Multi-Frequency EPR and DC Conductivity of Itinerant Spins in Single-Wall Carbon Nanotubes
Multi-Frequency EPR and DC Conductivity of Itinerant Spins in Single-Wall Carbon Nanotubes
复制标题
单壁碳纳米管中巡回自旋的多频 EPR 和直流电导率
DOI:
10.1007/s00723-009-0084-5
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发表时间:
2010
影响因子:
1
通讯作者:
B. Corziliu
中科院分区:
文献类型:
--
作者:
K.-P. Dinse;J. van Tol;A. Ozarowski;B. Corziliu
Sealed, deoxygenated single-wall carbon nanotubes show two characteristic electron paramagnetic resonance (EPR) signals atg= 2.07 andg= 2.00 in the temperature range from 300 to 50 K. Reversible interconversion between both components was observed. The largeg-shift and the temperature dependence of the EPR susceptibility of theg= 2.07 signal indicate that this signal can be attributed to itinerant spins. At low temperatures only theg= 2.00 signal remained, which could be further characterized using microwave frequencies up to 320 GHz. The direct current conductivity of a partially aligned sample was also measured. The room temperature value was estimated as 0.7 (Ωcm)−1. The observed temperature dependence can be described by assuming temperature-activated hopping in a small-gap semiconductor with an activation energy of 3.5 meV, similar to the characteristics of the previously measured 9.4 GHz microwave conductivity.
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DOI:
10.1039/b707936m
发表时间:
2007-11
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
B. Corzilius;K. Dinse;K. Hata
通讯作者:
B. Corzilius;K. Dinse;K. Hata
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
B. Corzilius;K. Dinse;J. Slageren;K. Hata
通讯作者:
K. Hata
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
P. Byszewski;A. Nabiałek
通讯作者:
A. Nabiałek
影响因子:
3.7
作者:
D. Peligrad;B. Nebendahl;C. Kessler;M. Mehring;A. Dulčić;M. Požek;D. Paar
通讯作者:
D. Paar