Journal of Jishou University(Natural Sciences Edition)

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Regulation of Spin Filtering Effect in Chrome-Porphyrin Molecules Based on Different Connection Configurations

LI Meihua, YE Fuqiu, ZHANG Jun   

  1. (College of Physics and Electromechanical Engineering, Jishou University, Jishou 416000, Hunan China)
  • Online:2019-07-25 Published:2019-07-31


The first principle method has been used to calculate and analyze the electron spin transport properties of chrome-porphyrin molecule with different connection configurations. The results showed that chrome-porphyrin molecules with diagonal connection configuration had more than 95% spin polarization at 0~0.2 V bias voltage, and the conductivity of horizontal connection configuration was one order higher than that of diagonal connection configuration. By changing the connection configuration and then changing the molecular orbital distribution and transport path of the electron spin front, the spin filtering effect can be realized and the electron spin transport properties of chrome-porphyrin molecular devices based on different connection configurations can be effectively regulated.

Key words: chrome-porphyrin molecule, spin-dependent electron transport, molecular connection configuration, spin filtering effect

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