TY - JOUR
T1 - Collapse of the fractional quantum Hall state by a unidirectional periodic potential modulation
AU - Endo, A.
AU - Shibata, N.
AU - Iye, Y.
N1 - Funding Information:
This work was supported by Grant-in-Aid for Scientific Research (C) (18540312) and (A) (18204029) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT).
PY - 2010/2
Y1 - 2010/2
N2 - We have investigated the effect of unidirectional periodic potential modulation on the fractional quantum Hall (FQH) states located within the filling factor range 1 < ν < 2. We find that odd-numerator FQH states are strongly suppressed, while the even-numerator ones are less affected or even enhanced, by the introduction of the modulation. In the picture of the composite fermions (CFs), the behaviors are equivalent to the suppression of the spin splitting of the CFs by the modulation. We discuss the origin of the suppression and the possible modulation-induced phase transition from the FQH state to the stripe state.
AB - We have investigated the effect of unidirectional periodic potential modulation on the fractional quantum Hall (FQH) states located within the filling factor range 1 < ν < 2. We find that odd-numerator FQH states are strongly suppressed, while the even-numerator ones are less affected or even enhanced, by the introduction of the modulation. In the picture of the composite fermions (CFs), the behaviors are equivalent to the suppression of the spin splitting of the CFs by the modulation. We discuss the origin of the suppression and the possible modulation-induced phase transition from the FQH state to the stripe state.
KW - Composite fermions
KW - Fractional quantum Hall effect
KW - Lateral superlattice
KW - Stripe phase
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U2 - 10.1016/j.physe.2009.10.024
DO - 10.1016/j.physe.2009.10.024
M3 - Article
AN - SCOPUS:76949095647
SN - 1386-9477
VL - 42
SP - 1042
EP - 1045
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
IS - 4
ER -