dc.contributor.author
Friess, B.
dc.contributor.author
Peng, Y.
dc.contributor.author
Rosenow, B.
dc.contributor.author
Oppen, Felix von
dc.contributor.author
Umansky, V.
dc.contributor.author
von Klitzing, K.
dc.contributor.author
Smet, J. H.
dc.date.accessioned
2019-10-09T13:37:17Z
dc.date.available
2019-10-09T13:37:17Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/25717
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-25481
dc.description.abstract
The physics of itinerant electrons in condensed matter is by and large governed by repulsive Coulomb forces. However, attractive interactions may emerge and prevail in determining the ground state despite the pervasive Coulomb repulsion. A notable example is electron pairing and superconductivity. The interplay of attractive and repulsive interactions may also instigate spontaneous symmetry lowering and clustering of charges in geometric patterns even without net attraction. Both types of attractive interaction triggered physics—pairing and charge ordering—are at play in two-dimensional electron systems exposed to a quantizing magnetic field. The charge ordering has been concluded indirectly from transport behaviour. Here we report the observation of negative permittivity present solely when bubble and stripe phases form. In conjunction with a theoretical model, the negative permittivity provides evidence for the underlying attractive exchange-correlation energy which sufficiently countervails Coulomb repulsion at small distances to enable and mediate charge clustering.
en
dc.format.extent
7 Seiten
dc.rights.uri
http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen
dc.subject
electronic properties
en
dc.subject
electronic materials
en
dc.subject
phase transitions
en
dc.subject
critical phenomena
en
dc.subject
Quantum Hall
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::539 Moderne Physik
dc.title
Negative permittivity in bubble and stripe phases
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1038/nphys4213
dcterms.bibliographicCitation.journaltitle
Nature Physics
dcterms.bibliographicCitation.pagestart
1124
dcterms.bibliographicCitation.pageend
1129
dcterms.bibliographicCitation.volume
13
dcterms.bibliographicCitation.url
https://doi.org/10.1038/nphys4213
refubium.affiliation
Physik
refubium.affiliation.other
Institut für Theoretische Physik

refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
1745-2473
dcterms.isPartOf.eissn
1745-2481