H. Thomas, K.A. Müller
Physical Review Letters
We show that near the Gunn instability in semiconductors the plasma frequency is purely imaginary and goes to zero at the critical field. © 1968 The American Physical Society.
H. Thomas, K.A. Müller
Physical Review Letters
M. Büttiker, H. Thomas
Journal of Statistical Physics
K.W.H. Stevens, E. Pytte
Solid State Communications
E. Pytte, J.F. Fernandez
Physical Review B