STEPPED SURFACES OF HCP HE-4 CRYSTALS

被引：46

作者：

ROLLEY, E

CHEVALIER, E

GUTHMANN, C

BALIBAR, S

机构：

[1] Laboratoire de Physique Statistique, Ecole Normale Supérieure, 75231 Paris Cedex 05

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.72.872

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied melting-freezing waves on helium-4 crystal surfaces which are tilted by a small angle phi with respect to the c facets. We present the first experimental evidence that a crossover exists from stepped to rough behavior as a function of angle. We demonstrate this by the independent measurement of the two components gamma(parallel-to) and gamma(perpendicular-to) of the surface stiffness. In the stepped regime, below the crossover angle phi(c) almost-equal-to 3-degrees, we also measured both elastic and entropic contributions to the step interactions.

引用

页码：872 / 875

页数：4

共 37 条

[1] UNIVERSAL JUMP OF GAUSSIAN CURVATURE AT THE FACET EDGE OF A CRYSTAL - REPLY [J].