Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Superfluid He-3 A-B surface tension
AU - Bartkowiak, M.
AU - Haley, Richard P.
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Pickett, George R.
AU - Skyba, P.
PY - 2003/5
Y1 - 2003/5
N2 - We have made two different measurements of interfacial energies below 300 muK, at zero pressure and in magnetic fields up to 400 mT. A variable magnetic field profile allows us to stabilize and precisely manipulate the position of the A-B interface. First, we can derive the difference in wall wetting energies from the behaviour of the phase boundary as it enters and exits a stack of glass capillary tubes. Secondly, we can measure the surface tension from the level of over-or under-magnetization needed to force the interface through an aperture. These are the first surface energy measurements in high magnetic fields in the zero-temperature limit. Our results are in surprising agreement with earlier measurements at high pressure close to T-c.
AB - We have made two different measurements of interfacial energies below 300 muK, at zero pressure and in magnetic fields up to 400 mT. A variable magnetic field profile allows us to stabilize and precisely manipulate the position of the A-B interface. First, we can derive the difference in wall wetting energies from the behaviour of the phase boundary as it enters and exits a stack of glass capillary tubes. Secondly, we can measure the surface tension from the level of over-or under-magnetization needed to force the interface through an aperture. These are the first surface energy measurements in high magnetic fields in the zero-temperature limit. Our results are in surprising agreement with earlier measurements at high pressure close to T-c.
KW - superfluidity
KW - TRANSITION
KW - ANGLE
KW - PHASE
KW - He-3
KW - interface
KW - wetting
U2 - 10.1016/S0921-4526(02)01919-1
DO - 10.1016/S0921-4526(02)01919-1
M3 - Journal article
VL - 329-333
SP - 122
EP - 125
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1
T2 - 23rd International Conference on Low Temperature Physics (LT23)
Y2 - 20 August 2002 through 27 August 2002
ER -