Modulation induced stripe phase at fractional fillings

Akira Endo, Naokazu Shibata, Yasuhiro Lye

Research output: Contribution to journalConference articlepeer-review

Abstract

We have experimentally examined the state of a two-dimensional electron gas subjected to unidirectional periodic potential modulation in the vicinity of the filling ν=5/3 (equivalent to ν=1/3 by the particle-hole symmetry). In addition to a peak in the longitudinal resistivity ρxx, we find small amplitude oscillations roughly periodic in the magnetic field B in the Hall resistivity ρyx. The oscillations appear in a narrow range of the electron density ne, and the period ΔB of the oscillations increases with the slight increase in ne. The oscillations are interpreted as resulting from the commensurability between the high harmonics of the modulation potential and the stripe state, which is predicted by the density matrix renormalization group calculations to be the ground state in our system.

Original languageEnglish
Article number012023
JournalJournal of Physics: Conference Series
Volume334
Issue number1
DOIs
Publication statusPublished - 2011
Event19th International Conference on the Application of High Magnetic Fields in Semiconductor Physics and Nanotechnology, HMF-19 - Fukuoka, Japan
Duration: 2010 Aug 12010 Aug 6

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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