University of Illinois Urbana-Champaign

Spin-orbit scattering and E-field effects in discordered metals near the metal-insulator transition

Osofsky, Michael Steven

Content Files
1987_osofsky.pdf

Permalink

https://hdl.handle.net/2142/25213

Description

Title
Spin-orbit scattering and E-field effects in discordered metals near the metal-insulator transition
Author(s)
Osofsky, Michael Steven
Issue Date
1987
Doctoral Committee Chair(s)
Mochel, J.M.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Date of Ingest
2011-06-02T14:57:10Z
Keyword(s)
  • spin-orbit scattering
  • E-field
  • disordered metals
  • metal-insulator transition
Language
en
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.
Type of Resource
text
Permalink
http://hdl.handle.net/2142/25213
Copyright and License Information
1987 Michael Steven Osofsky

Owning Collections

Dissertations and Theses - Physics
Dissertations in Physics
Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois