Memristive model of hysteretic field emission from carbon nanotube   arrays
  Some instances of electron field emitters are characterized by frequency-dependent hysteresis in their current-voltage characteristics. We argue that such emitters can be classified as memristive systems and introduce a general framework to describe their response. As a specific example of our approach, we consider field emission from a carbon nanotube array. Our experimental results demonstrate a low-field hysteresis, which is likely caused by an electrostatic alignment of some of the nanotubes in the applied field. We formulate a memristive model of such phenomenon whose results are in agreement with the experimental results. 
D. V. Gorodetskiy, A. V. Guselnikov, S. N. Shevchenko M. A. Kanygin,   A. V. Okotrub and Y. V. Pershin
cond-mat.mes-hall