Details
| Original language | English |
|---|---|
| Pages (from-to) | 3737-3749 |
| Number of pages | 13 |
| Journal | Journal of Physics C: Solid State Physics |
| Volume | 21 |
| Issue number | 20 |
| Publication status | Published - 20 Jul 1988 |
Abstract
The electrical conductivity and optical absorption of NbO2.5-x (0.005<x<0.08) are described by polaron ground states. Correlated hopping and polaronic absorption of weakly disordered systems are observed in the regime of low carrier concentration (x<0.05). Bipolarons and single polarons are both stable in this regime. At higher carrier concentrations, quasi-metallic conductivity and saturated polaron concentrations are described as being due to the superposition of polaron groundstates and quasi-free electrons. The saturation concentration yields a critical distance of about 10 AA between polarons. The threshold value of x=0.05 is related to the geometrical properties of the NbO2.5-x structures.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- General Engineering
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Journal of Physics C: Solid State Physics, Vol. 21, No. 20, 20.07.1988, p. 3737-3749.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The effect of high polaron concentration on the polaron transport in NbO2.5-x
T2 - Optical and electrical properties
AU - Ruscher, C.
AU - Salje, E.
AU - Hussain, A.
PY - 1988/7/20
Y1 - 1988/7/20
N2 - The electrical conductivity and optical absorption of NbO2.5-x (0.0052.5-x structures.
AB - The electrical conductivity and optical absorption of NbO2.5-x (0.0052.5-x structures.
UR - http://www.scopus.com/inward/record.url?scp=0000883681&partnerID=8YFLogxK
U2 - 10.1088/0022-3719/21/20/009
DO - 10.1088/0022-3719/21/20/009
M3 - Article
AN - SCOPUS:0000883681
VL - 21
SP - 3737
EP - 3749
JO - Journal of Physics C: Solid State Physics
JF - Journal of Physics C: Solid State Physics
SN - 0022-3719
IS - 20
ER -