| MgB2和Mg0.93Li0.07B2的电阻率与霍尔效应研究 |
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| 引用本文： | 李慧玲,阮可青,李世燕,莫维勤,樊荣,罗习刚,陈仙辉,曹烈兆. MgB2和Mg0.93Li0.07B2的电阻率与霍尔效应研究[J]. 物理学报, 2001, 50(10): 2044-2048 |
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| 作者姓名： | 李慧玲 阮可青 李世燕 莫维勤 樊荣 罗习刚 陈仙辉 曹烈兆 |
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| 作者单位： | 中国科学技术大学结构分析开放实验室,物理系,合肥230026 |
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| 基金项目： | 国家重点基础研究专项经费(批准号:G19990646)资助的课题. |
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| 摘 要： | 测量了MgB2和Mg0.93Li0.07B2的电阻率ρ(T)与霍尔系数RH(T)的温度依赖关系.电阻率的测量结果表明,MgB2和Mg0.93Li0.07B2的正常态电阻率与温度有平方的依赖关系.MgB2和Mg0.93Li0.07B2关键词：电阻率霍尔效应
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| 关 键 词： | 电阻率 霍尔效应 |
| 收稿时间： | 2001-05-17 |
| 修稿时间： | 2001-05-17 |
STUDY ON THE RESISTIVITY AND HALL EFFECT OF MgB2 AND Mg0.93Li0.07B2 |
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| LI HUI-LING,RUAN KE-QING,LI SHI-YAN,MO WEI-QIN,FAN RONG,LUO XI-GANG,CHEN XIAN-HUI and CAO LIE-ZHAO. STUDY ON THE RESISTIVITY AND HALL EFFECT OF MgB2 AND Mg0.93Li0.07B2[J]. Acta Physica Sinica, 2001, 50(10): 2044-2048 |
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| Authors: | LI HUI-LING RUAN KE-QING LI SHI-YAN MO WEI-QIN FAN RONG LUO XI-GANG CHEN XIAN-HUI CAO LIE-ZHAO |
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| Abstract: | The temperature dependences of resistivity and Hall coefficient of MgB2 and Mg0.93Li0.07B2 were measured, and the temperature dependence of cot-ΘH was calculated. The result of resistivity indicates that MgB2 and Mg0.93Li0.07B2 nearly have the same transition temperature. The-possible effect on transition temperature has been discussed. The measurement of Hall coefficient suggests the type of charge carriers is hole, and the Hall coefficient of Mg0.93Li0.07B2 becomes a little smaller compared with that of MgB2 which is attributed to Li doping . Both the decrease with increasing temperature-and-the temperature dependence of cotangent of Hall angle are proportional to the square of temperature. |
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| Keywords: | resistivity Hall effect |
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