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- W2000532583 endingPage "10788" @default.
- W2000532583 startingPage "10779" @default.
- W2000532583 abstract "Taking into account the transverse gauge field fluctuations, which interact with composite fermions, we examine the finite temperature compressibility of the fermions as a function of an effective magnetic field $Delta B = B - 2 n_e hc/e$ ($n_e$ is the density of electrons) near the half-filled state. It is shown that, after including the lowest order gauge field correction, the compressibility goes as ${partial n over partial mu} propto e^{- Delta omega_c / 2 T} left ( 1 + {A (eta) over eta - 1} {(Delta omega_c)^{2 over 1 + eta} over T} right )$ for $T ll Delta omega_c$, where $Delta omega_c = {e Delta B over mc}$. Here we assume that the interaction between the fermions is given by $v ({bf q}) = V_0 / q^{2 - eta} (1 le eta le 2)$, where $A (eta)$ is a $eta$ dependent constant. This result can be interpreted as a divergent correction to the activation energy gap and is consistent with the divergent renormalization of the effective mass of the composite fermions." @default.
- W2000532583 created "2016-06-24" @default.
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- W2000532583 date "1995-04-15" @default.
- W2000532583 modified "2023-09-23" @default.
- W2000532583 title "Influence of gauge-field fluctuations on composite fermions near the half-filled state" @default.
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- W2000532583 doi "https://doi.org/10.1103/physrevb.51.10779" @default.
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