Hostname: page-component-76fb5796d-5g6vh Total loading time: 0 Render date: 2024-04-25T19:19:10.800Z Has data issue: false hasContentIssue false
  • English
  • Français

Spin Wave Based Logic Circuits

Published online by Cambridge University Press:  21 March 2011

Alexander Khitun ,
Mingqiang Bao ,
Joo-Young Lee ,
Kang Wang ,
Dok Won Lee  and
Shan Wang
Alexander Khitun
Affiliation:
Electrical Engineering, University of California Los Angeles, 420 Westwood Plaza, Box 951594, Los Angeles, CA, 90095-1594
Mingqiang Bao
Affiliation:
Electrical Engineering, University of California Los Angeles, 420 Westwood Plaza, Box 951594, Los Angeles, CA, 90095-1594
Joo-Young Lee
Affiliation:
Electrical Engineering, University of California Los Angeles, 420 Westwood Plaza, Box 951594, Los Angeles, CA, 90095-1594
Kang Wang
Affiliation:
Electrical Engineering, University of California Los Angeles, 420 Westwood Plaza, Box 951594, Los Angeles, CA, 90095-1594
Dok Won Lee
Affiliation:
Stanford University, Stanford, CA, 94305-4045
Shan Wang
Affiliation:
Stanford University, Stanford, CA, 94305-4045
Get access

Abstract

We investigate spin wave propagation and interference in conducting ferromagnetic nanostructures for potential application in spin wave based logic circuits. The novelty of this approach is that information transmission is accomplished without charge transfer. A bit of information is encoded into the phase of spin wave propagating in a nanometer thick ferromagnetic film. A set of “AND”, “NOR”, and “NOT” logic gates can be realized in one device structure by utilizing the effect of spin wave superposition. We present experimental data on spin wave transport in 100nm CoFe films at room temperature obtained by the propagation spin wave spectroscopy technique. Spin wave transport has been studied in the frequency range from 0.5 GHz to 6.0 GHz under different configurations of the external magnetic field. Both phase and amplitude of the spin wave signal are sensitive to the external magnetic field showing 60Deg/10G and 4dB/20G modulation rates, respectively. Potentially, spin wave based logic circuits may compete with traditional electron-based ones in terms of logic functionality and power consumption. The shortcomings of the spin wave based circuits are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 998: Symposium J – Nanoscale Magnetics and Device Applications , 2007 , 998-J06-05
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Datta, S. and Das, B., Electronic analog of the electro-optic modulator. Applied Physics Letters, 1990. 56(7): p. 665–7.Google Scholar
2. Prinz, G.A., Magnetoelectronics. Science, 1998. 282: p. 1660–63.Google Scholar
3. Wolf, S.A., Awschalom, D.D., Buhrman, R.A., Daughton, J.M., von Molnar, S., Roukes, M.L., Chtchelkanova, A.Y., and Treger, D.M., Spintronics: a spin-based electronics vision for the future. Science, 2001. 294(5546): p. 1488–95.Google Scholar
4. Nikonov, D.E. and Bourianoff, G.I., Spin gain transistor in ferromagnetic semiconductors-the semiconductor Bloch-equations approach. IEEE Transactions on Nanotechnology, 2005. 4(2): p. 206–14.Google Scholar
5. Khitun, A. and Wang, K., Nano scale computational architectures with Spin Wave Bus. Superlattices & Microstructures 2005. 38: p. 184–200.Google Scholar
6. Kostylev, M.P., Serga, A.A., Schneider, T., Leven, B., and Hillebrands, B., Spinwave logical gates. Applied Physics Letters, 2005. 87(15): p. 153501–1.Google Scholar
7. Khitun, A., Ostroumov, R., and Wang, K.L., Spin-wave utilization in a quantum computer. Physical Review A, 2001. 64(6): p. 062304/1–5.Google Scholar
8. Covington, M., Crawford, T.M., and Parker, G.J., Time-resolved measurement of propagating spin waves in ferromagnetic thin films. Physical Review Letters, 2002. 89(23): p. 237202–1.Google Scholar