Abstract
Giant magnetoresistance has been observed in both magnetic multilayers and magnetic granular solids. We develop a framework for unifying these particular realizations of inhomogeneous magnetic media, based on the real-space Kubo formula. It constitutes a spin-dependent form of linear response theory, associated with internal spin-dependent fields arising from spin accumulation; moreover, we discuss the physical meaning of these spin dependences. For magnetic multilayers we discuss the particular cases of collinear and noncollinear configurations, and we consider limiting cases of the elastic mean-free path to inhomogeneity-scale ratio for granular solids. Furthermore, we introduce the concept of magnetically self-averaging systems, which include the current perpendicular to the plane geometry of multilayers and granular solids. In the limit of no spin-flip scattering, we show that there are no length scales associated with the magnetoresistance of self-averaging structures.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 16052-16072 |
| Number of pages | 21 |
| Journal | Physical Review B |
| Volume | 51 |
| Issue number | 22 |
| DOIs | |
| State | Published - 1995 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Electron transport in magnetic inhomogeneous media. / Camblong, Horacio E.; Levy, Peter M.; Zhang, Shufeng.
In: Physical Review B, Vol. 51, No. 22, 1995, p. 16052-16072.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electron transport in magnetic inhomogeneous media
AU - Camblong, Horacio E.
AU - Levy, Peter M.
AU - Zhang, Shufeng
PY - 1995
Y1 - 1995
N2 - Giant magnetoresistance has been observed in both magnetic multilayers and magnetic granular solids. We develop a framework for unifying these particular realizations of inhomogeneous magnetic media, based on the real-space Kubo formula. It constitutes a spin-dependent form of linear response theory, associated with internal spin-dependent fields arising from spin accumulation; moreover, we discuss the physical meaning of these spin dependences. For magnetic multilayers we discuss the particular cases of collinear and noncollinear configurations, and we consider limiting cases of the elastic mean-free path to inhomogeneity-scale ratio for granular solids. Furthermore, we introduce the concept of magnetically self-averaging systems, which include the current perpendicular to the plane geometry of multilayers and granular solids. In the limit of no spin-flip scattering, we show that there are no length scales associated with the magnetoresistance of self-averaging structures.
AB - Giant magnetoresistance has been observed in both magnetic multilayers and magnetic granular solids. We develop a framework for unifying these particular realizations of inhomogeneous magnetic media, based on the real-space Kubo formula. It constitutes a spin-dependent form of linear response theory, associated with internal spin-dependent fields arising from spin accumulation; moreover, we discuss the physical meaning of these spin dependences. For magnetic multilayers we discuss the particular cases of collinear and noncollinear configurations, and we consider limiting cases of the elastic mean-free path to inhomogeneity-scale ratio for granular solids. Furthermore, we introduce the concept of magnetically self-averaging systems, which include the current perpendicular to the plane geometry of multilayers and granular solids. In the limit of no spin-flip scattering, we show that there are no length scales associated with the magnetoresistance of self-averaging structures.
UR - http://www.scopus.com/inward/record.url?scp=0001573662&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001573662&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.51.16052
DO - 10.1103/PhysRevB.51.16052
M3 - Article
AN - SCOPUS:0001573662
VL - 51
SP - 16052
EP - 16072
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 22
ER -