CONDUCTION PROCESSES IN THE LAYERED SEMICONDUCTOR COMPOUND FEPS3

被引：19

作者：

GRASSO, V ^{[1
]}

NERI, F ^{[1
]}

PATANE, S ^{[1
]}

SILIPIGNI, L ^{[1
]}

PIACENTINI, M ^{[1
]}

机构：

[1] UNIV ROME LA SAPIENZA, DIPARTIMENTO ENERGET, I-00185 ROME, ITALY

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.42.1690

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured, as a function of temperature, the thermopower, the dc conductivity, and photoconductivity of FePS3 single crystals. For temperatures below 430 K the thermopower shows an activated behavior, whereas at higher temperatures it is almost temperature independent. The dc dark conductivity and photoconductivity are thermally activated over the entire investigated temperature range. Moreover, ac-conductivity measurements have been carried out as a function of both temperature and frequency from 400 Hz to 100 kHz in the 340 "500-K temperature region. The transport mechanisms involved in different temperature ranges have been identified. The results have been interpreted on the basis of a simplified energy-band scheme. © 1990 The American Physical Society.

引用

页码：1690 / 1695

页数：6

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