Phase oscillations in superfluid 3He-B weak links
Year: 2001
Authors: Smerzi A., Raghavan S., Fantoni S., Shenoy S.R.
Autors Affiliation: Ist Nazl Fis Mat, I-34014 Trieste, Italy; Scuola Int Super Studi Avanzati, I-34014 Trieste, Italy; Abdus Salam Int Ctr Theoret Phys, I-34100 Trieste, Italy; Univ Rochester, Dept Phys & Astron, Rochester Theory Ctr Opt Sci & Engn, Rochester, NY 14627 USA.
Abstract: Oscillations in quantum phase about a mean value of pi, observed across micropores connecting two He-3-B baths, are explained in a Ginzburg-Landau phenomenology. The dynamics arises from the Josephson phase relation,the interbath continuity equation, and helium boundary conditions. The pores are shown to act as Josephson tunnel junctions, and the dynamic variables are the inter bath phase difference and fractional difference in superfluid density at micropores. The system maps onto a non-rigid, momentum-shortened pendulum, with inverted-orientation oscillations about a vertical tilt angle phi = pi, and other modes are predicted.
Journal/Review: EUROPEAN PHYSICAL JOURNAL B
Volume: 24 (4) Pages from: 431 to: 435
KeyWords: Pi-state; FlowDOI: 10.1007/s10051-001-8695-0Citations: 4data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-20References taken from IsiWeb of Knowledge: (subscribers only)