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Applied Physics Letters / Volume 87 / Issue 19 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 87, 193112 (2005); http://dx.doi.org/10.1063/1.2130526 (3 pages)

Space-charge-limited bipolar flow in a nano-gap

W. S. Koh1, L. K. Ang1, S. P. Lau1, and T. J. T. Kwan2

1School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
2Applied Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

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(Received 22 June 2005; accepted 5 October 2005; published online 4 November 2005)

This paper presents a quantum model of space-charge limited (SCL) bipolar flow in a nano-sized planar gap, including the effects of electron tunneling and exchange-correlation. It is found that the classical scaling of the SCL bipolar flow is no longer valid when the gap spacing D is comparable or smaller than the electron’s de Broglie wavelength at gap voltage Vg. The classical value of the SCL bipolar electron flow is greatly enhanced due to the electron tunneling through the space-charge electric potential created by both the electrons and ions. The space-charge effect of ions is less significant (compared to electron tunneling) in the deep quantum regime that the quantum SCL bipolar flow is nearly identical to the unipolar electron flow (or quantum Child-Langmuir law).

© 2005 American Institute of Physics

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KEYWORDS and PACS

Keywords

nanostructured materials, space charge, tunnelling, wave mechanics, current density, diodes

PACS

  • 77.22.Jp

    Dielectric breakdown and space-charge effects

  • 73.63.-b

    Electronic transport in nanoscale materials and structures

  • 73.40.Gk

    Tunneling

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2130526

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

    D. Shiffler, M. Ruebush, M. LaCour, K. Golby, R. Umstattd, M. C. Clark, J. Luginsland, D. Zagar, and M. Sena, Appl. Phys. Lett. 79, 2871 (2001)APPLAB000079000018002871000001.

    Y. M. Saveliev, W. Sibbett, and D. M. Parkes, Appl. Phys. Lett. 81, 2343 (2002)APPLAB000081000013002343000001.

    D. Shiffler, K. L. Cartwright, K. Lawrence, M. Ruebush, M. LaCour, K. Golby, and D. Zagar, Appl. Phys. Lett. 83, 428 (2003)APPLAB000083000003000428000001.

    Y. M. Saveliev, W. Sibbett, and D. M. Parkes, J. Appl. Phys. 94, 5776 (2003)JAPIAU000094000009005776000001.

    D. Shiffler, J. Heggemeier, M. LaCour, K. Golby, and M. Ruebush, Phys. Plasmas 11, 1680 (2004)PHPAEN000011000004001680000001.

    I. Langmuir, Phys. Rev. 33, 954 (1929).

    I. Langmuir, Phys. Rev. 2, 450 (1913).

    A. A. G. Driskill-Smith, D. G. Hasko, and H. Ahmed, Appl. Phys. Lett. 75, 2845 (1999)APPLAB000075000018002845000001.

    W. L. Howes, J. Appl. Phys. 37, 438 (1965)JAPIAU000037000001000438000001.

    J. W. Poukey, Appl. Phys. Lett. 26, 145 (1975)APPLAB000026000004000145000001.

    C. Litwin and R. Rosner, Phys. Rev. E 58, 1163 (2004).

    Y. Y. Lau, D. Chernin, D. G. Colombant, and P.-T. Ho, Phys. Rev. Lett. 66, 1446 (1991).

    L. K. Ang, T. J. T. Kwan, and Y. Y. Lau, Phys. Rev. Lett. 91, 208303 (2003).


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