Observation of pinning mode of stripe phases of 2D systems in high Landau levels.
We study the radio-frequency diagonal conductivities of the anisotropic stripe phases of higher Landau levels near half-integer fillings. In the hard direction, in which larger dc resistivity occurs, the spectrum exhibits a striking resonance, while in the orthogonal, easy direction, no resonance is discernible. The resonance is interpreted as a pinning mode of the stripe phase.
Sambandamurthy
G
G
National High Magnetic Field Laboratory, Tallahassee, Florida 32306, USA.
Lewis
R M
RM
Zhu
Han
H
Chen
Y P
YP
Engel
L W
LW
Tsui
D C
DC
Pfeiffer
L N
LN
West
K W
KW