HOPPING CONDUCTION IN PARTIALLY COMPENSATED DOPED SILICON

被引:55
作者
ZHANG, J [1 ]
CUI, W [1 ]
JUDA, M [1 ]
MCCAMMON, D [1 ]
KELLEY, RL [1 ]
MOSELEY, SH [1 ]
STAHLE, CK [1 ]
SZYMKOWIAK, AE [1 ]
机构
[1] NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA
来源
PHYSICAL REVIEW B | 1993年 / 48卷 / 04期
关键词
D O I
10.1103/PhysRevB.48.2312
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have measured the dc electrical resistance of partially compensated (5-50%)_ion-implanted Si:P,B (both n and p type), over the temperature range 0.05-30 K. The temperature behavior is consistent with the prediction of the model for variable-range hopping (VRH) with a Coulomb gap rho(T)=rho0exp(T0/T)1/2 over a temperature range 6.5 < T0/T < 24. We observe deviations from this behavior at our high- and low-temperature extremes. In the low-temperature region, the resistivities show a stronger temperature dependence than the Coulomb-gap model prediction. The high-temperature deviation appears consistent with a transition from Coulomb-gap VRH to Mott VRH.
引用
收藏
页码:2312 / 2319
页数:8
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