| 由隧道电子谱微分电导极大值确定超导体能隙的新方法 |
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| 引用本文： | 李宏成,王瑞兰,王平书,管惟炎.由隧道电子谱微分电导极大值确定超导体能隙的新方法[J].物理学报,1986,35(2):266-268. |
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| 作者姓名： | 李宏成 王瑞兰 王平书 管惟炎 |
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| 作者单位： | 中国科学院物理研究所 |
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| 摘 要： | 本文给出一种确定超导体能隙的新方法,由隧道理论计算出Vmax/kT与Δ/kT的关系曲线,微分电导极大值电压Vmax由隧道电子谱测定,由Vmax/kT值及上述曲线很容易计算出能隙Δ值。这种方法很简单,而准确度几乎接近于曲线拟合法。
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| 收稿时间： | 1985-03-18 |
A NEW METHOD FOR DETERMINING THE ENERGY GAP OF A SUPERCONDUCTOR USING THE MAXIMUM IN DIFFERENTIAL CONDUCTANCE OF ELECTRON TUNNELING SPECTRUM |
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| LI HONG-CHENG,WANG RUI-LAN,WANG PING-SHU and GUAN WEI-YEN.A NEW METHOD FOR DETERMINING THE ENERGY GAP OF A SUPERCONDUCTOR USING THE MAXIMUM IN DIFFERENTIAL CONDUCTANCE OF ELECTRON TUNNELING SPECTRUM[J].Acta Physica Sinica,1986,35(2):266-268. |
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| Authors: | LI HONG-CHENG WANG RUI-LAN WANG PING-SHU and GUAN WEI-YEN |
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| Abstract: | A new method for determining the energy gap of a superconductor using the maximum in the differential conductance curve of electron tunneling spectrum is given in this paper. The Vmax/kT versus △/kT curve was caculated from tunneling theory, Vmax, the voltage of the conductance maximum, can be measured from electron tunneling spectrum.△/kT can be found from this curve, then the energy gap △ can be caeulated. This method is simple, fast and accurate. The accuracy almost approaches that of the curve fitting method. |
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