Bartkowiak, M. and Fisher, Shaun N. and Guénault, A.M. and Haley, Richard P. and Plenderleith, G. N. and Pickett, George R. and Skyba, P. (2000) The thermodynamics of the A-B transition in superfluid He-3 as a probe of the A-phase gap node geometry. Physica B: Condensed Matter, 280 (1-4). pp. 108-111. ISSN 0921-4526Full text not available from this repository.
We have used a magnetic field gradient to stabilise the phase boundary between the A- and B-phases of superfluid He-3 inside a quasiparticle black body radiator down to 146 mu K; The radiator technique enables us to measure very accurately the density of quasiparticle excitations and therefore the temperature of the B-phase inside the radiator. As we ramp the held through the transition we can observe the cooling (warming) effect when the volume of A-phase is increased (decreased). From these measurements we deduce the temperature dependence of the latent heat, which provides the lowest temperature verification yet of the existence of nodes in the A-phase order parameter.
|Journal or Publication Title:||Physica B: Condensed Matter|
|Uncontrolled Keywords:||A-B transition ; He-3 superfluid ; latent heat ; phase transition ; ultralow temperatures|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Dr Richard P. Haley|
|Deposited On:||28 Jan 2009 16:52|
|Last Modified:||17 Jul 2013 10:23|
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