English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/53570
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
DC FieldValueLanguage
dc.contributor.authorSánchez, David-
dc.contributor.authorMoscoso, M.-
dc.contributor.authorBonilla, Luis L.-
dc.contributor.authorPlatero, Gloria-
dc.contributor.authorAguado, Ramón-
dc.identifierdoi: 10.1103/PhysRevB.60.4489-
dc.identifierissn: 0163-1829-
dc.identifier.citationPhysical Review B 60: 4489-4492 (1999)-
dc.description.abstractSelf-sustained current oscillations in weakly coupled superlattices are studied by means of a self-consistent microscopic model of sequential tunneling, naturally including boundary conditions. Well-to-well hopping and recycling of charge monopole domain walls produce current spikes - high-frequency modulation - superimposed on the oscillation. For highly doped injecting contacts, the self-oscillations are due to the dynamics of monopoles. As the contact doping decreases, a lower-frequency oscillatory mode due to recycling and motion of charge dipoles is predicted. For low contact doping, this mode dominates and monopole oscillations disappear. At intermediate doping, both oscillation modes coexist as stable solutions and hysteresis between them is possible. ©1999 The American Physical Society.-
dc.description.sponsorshipWe thank Rosa Lo´pez and Professor Holger Grahn for helpful discussions. This work has been supported by the DGES ~Spain!, Grant Nos. PB97-0088 and PB96-0875, by the European Union TMR Contract Nos. ERB FMBX-CT97- 0157 and FMRX-CT98-0180, and by the Community of Madrid, Project No. 07N/0026/1998.-
dc.publisherAmerican Physical Society-
dc.titleCurrent self-oscillations, spikes, and crossover between charge monopole and dipole waves in semiconductor superlattices-
dc.description.versionPeer Reviewed-
Appears in Collections:(ICMM) Artículos
Files in This Item:
File Description SizeFormat 
PhysRevB.60.4489.pdf67,07 kBAdobe PDFThumbnail
Show simple item record

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.