| 谐振式隧穿磁强计的理论研究 |
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| 引用本文： | 汤学华,尤政,杨建中.谐振式隧穿磁强计的理论研究[J].微纳电子技术,2003(Z1). |
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| 作者姓名： | 汤学华 尤政 杨建中 |
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| 作者单位： | 清华大学精仪系 北京100084
(汤学华，尤政)，清华大学精仪系 北京100084(杨建中) |
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| 摘 要： | 分析了隧道扫描显微镜和隧穿磁强计的区别 ,认为隧穿磁强计的隧尖不需要也不应该过尖。研究了隧道间隙和隧道电流的关系。研究表明 ,虽然按照隧道效应理论 ,隧道间隙和隧道电流应该成指数关系 ,但对隧穿磁强计而言 ,其隧道电流和隧道间隙的关系可以近似看作线性关系。推导了谐振式隧穿磁强计的灵敏度计算公式
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| 关 键 词： | 隧穿 磁强计 隧道间隙 灵敏度 |
Theoretical study on resonant tunneling magnetometer |
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| TANG Xue hua,YOU Zheng,YANG Jian zhong.Theoretical study on resonant tunneling magnetometer[J].Micronanoelectronic Technology,2003(Z1). |
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| Authors: | TANG Xue hua YOU Zheng YANG Jian zhong |
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| Abstract: | Based on the analysis of the differences between STM and tunneling magnetometer, the idea that the pointed end of detector needn't be too sharp is raised. As far as the relationship between tunneling spacing and tunneling current is concerned, it shows that although such relationship is originally considered as exponential according to tunneling theory, it can still be approximately perceived as linear when tunneling magnetometer is dealt with. Finally, the equation of sensitivity is deduced. |
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| Keywords: | tunneling magnetometer tunneling spacing sensitivity |
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