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Evidence for Skyrmions and Single Spin Flips in the Integer Quantized Hall Effect

A. Schmeller·J. P. Eisenstein·L. N. Pfeiffer·K. W. West
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Abstract

We have employed tilted-field magneto-transport measurements of the energy gap for the odd-integer quantized Hall states at Landau level filling factors $ν= 1$,3 and 5 to determine the spin of thermally excited quasielectron-quasihole pairs. At $ν= 1$ our data show that as many as 7 electron spin flips accompany such excitations, while at $ν=3$ and 5 apparently only a single spin flips. These results lend support to the recent suggestions that "Skyrmionic" quasiparticles are the lowest-lying charged excitations of the fully-polarized $ν= 1$ quantum Hall fluid but are not at the higher odd-integer fillings.

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A. Schmeller, J. P. Eisenstein, L. N. Pfeiffer, K. W. West. 1995-06-28. Evidence for Skyrmions and Single Spin Flips in the Integer Quantized Hall Effect. https://doi.org/10.1103/physrevlett.75.4290

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