J. Semicond. > 2015, Volume 36 > Issue 3 > 034004
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SEMICONDUCTOR DEVICES

Voltage assisted control of spin-transfer nano-oscillators

Bahniman Ghosh1 and Gaurav Solanki2

+ Author Affiliations

 Corresponding author: Bahniman Ghosh, E-mail: bghosh@utexas.edu

DOI: 10.1088/1674-4926/36/3/034004

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Abstract: The spin-transfer nano-oscillator (STNO) has recently acquired a huge amount of research interest, due to its promising easy tunability along with the miniature size. The output frequency control of an STNO through magnetic field and current has been examined almost to its full extent; however, there are issues that still need to be addressed. Here, we propose a novel way of voltage control of the output frequency of an STNO, and alongside reducing its power requirement.

Key words: spin-transfer nano-oscillator, voltage controlled magnetic anisotropy, tunnelling magnetoresistance



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Fig. 1.  (a) A typical device configuration of an STNO. (b) Typical oscillation produced by an STNO.

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Fig. 2.  Proposed structure of voltage (assisted) controlled STNO.

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Fig. 3.  Frequency dependence on applied current in normal STNO.

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Fig. 4.  Effect of VCMA on STNO as compared directly with the natural state, i.e. an inert STNO at currents of (a) 0.6 mA, (b) 0.7 mA, (c) 0.8 mA.

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Fig. 5.  Effect of oxide material at 0.6 mA.

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Fig. 6.  Effect of oxide material at 0.7 mA.

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Fig. 7.  Effect of oxide material at 0.8 mA.

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    Received: 13 August 2014 Revised: Online: Published: 01 March 2015

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      Article Navigation >  Journal of Semiconductors  > 2015  >  36(3): 034004
      Bahniman Ghosh, Gaurav Solanki. Voltage assisted control of spin-transfer nano-oscillators[J]. Journal of Semiconductors, 2015, 36(3): 034004. doi: 10.1088/1674-4926/36/3/034004 ****B Ghosh, G Solanki. Voltage assisted control of spin-transfer nano-oscillators[J]. J. Semicond., 2015, 36(3): 034004. doi: 10.1088/1674-4926/36/3/034004.
      Citation:
      Bahniman Ghosh, Gaurav Solanki. Voltage assisted control of spin-transfer nano-oscillators[J]. Journal of Semiconductors, 2015, 36(3): 034004. doi: 10.1088/1674-4926/36/3/034004 ****
      B Ghosh, G Solanki. Voltage assisted control of spin-transfer nano-oscillators[J]. J. Semicond., 2015, 36(3): 034004. doi: 10.1088/1674-4926/36/3/034004.
      shu

      Voltage assisted control of spin-transfer nano-oscillators

      DOI: 10.1088/1674-4926/36/3/034004
      • 1.

        Microelectronics Research Center, 10100 Burnet Road, University of Texas at Austin, Austin, TX, 78758, USA

      • 2.

        Department of Electrical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India

      More Information
      • Corresponding author: E-mail: bghosh@utexas.edu
      • Received Date: 2014-08-13
      • Accepted Date: 2014-10-28
      • Published Date: 2015-01-25

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