Conductivity of the Wigner Solid on the Free Surface of Superfluid 3He-B

Keiya Shirahama; Oleg I. Kirichek; Kimitoshi Kono

doi:10.1023/a:1022591423571

Conductivity of the Wigner Solid on the Free Surface of Superfluid ³He-B

Keiya Shirahama, Oleg I. Kirichek, Kimitoshi Kono

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We have measured the conductivity of the 2D electron crystal (the Wigner solid) trapped on the free surface of superfluid ³He-B down to 230 μK. The resistance R(T) greatly decreases as temperature T decreases, obeying Arrhenius' law, R(T) ∝ exp(-Δ(T)/k_BT), with Δ(T) which we assign to the superfluid energy gap. This reveals that the scattering of ³He quasiparticles by the WS determines the transport. As the input voltage increases, an anomalous behavior dominates the resistance just below the superfluid transition. The WS provides a new experimental method for probing both the bulk and free surface of superfluid ³He.

Original language	English
Pages (from-to)	179-184
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	110
Issue number	1-2
DOIs	https://doi.org/10.1023/a:1022591423571
Publication status	Published - 1998
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

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abstract = "We have measured the conductivity of the 2D electron crystal (the Wigner solid) trapped on the free surface of superfluid 3He-B down to 230 μK. The resistance R(T) greatly decreases as temperature T decreases, obeying Arrhenius' law, R(T) ∝ exp(-Δ(T)/kBT), with Δ(T) which we assign to the superfluid energy gap. This reveals that the scattering of 3He quasiparticles by the WS determines the transport. As the input voltage increases, an anomalous behavior dominates the resistance just below the superfluid transition. The WS provides a new experimental method for probing both the bulk and free surface of superfluid 3He.",

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AU - Shirahama, Keiya

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AB - We have measured the conductivity of the 2D electron crystal (the Wigner solid) trapped on the free surface of superfluid 3He-B down to 230 μK. The resistance R(T) greatly decreases as temperature T decreases, obeying Arrhenius' law, R(T) ∝ exp(-Δ(T)/kBT), with Δ(T) which we assign to the superfluid energy gap. This reveals that the scattering of 3He quasiparticles by the WS determines the transport. As the input voltage increases, an anomalous behavior dominates the resistance just below the superfluid transition. The WS provides a new experimental method for probing both the bulk and free surface of superfluid 3He.

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Conductivity of the Wigner Solid on the Free Surface of Superfluid ³He-B

Abstract

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