Workshop dedicado a Mariana Weissmann: Resumenes de los Posters y Charlas Invitadas

Curvature effects on the surface tension and thickness at the free interface of ⁴He systems

Leszek Szybisz^1,2 and Ignacio Urrutia¹
¹ Laboratorio TANDAR, Departamento de Física, Comisión Nacional de Energía Atómica, Av. del Libertador 8250, RA-1429 Buenos Aires, Argentina.
² Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, RA-1428 Buenos Aires, Argentina

Abstract

The surface energy and the thickness of the interface at the free surface of superfluid ⁴He is studied. Results of calculations for cylindrical and spherical systems carried out by using density functionals are reported. The obtained values for the width are compared with available results for planar and spherical geometries and with experimental data. It is found that for large species the surface thickness is independent of the geometry. The behavior of the surface tension exhibits an overshoot similar to that found previously for the central density.

contact:<iurrutia@cnea.gov.ar>

En las fronteras de la Materia Condensada

Workshop dedicado a Mariana Weissmann

Abstract