Zobrazeno 1 - 10 of 202 pro vyhledávání: '"H. Godfrin"'
1
The dispersion relation of Landau elementary excitations and the thermodynamic properties of superfluid $^4$He
Autor: Jacques Ollivier, A. Sultan, K. Beauvois, Javier Dawidowski, B. Fåk, Eckhard Krotscheck, H. Godfrin
Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2021, 103 (10), pp.104516. ⟨10.1103/PhysRevB.103.104516⟩
The dispersion relation $\epsilon(k)$ of the elementary excitations of superfluid $^4$He has been measured at very low temperatures, from saturated vapor pressure up to solidification, using a high flux time-of-flight neutron scattering spectrometer
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::930e5e5578e113b80cbfe36e3a77ca81
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2
Microscopic dynamics of superfluid He4 : A comprehensive study by inelastic neutron scattering
Autor: Jacques Ollivier, A. Sultan, K. Beauvois, Eckhard Krotscheck, Javier Dawidowski, H. Godfrin, B. Fåk
Publikováno v: Physical Review B. 97
Fil: Beauvois, K.. Universite Grenoble Alpes. Institut Nanosciences et Cryogenie - Commissariat a L´Energie Atomique et Aux Energies Alternatives. Institut Nanosciences et Cryogenie; Francia. Institut Laue Langevin; Francia
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5c9e0bd054d9a5a12fc02e5e58cb0d5
https://doi.org/10.1103/physrevb.97.184520
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3
Akademický článek
Observation of Zero-Sound at Atomic Wave-Vectors in a Monolayer of Liquid 3He.
Autor: H. Godfrin1, M. Meschke1, H.-J. Lauter2, H. Böhm3, E. Krotscheck3, M. Panholzer3
Publikováno v: Journal of Low Temperature Physics. Jan2010, Vol. 158 Issue 1/2, p147-154. 8p. 4 Graphs.
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4
Superfluid 4He dynamics beyond quasiparticle excitations
Autor: H.J. Lauter, Charles E Campbell, K. Beauvois, T. Lichtenegger, Javier Dawidowski, H. Godfrin, B. Fåk, Jacques Ollivier, A. Sultan, Eckhard Krotscheck
Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2016, 94 (2), pp.024504. ⟨10.1103/PhysRevB.94.024504⟩
Physical Review B, 2016, 94 (2), pp.024504. ⟨10.1103/PhysRevB.94.024504⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
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The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure factor. A highly structured response is observed above the familiar phono
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::810c990a747bf74e8e7355e38cef3710
https://hal.archives-ouvertes.fr/hal-01361110
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5
Electron Thermalization in Metallic Islands Probed by Coulomb Blockade Thermometry
Autor: M. Meschke, J. P. Pekola, F. Gay, R. E. Rapp, H. Godfrin
Publikováno v: Journal of Low Temperature Physics. 134:1119-1143
We describe a systematic series of experiments on thermalization of electrons in lithographic metallic thin films at millikelvin temperatures using Coulomb blockade thermometry (CBT). Joule dissipation due to biasing of the CBT sensor tends to drive
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e8271b5f6f3474f0babbf128a31b2dd
https://doi.org/10.1023/b:jolt.0000016733.75220.5d
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6
[Untitled]
Autor: B. Fåk, N.H. van Dijk, K. Guckelsberger, H. Godfrin, R. Scherm, H. Schober
Publikováno v: Journal of Low Temperature Physics. 110:417-424
The dynamic structure factor S(Q,E) in normal liquid3He, which contains information on both density and spin-density fluctuations, has been measured by inelastic neutron scattering both well below and close to the Fermi temperature. The data extend t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3af200ba817fd430d97527b486f8e1c8
https://doi.org/10.1023/a:1022569708067
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7
Strong orientational effect of stretched aerogel on the (3)He order parameter
Autor: J, Elbs, Yu M, Bunkov, E, Collin, H, Godfrin, G E, Volovik
Publikováno v: Physical review letters. 100(21)
Deformation of aerogel strongly modifies the orientation of the order parameter of superfluid (3)He confined in aerogel. We used a radial squeezing of aerogel to keep the orbital angular momentum of the (3)He Cooper pairs in the plane perpendicular t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::655d008db2d17f07e3ca6753de80bfc8
https://pubmed.ncbi.nlm.nih.gov/18518618
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8
Probing 'cosmological' defects in superfluid 3He-B with a vibrating-wire resonator
Autor: C B, Winkelmann, J, Elbs, Yu M, Bunkov, H, Godfrin
Publikováno v: Physical review letters. 96(20)
We report on the observation of an anomalously high damping measured by a vibrating-wire resonator (VWR) immersed into superfluid at ultralow temperatures. The observed dissipation is orders of magnitude above that corresponding to friction with the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::5d1b6f0ed57c813bd7cf6ff299f2f28a
https://pubmed.ncbi.nlm.nih.gov/16803180
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