Calculation of Resistivity of the Insulating Layer in Tunnelling-Magnetoresistive Head by Fast Green Function Method
WEI Dan, PIAO Kun, QIN Jian, DONG Zhong
Lab of Advanced Materials, Dept. of Materials Science and Engineering, Tsinghua University, Beijing 100084
Calculation of Resistivity of the Insulating Layer in Tunnelling-Magnetoresistive Head by Fast Green Function Method
WEI Dan;PIAO Kun;QIN Jian;DONG Zhong
Lab of Advanced Materials, Dept. of Materials Science and Engineering, Tsinghua University, Beijing 100084
关键词 ：
75.50.Ss ,
73.40.Rw ,
72.10.Bg ,
73.23.Ad ,
75.47.De
Abstract ： We calculate the resistivity of the insulating layer in a tunnelling-magnetoresistive (TMR) magnetic head by using the Landauer--Büttiker formula with a fast Green function method, where a recursive process with a faster simulation speed and higher accuracy is carried out to substitute the inversion of Green’s matrix. A tight-binding model with an energy barrier ΔE is utilized to simulate the magnetoresistive tunnelling junction in the TMR head. The resistivity of the insulating layer is 2.6×105 μΩcm with two oxygen-ion layers and ΔE=2.5eV, which agrees with the experimental data.
Key words ：
75.50.Ss
73.40.Rw
72.10.Bg
73.23.Ad
75.47.De
出版日期: 2005-08-01
:
75.50.Ss
(Magnetic recording materials)
73.40.Rw
(Metal-insulator-metal structures)
72.10.Bg
(General formulation of transport theory)
73.23.Ad
(Ballistic transport)
75.47.De
(Giant magnetoresistance)
引用本文:
WEI Dan;PIAO Kun;QIN Jian;DONG Zhong. Calculation of Resistivity of the Insulating Layer in Tunnelling-Magnetoresistive Head by Fast Green Function Method[J]. 中国物理快报, 2005, 22(8): 2063-2065.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I8/2063
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