superfluid 3He-A displays the largest variety in vortex structure among the presently known coherent quantum systems. The experimentally verified information comes mostly from NMR measurements on the rotating fluid, from which the order-parameter tex
Externí odkaz:
http://arxiv.org/abs/cond-mat/0009397