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dc.contributor.author
Msall, Madeleine E.
dc.contributor.author
Dietsche, Werner
dc.date.accessioned
2018-12-19T18:28:55Z
dc.date.available
2017-06-11T17:28:27Z
dc.date.available
2018-12-19T18:28:55Z
dc.date.issued
2015-04
dc.identifier.issn
1367-2630
dc.identifier.other
10.1088/1367-2630/17/4/043042
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/100956
dc.identifier.doi
10.3929/ethz-b-000100956
dc.description.abstract
We launch surface acoustic waves (SAW) along both the $\langle 110\rangle $ and the $\langle 1\bar{1}0\rangle $ directions of a Hall bar and measure the anisotropic conductivity in a high purity GaAs two-dimensional electron system in the quantum Hall regime of the stripe and the bubble phases. In the anisotropic stripe phase, SAW propagating along the 'easy' $\langle 110\rangle $ direction sense a compressible behavior (finite resistance) which is seen in standard transport measurement only if current flows along the 'hard' $\langle 1\bar{1}0\rangle $ direction. In the isotropic bubble phase, the SAW data show compressible behavior in both directions, in marked contrast to the incompressible quantum Hall behavior seen in transport measurements. These results challenge models that assume that both the stripe and the bubble phase consist of incompressible domains and raise important questions about the role of domain boundaries in SAW propagation.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Institute of Physics
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.subject
Quantum Hall effect
en_US
dc.subject
Surface acoustic waves
en_US
dc.subject
Collective excitations
en_US
dc.subject
Piezoelectric and acoustoelectric effects
en_US
dc.title
Acoustic measurements of the stripe and the bubble quantum Hall phase
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
New Journal of Physics
ethz.journal.volume
17
en_US
ethz.journal.abbreviated
New j. phys.
ethz.pages.start
043042
en_US
ethz.size
8 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
001997538
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-11T17:28:48Z
ethz.source
ECIT
ethz.identifier.importid
imp5936532e0ad3a34584
ethz.ecitpid
pub:158603
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-12T20:14:17Z
ethz.rosetta.lastUpdated
2018-12-19T18:29:08Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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