Saturated superfluid-He4film flow: Characteristic oscillations induced by persistent circulation
نویسندگان
چکیده
منابع مشابه
Entropy- and flow-induced superfluid states.
Normally the role of phase fluctuations in superfluids and superconductors is to drive a phase transition to the normal state. This happens due to proliferation of topologically nontrivial phase fluctuations in the form of vortices. Here we discuss a class of systems where, by contrast, nontopological phase fluctuations can produce superfluidity. Here we understand superfluidity as a phenomenon...
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H IGH-PERFORMANCE fighter aircraft experience storeinduced limit cycle oscillations (LCOs) [1], which are characterized by a limited amplitude, antisymmetric motion of thewing and lateral motion of the fuselage and cockpit. The main concern with LCO motion is its negative impact on a pilot’s ability to complete a mission; specifically, the lateral motion of the cockpit causes difficulties when ...
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We find that a temperature differential can drive superfluid oscillations in 4He. The oscillations are excited by a heater which causes a time dependent temperature differential across an array of 70 nm apertures. By measuring the oscillation frequency and simultaneously determining both temperature and pressure differentials we prove the validity of the most general form of the Josephson frequ...
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Brown, R., and Pickering, D. (1974). Archives of Disease in Childhood, 49, 883. Persistent transitional circulation. Six infants presented within 24 hours of birth with cyanosis. The clinical findings, combined with catheter studies in 4 cases, led to the conclusion that there was a persistent fetal direction of ductus arteriosus flow with pulmonary hypertension, i.e. a 'persistent transitional...
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The transfer of charge between different regions of a phase-coherent mesoscopic sample is investigated. Charge transfer from a side branch quantum dot into a ring changes the persistent current through a sequence of plateaus of diamagnetic and paramagnetic states. In contrast, a quantum dot embedded in a ring exhibits sharp resonances in the persistent current, whose sign is independent of the ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1977
ISSN: 0556-2805
DOI: 10.1103/physrevb.15.2671