Manipulation of the magnetoresistance effect in a double-helix DNA
Manipulation of the magnetoresistance effect in a double-helix DNA
复制标题
双螺旋 DNA 磁阻效应的调控
DOI:
10.1088/1361-648x/aae567
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发表时间:
2018-10
期刊:
影响因子:
--
通讯作者:
Wang Xue-Feng
中科院分区:
文献类型:
--
作者:
Li Yao-Sheng;Wang Xue-Feng
Magnetoresistance (Rm) of a double-stranded (G:C)N DNA sandwiched between ferromagnetic electrodes has been studied using the transfer matrix method of the tight-binding model. A Rm magnitude up to 72.5% for DNA in its natural structure is observed when the spin–orbit coupling with the helix spring geometry and a possible dephasing effect are taken into account. It can be greatly manipulated by stress or torque applied to the DNA with respect to its axis. In addition, the external voltage bias can also be used to efficiently control Rm. The dependence of Rm on the DNA length in a decaying oscillation form is observed.
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