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- W1513081935 abstract "We propose that the observed low-density ``insulating'' phase of a two-dimensional (2D) semiconductor system, with the carrier density being just below $(n<{n}_{c})$ the so-called critical density where the derivative of resistivity changes sign at low temperatures [i.e., resistivity $ensuremath{rho}(T)$ increases with increasing T for $n>{n}_{c}$ whereas it decreases with increasing T for $n<{n}_{c}],$ is in fact a high-temperature crossover version of the same effective metallic phase seen at higher densities $(n>{n}_{c}).$ This low density $(n<{n}_{c})$ finite-temperature crossover 2D effective insulating phase is characterized by $ensuremath{rho}(T)$ with power-law temperature dependence in contrast to the truly insulating state (occurring at still lower densities) whose resistivity increases exponentially with decreasing temperature." @default.
- W1513081935 created "2016-06-24" @default.
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- W1513081935 creator A5087559449 @default.
- W1513081935 date "2003-11-20" @default.
- W1513081935 modified "2023-09-26" @default.
- W1513081935 title "Low-density finite-temperature apparent insulating phase in two-dimensional semiconductor systems" @default.
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- W1513081935 doi "https://doi.org/10.1103/physrevb.68.195315" @default.
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