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- W1989647735 abstract "Even though much of the dramatic physics of two-dimensional electrons in a high magnetic field is explicable in terms of weakly interacting composite fermions (CFs), the inter-CF interaction is responsible for many interesting, non-trivial phenomena. Here, we discuss four examples. (i) At small filling factors, a softening of the roton mode destroys the fractional Hall effect, giving way to the Wigner crystal. (ii) In higher Landau levels, the fractional Hall effect is destroyed due to a collapse of the energy of the neutral exciton. (iii) At na 5=2; the Fermi sea of CFs is unstable to Cooper pairing of CFs, thereby opening up a gap and producing a fractional Hall effect. (iv) Prior to the transition into the Wigner crystal, the CF liquid exhibits the Bloch instability into a magnetically ordered, spontaneously broken symmetry phase. q 2001 Elsevier Science Ltd. All rights reserved." @default.
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- W1989647735 date "2001-01-01" @default.
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- W1989647735 title "Interacting composite fermions" @default.
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- W1989647735 doi "https://doi.org/10.1016/s0038-1098(00)00440-3" @default.
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