Bolometric terahertz detection in pinched-off quantum point contacts

Song, J. W.; Aizin, G. R.; Mikalopas, J.; Kawano, Y.; Ishibashi, K.; Aoki, N.; Reno, J. L.; Ochiai, Y.; Bird, J. P.
August 2010
Applied Physics Letters;8/23/2010, Vol. 97 Issue 8, p083109
Academic Journal
Terahertz (>1 THz) irradiation of pinched-off quantum point contacts (QPCs) generates a pronounced photo-current due to radiation-induced heating. This response is reproduced by a model of temperature-dependent transmission through a saddle potential, confirming its bolometric nature.


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