本文研究了正常金属／铁磁体组成的量子线与d波超导体构成的量子点接触隧道结（N／FM／SC）中的隧道谱。利用推广的Blonder-Tinkham-Klapwijk（BTK）理论模型，求解Bogoliubov-deGennes方程，计算N／FM／SC量子点接触隧道结中的微分电导．数值计算结果表明：1）中间量子线的长度以及晶轴方向会影响隧道谱的振荡周期；2）散射势垒强度影响隧道谱的峰高，铁磁体磁交换能会使峰位产生偏移．
We have studied the quantum point contact tunneling spectroscopy in the normal metal/ferromagnet/dwave superconductor (N/FM/SC) junction. By applying extended the Blonder-Tinkham-Klapwijk approach, we calculated the differential conductance of N / FM / SC quantum point contact tunnelling junction by solving the Bogoliubov-de Gennes equation. And our numerical calculation demonstrated that: 1) The length of the quantum wire and the orientation of crystal axis affect the period of oscillation of the tunneling spectroscopyl 2) The strength of scattering barrier determines the height of peaks, and the exchange energy of ferromagnet results in a shift of the peak position.
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