Dresden 2006 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 16: Solids At Low Temperature: Quantum Liquids, Bose-Einstein Condensates, Ultra-cold Atoms, ...

TT 16.6: Vortrag

Dienstag, 28. März 2006, 10:45–11:00, HSZ 105

About the dependence of distribution for the superfluid density of He⁴ absorbed in a narrow single walled carbon nanotube in the vicinity of the λ-transition. — •Vilchynskyi Stanislav and Tkachenko Olena — Kiev Taras Shevchenko National University

We report the results of an iteration calculations of the temperature dependence of λ-transition and distribution for the superfluid density of He⁴ absorbed in a narrow single walled carbon nanotube in the vicinity of λ-transition. The calculations were made for different values of the carbon nanotube diameter and a value of an inoculating interaction V₀ (the depth of a potential well). We demonstrate the decrease of the temperature of the λ -transition and superfluid density in He⁴ absorbed in the nanotube and find an appropriate No-dqtemperature shiftNo-dq. It was shown that that if the nanotube’s diameter is invariable, the increment of the interaction between a superfluid helium and carbon atoms will reduce to the decreasing of superfluid density (but to the increasing of the No-dqtemperature shiftNo-dq). In this case the appearance of of superfluid component decelerates.