Direct measurement of the thermal conductivity of a two-dimensional electron gas

Autor:	Michael Pepper, Michael Kelly, R. T. Syme
Rok vydání:	1989
Předmět:	Silicon Condensed matter physics Chemistry Liquid helium Phonon chemistry.chemical_element Condensed Matter Physics law.invention Thermal conductivity law Electrical resistivity and conductivity Electron temperature General Materials Science Heat equation Atomic physics Fermi gas
Zdroj:	Journal of Physics: Condensed Matter. 1:3375-3380
ISSN:	1361-648X 0953-8984
Popis:	The temperature decay along a silicon inversion layer, heated at one end by a DC current, has been measured at liquid helium temperatures by using the electron gas as its own thermometer. The decay profile was obtained by solving the heat diffusion equation with energy loss by phonon emission. Using experimental values of the energy loss rate, the measured temperature decay was fitted to the theoretical profile to obtain values for the thermal conductivity of a two-dimensional electron gas. The values found are in agreement with those predicted by the Weidemann-Franz law.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8881a518bee3cba896bd9284e5fb55f2 https://doi.org/10.1088/0953-8984/1/21/009 Zobrazit plný text záznamu