Temperature-Dependent Screening of the Edge State around Antidots in the Quantum Hall Regime
Masanori Kato, Akira Endo, Shingo Katsumoto, and Yasuhiro Iye
Phys. Rev. Lett. 102 086802 (2009)
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Note: Selected for the Virtual Journal of Nanoscale Science & Technology
The Aharonov-Bohm (AB) effect in a small array of antidots with large aspect ratio is investigated in the quantum Hall regime.
The evolution with temperature of the AB oscillations in the magnetic field vs gate voltage ($B$-$V_\mathrm {g}$) plane reveals the temperature dependence of the screening.
The self-consistently screened potential of the compressible band surrounding an antidot is observed to gain progressively steeper slope with increasing temperature.