Current-Induced Resonant Motion of a Magnetic Vortex Core: Effect of Nonadiabatic Spin Torque

The current-induced resonant excitation of a magnetic vortex core is investigated by means of analytical and micromagnetic calculations. We find that the radius and the phase shift of the resonant motion are not correctly described by the analytical equations because of the dynamic distortion of a vortex core. In contrast, the initial tilting angle of a vortex core is free from the distortion and determined by the nonadiabaticity of the spin torque. It is insensitive to experimentally uncontrollable current-induced in-plane Oersted field. We propose that a time-resolved imaging of the very initial trajectory of a core is essential to experimentally estimate the nonadiabaticity.Comment: 4 pages, 4 figure

The rise of the labor movement and the development of internal labor market in the Korean manufacturing industry

The object of this paper was to examine whether the rise of the labor movement brought about the segmentation of the blue collar labor market and the development of the firm internal labor market(FILM) in Korea after 1987. We found that it did. The employment stability of workers in large firms has increased and wage differential by firm size has been enlarged. The male blue collar workers in the large firms prefer to stay in a firm rather than to move among firms. One of the factors that resulted in segmentation is that Korean labor unions are enterprise unions

Learning and Adaptation of Contingent Workers in South Korea Corporations: A Study of Developmental Relationships

Developmental relationships have been considered an important factor for leaning and adaptation of workers. This paper aims to discover how the learning and adaptation of contingent workers differ from those of regular workers and focuses on developmental relationships in South Korea corporations

Quality Dimensions Affecting Online Luxury Consumers: Does Gender Matter?

The purpose of this study is to examine how men and women differ in their perceptions of website quality in the context of luxury fashion e-retailing. The findings of this study show that similarities and differences exist between male and female luxury consumers’ perceptions of e-luxury retail sites