Spin-filter diode based on ZnSe/Zn1-xMnxSe/Zn 1-yMnySe/ZnSe heterostructures

Yong Guo, Xin Yi Chen, Feng Zhai, Bing Lin Gu, Yoshiyuki Kawazoe

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


We propose and demonstrate a spin-filter diode based on semimagnetic semiconductor ZnSe/Zn1-xMnxSe/Zn1-yMn ySe/ZnSe heterostructures. It is found that the degree of spin polarization greatly depends on the electric field direction and its magnitude. There is significant difference of the spin polarization between under forward bias and under reverse bias. It is also found that the spin polarization will reverse under relatively small magnetic field, which is originated from resonant enhancement effect for spin-up electrons tunneling through effective steplike potential of the corresponding structure.

Original languageEnglish
Pages (from-to)4591-4593
Number of pages3
JournalApplied Physics Letters
Issue number24
Publication statusPublished - 2002 Jun 17


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