Abstract Slip traces in body-centred cubic single crystals usually correspond to various slip planes and even, in the case of wavy slip traces, to none identifiable crystallographic slip planes. We recently developed an experimental scanning tunnelling microscope that allows characterizing slip traces at the atomic scale. Unique experimental results obtained at 200 K and 293 K have already been published. We report here new relevant experimental results obtained at 90 K on niobium single crystals, that provide additional information in the understanding of the motion of screw dislocations in bcc metals.

中文翻译：

---

铌中滑移痕迹的低温原子尺度观测

摘要 体心立方单晶中的滑移轨迹通常对应于各种滑移面，甚至在波状滑移轨迹的情况下，对应于不可识别的晶体学滑移面。我们最近开发了一种实验扫描隧道显微镜，可以在原子尺度上表征滑移痕迹。在 200 K 和 293 K 下获得的独特实验结果已经发表。我们在此报告了在 90 K 下在铌单晶上获得的新的相关实验结果，这些结果为理解 bcc 金属中螺旋位错的运动提供了额外的信息。