Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Guenault, A. M."'
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:
Guenault, A. M., Guthrie, A., Haley, R. P., Kafanov, S., Pashkin, Yu. A., Pickett, G. R., Tsepelin, V., Zmeev, D. E., Collin, E., Gazizulin, R., Maillet, O.
Publikováno v:
Phys. Rev. B 101, 060503 (2020)
Nanoscale mechanical resonators are widely utilized to provide high sensitivity force detectors. Here we demonstrate that such high quality factor resonators immersed in superfluid \(^4\mathrm{He}\) can be excited by a modulated flux of phonons. A na
Externí odkaz:
http://arxiv.org/abs/1907.01947
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:
Guénault, A. M., Guthrie, A., Haley, R. P., Kafanov, S., Pashkin, Yu. A., Pickett, G. R., Tsepelin, V., Zmeev, D. E., Collin, E., Gazizulin, R., Maillet, O., Arrayás, M., Trueba, J. L.
We report on nanomechanical resonators with very high-quality factors operated as mechanical probes in liquid helium \(^4\mathrm{He}\), with special attention to the superfluid regime down to millikelvin temperatures. Such resonators have been used t
Externí odkaz:
http://arxiv.org/abs/1810.10129
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., Guénault, A. M., Gunnarsson, D., Haley, R. P., Holt, S., Jones, A. T., Pashkin, Yu. A., Penttilä, J., Prance, J. R., Prunnila, M., Roschier, L.
Publikováno v:
Sci. Rep. 7, 45566 (2017)
We demonstrate significant cooling of electrons in a nanostructure below 10 mK by demagnetisation of thin-film copper on a silicon chip. Our approach overcomes the typical bottleneck of weak electron-phonon scattering by coupling the electrons direct
Externí odkaz:
http://arxiv.org/abs/1611.02483
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:
Defoort, M., Dufresnes, S., Ahlstrom, S. L., Bradley, D. I., Haley, R. P., Guénault, A. M., Guise, E. A., Pickett, G. R., Poole, M., Woods, A. J., Tsepelin, V., Fisher, S. N., Godfrin, H., Collin, E.
Publikováno v:
Online first J. of Low Temp. Phys. (2015)
We have measured the interaction between superfluid $^3$He-B and a micro-machined goalpost-shaped device at temperatures below $0.2\,T_c$. The measured damping follows well the theory developed for vibrating wires, in which the Andreev reflection of
Externí odkaz:
http://arxiv.org/abs/1512.01033
Autor:
Fujiyama, Shoji, Mitani, Akira, Tsubota, Makoto, Bradley, David I., Fisher, Shaun N., Guenault, Anthony M., Haley, Richard P., Pickett, George R., Tsepelin, Viktor
A zero temperature superfluid is arguably the simplest system in which to study complex fluid dynamics, such as turbulence. We describe computer simulations of such turbulence and compare the results directly with recent experiments in superfluid 3He
Externí odkaz:
http://arxiv.org/abs/1005.2069
Autor:
Bradley, D. I., Clubb, D. O., Fisher, S. N., Guénault, A. M., Haley, R. P., Matthews, C. J., Pickett, G. R., Tsepelin, V., Zaki, K.
Publikováno v:
Phys. Rev. Lett. 96, 2006, 035301
We describe measurements of the decay of pure superfluid turbulence in superfluid 3He-B, in the low temperature regime where the normal fluid density is negligible. We follow the decay of the turbulence generated by a vibrating grid as detected by vi
Externí odkaz:
http://arxiv.org/abs/0706.0621