Spin-polarized surface-emitting lasers

We investigate the growth, fabrication, and characterization of an electrically-injected spin-polarized laser utilizing an Fe/ n + -Al 0.1 Ga 0.9 As Schottky tunnel barrier for efficient spin injection into an InGaAs quantum well vertical-cavity surface-emitting laser. A threshold current reduction of 11% and maximum degree of circular polarization of 23% are observed for a 15 µm mesa diameter laser at 50 K. The lack of a threshold current reduction and circularly-polarized electroluminescence in similar nonmagnetic and Fe control lasers provides further evidence of spin injection. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/55981/1/4396_ftp.pd

Molecular Spintronics

Molecular spintronics is recognized to as an attractive new research direction in a field of spintronics, following to metallic spintronics and inorganic semiconductor spintronics, and attracts many people in recent decades. The purpose of this manuscript is to describe the history of molecular spintronics by introducing important achievements and to show the current status of this field. In addition, the authors briefly introduce several theories for implementing studies in molecular spintronics.Comment: 66 pages, 32 figures (To appear in Physica E as an invited review article