Low-Frequency Nonresonant Rectification in Spin Diodes

R. Tomasello, B. Fang, P. Artemchuk, M. Carpentieri, L. Fasano, A. Giordano, O.V. Prokopenko, Z.M. Zeng, and G. Finocchio
Phys. Rev. Applied 14, 024043 – Published 17 August 2020

Abstract

Spin diodes are usually resonant in nature (GHz frequency) and tunable by magnetic field and bias current with performances, in terms of sensitivity and minimum detectable power, overcoming the semiconductor counterpart, i.e., Schottky diodes. Recently, spin diodes characterized by a low-frequency detection (MHz frequency) have been proposed. Here, we show a strategy to design low-frequency detectors based on magnetic tunnel junctions with the interfacial perpendicular anisotropy of the same order of the demagnetizing field out-of-plane component. Micromagnetic calculations show that, to reach this detection regime, a threshold input power has to be overcome and the phase shift between the oscillation magnetoresistive signal and the input radiofrequency current plays a key role in determining the value of the rectification voltage.

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  • Received 12 March 2020
  • Revised 14 July 2020
  • Accepted 14 July 2020

DOI:https://doi.org/10.1103/PhysRevApplied.14.024043

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

R. Tomasello1,*, B. Fang2,§, P. Artemchuk3,4, M. Carpentieri5, L. Fasano6, A. Giordano7, O.V. Prokopenko3, Z.M. Zeng2,†, and G. Finocchio7,‡

  • 1Institute of Applied and Computational Mathematics, FORTH, GR-70013, Heraklion-Crete, Greece
  • 2Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, CAS, Suzhou, Jiangsu 215123, People’s Republic of China
  • 3Faculty of Radiophysics, Electronics and Computer Systems, Taras Shevchenko National University of Kyiv, Kyiv 01601, Ukraine
  • 4Department of Physics, Oakland University, Rochester, Michigan 48309, USA
  • 5Department of Electrical and Information Engineering, Politecnico of Bari, via Orabona 4, 70125 Bari, Italy
  • 6Italian Space Agency (ASI), Rome, Italy
  • 7Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, I-98166, Messina, Italy

  • *rtomasello@iacm.forth.gr
  • zmzeng2012@sinano.ac.cn
  • gfinocchio@unime.it
  • §Present address: Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 239556900, Saudi Arabia.

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Vol. 14, Iss. 2 — August 2020

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