Kinetics of quasiballistic transport in nanoscale semiconductor structures: Is the ballistic limit attainable at room temperature?

Physical Review Letters

Volumn 93, Issue 24, 2004, Pages

  Sano, Nobuyuki ^a  

^a UNIVERSITY OF TSUKUBA   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

BALLISTIC LIMIT; NANOSCALE STRUCTURES; POTENTIAL BARRIER; QUASIBALLISTIC TRANSPORT;

APPROXIMATION THEORY; BOUNDARY LAYERS; COMPUTER SIMULATION; ELECTRIC POTENTIAL; ELECTRON TRANSITIONS; MOSFET DEVICES; NUMERICAL ANALYSIS; THERMAL EFFECTS;

SUPERCONDUCTING MATERIALS;

EID: 37649030191     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.93.246803     Document Type: Article

References (12)

1. F. G. Pikus and K. K. Likharev, Appl. Phys. Lett. 71, 3661 (1997).
2. M. Lundstrom, IEEE Electron Device Lett. 18, 361 (1997); IEEE Electron Devices 49, 133 (2002).
3. M. Lundstrom, IEEE Electron Device Lett. 18, 361 (1997); IEEE Electron Devices 49, 133 (2002).
4. G. Gomila, I. R. Cantalapiedra, T. González, and L. Reggiani, Phys. Rev. B 66, 075302 (2002).
5. M. Naspreda, O. M. Bulashenko, and J. M. Rubi, Phys. Rev. B 68, 155321 (2003).
6. P. Resiboir and M. de Leener, Classical Kinetic Theory of Fluids (John Wiley, New York, 1977).
7. N. Sano, Appl. Phys. Lett. 85, 4208 (2004).
8. H. U. Baranger and J. W. Wilkins, Phys. Rev. B 30, R7349 (1984).
9. A. H. Nayfeh, Perturbation Methods (John Wiley, New York, 1973).
10. N. W. Aschcroft and N. D. Mermin, Solid State Physics (Saunders College, Philadelphia, 1976), p. 324.
11. c(δ̄) is finite at δ̄ = 0. Then, the boundary layer structure would cease to exist.
12. Another issue which should be addressed is on the use of semiclassical kinetic equation. The length scale concerned is small and quantum mechanical treatments should be employed However, if inelastic phonon scattering is effective at room temperature, the phase coherence of electron waves propagating in the channel is disturbed around the potential barrier, which may validate the semiclassical treatment. However, we would like to stress that further studies based on quantum kinetic theory are needed to draw any decisive conclusions.