Volume 89, Number 2, January 2010
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||05 February 2010|
Josephson mass current dynamics in experiments and simulations within a new model concept
Physikalisches Institut, Universität Bayreuth - 95440 Bayreuth, Germany, EU
Corresponding author: email@example.com
Accepted: 11 January 2010
Josephson mass currents have been investigated in superfluid 3He-B with high temporal resolution. The experimentally observed dynamics of all DC and AC Josephson effects could be modeled in detail by solving the quantum-phase– controlled equations of motion which could be adjusted for other quantum condensates as well. We show that the 3He π-state, discussed in the literature, might not be a state of 3He but nonlinear dynamics which also dominates the apparent dissipation and oscillation in the Josephson device. Four different modes were identified for Cooper pair oscillations and a pure sinusoidal current phase relationship was found for temperatures down to 0.16 mK where the device can be used as a bolometric detector.
PACS: 67.30.H- – Superfluid phase of 3He / 85.25.Cp – Josephson devices / 74.50.+r – Tunneling phenomena; Josephson effects
© EPLA, 2010
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