Spin-polarized tunneling between ferromagnetic films
| ISSN: |
1089-7550
|
|---|---|
| Source: |
AIP Digital Archive
|
| Topics: |
Physics
|
| Notes: |
Using a tunneling Hamiltonian including spin-flip effect, we derive general expressions for spin-polarized tunneling conductances as well as magnetoresistance (MR) in ferromagnetic/ insulator/ferromagnetic junctions. The spin-dependent density of states due to exchange splitting is responsible for the large negative MR, and the spin-flip tunneling is found to diminish the magnitude of MR. Qualitative agreement is obtained between our theoretical results and recent experimental data. © 1996 American Institute of Physics.
|
| Type of Medium: |
Electronic Resource
|
| URL: |