CAJ | 학술논문

利用转移矩阵法计算了含周期性Dresselhaus自旋轨道耦合量子线中电子的透射率。结果表明周期性的Dresselhaus自旋轨道耦合会使透射率产生一定宽度的能隙，通过调节自旋轨道耦合强度或者周期单元中两区域的比例长度可以控制能隙的宽度。进一步研究表明当电子入射的能量在能隙范围内的时候，电子被禁止通过，而在能隙外时，电子可以通过，从而实现“关”和“开”的状态。这些效应说明所研究的体系也许能用来设计纳米电子器件。
이용전이구진법계산료함주기성Dresselhaus자선궤도우합양자선중전자적투사솔。결과표명주기성적Dresselhaus자선궤도우합회사투사솔산생일정관도적능극，통과조절자선궤도우합강도혹자주기단원중량구역적비례장도가이공제능극적관도。진일보연구표명당전자입사적능량재능극범위내적시후，전자피금지통과，이재능극외시，전자가이통과，종이실현“관”화“개”적상태。저사효응설명소연구적체계야허능용래설계납미전자기건。
The electron transmission of a Dresselhaus Quantum Wire (QW) is calculated with the transfer matrix method. The transmission gaps can emerge as a result of the effects of the Dresselhaus Spin-Orbit Coupling (SOC). The width of the gap also can be controlled by the length ratios of each segment or the strengths of SOC. Further studies show that when the incident electrons with energies is within this gap, electrons cannot transmit through the quantum wire; when it is beyond, they can transmit. Hence the switch effect of “ON” and “OFF” can be achieved. Those results may provide an effective way to design a nanometer electronic device.