Quasiparticle Scattering Model for Interpreting the Wigner Solid Resistivity on the Surface of Superfluid ^3He(<Special Topics>New Frontiers of Quantum Fluids and Solids)
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概要
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A quasiparticle scattering model developed by Monarkha and Kono is explored further to include magnetic field effects on superfluid ^3He. It successfully explains the absence of magnetic field effects in superfluid ^3He-A and normal ^3He. Both an explicit magnetic-field-dependent term in the Bogoliubov quasiparticle energy and the distortion of energy gap are the origin of anisotropic properties of superfluid ^3He-B in magnetic field. In order to quantitatively compare the model with experimental observation, the energy gap distortion has been numerically evaluated by taking into account Landau's Fermi liquid effect up to F^a_0. The Leggett rotation is considered in an ad hoc fashion in ^3He-B. The experimental data can be satisfactorily interpreted by assuming that the rotation considered to be realized only in the vicinity of the free surface extends to the bulk. The numerical value of the Landau parameter is important in obtaining quantitative agreement. This might provide a new experimental possibility for determining Landau parameters under zero pressure.
- 2008-11-15
著者
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Ikegami Hiroki
Low Temperature Physical Laboratory Riken
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Ikegami Hiroki
Low Temperature Physics Laboratory Riken
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Kono Kimitoshi
Low Temperature Physics Laboratory Riken
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Kono Kimitoshi
Low Temperature Physical Laboratory Riken
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Monarkha Yuriy
Low Temperature Physics Laboratory Riken:institute For Low Temperature Physics And Engineering
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