Files in this item



application/pdf1987_osofsky.pdf (8MB)


Title:Spin-orbit scattering and E-field effects in discordered metals near the metal-insulator transition
Author(s):Osofsky, Michael Steven
Doctoral Committee Chair(s):Mochel, J.M.
Department / Program:Physics
Subject(s):spin-orbit scattering
disordered metals
metal-insulator transition
Abstract:The results of two studies of disordered metals near their metal-insulator transition are presented: (i) A detailed comparison of GexAu1-x and BxCu1-x is carried out in zero magnetic field. GeAu, a high Z material, has been shown to e xh1bit strong spin-orbit effects in a magnetic field while 8Cu, a low Z material, has been shown to exhibit weak spin-orbit effects. Both materials have similar temperature dependent de conductivity behavior in zero field and approximately linear mobility edges; CiilA detailed stud~ of the non-linear dc conductivitu of GeAu and Cx - Cu1-x is carried out for 1.3K< data in the context of an electron gas heating model fields unphysically long electron relaxation times. Alternatively, the E-field can limit renormalization by raising the electron energy above the disordered potential. The s~stem then changes from quantum mechanical scaling to classically diffusive behavior beyond a certain length scale . The temperature and E-field data can then give the characteristic lengths and prefactors for the transition.
Issue Date:1987
Genre:Dissertation / Thesis
Rights Information:1987 Michael Steven Osofsky
Date Available in IDEALS:2011-06-02
Identifier in Online Catalog:1411790

This item appears in the following Collection(s)

Item Statistics