Skip to main content
placeholder image

Magnetic modulation of terahertz waves via spin-polarized electron tunneling

Conference Paper


Abstract


  • We demonstrate that the tunneling magnetoresistance (TMR) can be used to modulate terahertz (THz) wave propagation through a magnetic tunnel junctions (MTJ). Operating at the THz frequency range, a maximal modulation depth of 60% is reached for the parallel state of the MTJ with the thickness of 77.45 nm, by using a small magnetic field of 30 mT. The THz conductivity spectrum of the MTJ is governed by the spin-dependent electron tunneling. This findings open that the MTJ device will have potential applications in THz magnetic modulators, filtering and sensing.

Publication Date


  • 2021

Citation


  • Jin, Z., Wan, C., Han, X., Cheng, Z., Zhang, C., Balakin, A. V., . . . Zhuang, S. (2021). Magnetic modulation of terahertz waves via spin-polarized electron tunneling. In International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz Vol. 2021-August. doi:10.1109/IRMMW-THz50926.2021.9567553

Scopus Eid


  • 2-s2.0-85125325897

Web Of Science Accession Number


Volume


  • 2021-August

Abstract


  • We demonstrate that the tunneling magnetoresistance (TMR) can be used to modulate terahertz (THz) wave propagation through a magnetic tunnel junctions (MTJ). Operating at the THz frequency range, a maximal modulation depth of 60% is reached for the parallel state of the MTJ with the thickness of 77.45 nm, by using a small magnetic field of 30 mT. The THz conductivity spectrum of the MTJ is governed by the spin-dependent electron tunneling. This findings open that the MTJ device will have potential applications in THz magnetic modulators, filtering and sensing.

Publication Date


  • 2021

Citation


  • Jin, Z., Wan, C., Han, X., Cheng, Z., Zhang, C., Balakin, A. V., . . . Zhuang, S. (2021). Magnetic modulation of terahertz waves via spin-polarized electron tunneling. In International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz Vol. 2021-August. doi:10.1109/IRMMW-THz50926.2021.9567553

Scopus Eid


  • 2-s2.0-85125325897

Web Of Science Accession Number


Volume


  • 2021-August