We studied the transport properties of the Anderson localization model for a disordered metal using a new numerical method in which the time evolution of the current in response to a constant electric field which is turned on abruptly at t=0 is calculated directly. We report results on the current response of a sample of 1282 sites in the one-orbital-per-site Anderson model near the metal-insulator transition. We find the current response out to times of the order of 1000 times the inverse bandwidth. We discuss scaling and the values of the critical exponents and z (usually thought to be 3).
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical review letters|
|State||Published - 1991|
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