Evidence of a first order phase transition between Wigner crystal and Bubble Phases of 2D electrons in higher Landau levels

Details Evidence of a first order phase transition between Wigner crystal and Bubble Phases of 2D electrons in higher Landau levels Evidence of a first order phase transition between Wigner crystal and Bubble Phases of 2D electrons in higher Landau levels

2004-01-23

arxiv.org/abs/cond-mat/0401462v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figs. Revtex4

Scientific paper

10.1103/PhysRevLett.93.176808

For filling factors $\nu$ in the range between 4.16 and 4.28, we simultaneously detect {\it two} resonances in the real diagonal microwave conductivity of a two--dimensional electron system (2DES) at low temperature $T \approx 35$ mK. We attribute the resonances to Wigner crystal and Bubble phases of the 2DES in higher Landau Levels. For $\nu$ below and above this range, only single resonances are observed. The coexistence of both phases is taken as evidence of a first order phase transition. We estimate the transition point as $\nu=4.22$.

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