Inelastic-light-scattering in Cdf0.95Mn0.05Se:In near the metal-to-insulator transition

✍ Scribed by E.D. Isaacs; T. Dietl; M. Sawicki; D. Heiman; M. Dahl; M.J. Graf; S.I. Gubarev; D.L. Alov

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 157 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(90)80967-n

✦ Synopsis

Inelastic-light-scattering measurementson Cd,.,Mn,Se:In, x=0.05, near the metal-to-insulator transition are made in a dilution refrigerator down to T-O.25 K. The electron spin splitting increases dramatically for decreasing temperamre, and at low fields can be expressed as an effective g-factor increasing to a value of g-500. Spectral linewidths in back scattering (large q-vector) are broader than for forward scattering, demonstrating the diffusive character of the delocalized electrons. Comparison of these linewidths give values for the spin-relaxation time Tz and spin-diffusion coefficients D,. We discuss the temperature and field dependencies of these quantities on the metallic side of the metal-to-insulator transition.