Current Jets, Disorder, and Linear Magnetoresistance in the Silver Chalcogenides

Autor:	Thomas Rosenbaum, Jon Betts, Jingshi Hu
Rok vydání:	2005
Předmět:	Length scale Materials science Negative response Condensed matter physics Magnetoresistance Gyroradius General Physics and Astronomy Conductivity Level crossing Current (fluid) Stoichiometry
Zdroj:	Physical Review Letters. 95
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.95.186603
Popis:	The inhomogeneous distribution of excess or deficient silver atoms lies behind the large and linear transverse magnetoresistance displayed by Ag2+/-delta Se and Ag2+/-delta, introducing spatial conductivity fluctuations with length scales independent of the cyclotron radius. We report a negative, nonsaturating longitudinal magnetoresistance up to at least 60 T, which becomes most negative where the bands cross and the effect of conductivity fluctuations is most acute. Thinning samples down to 10 microm suppresses the negative response, revealing the essential length scale in the problem and paving the way for designer magnetoresistive devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e34c610cead107a59d78e42906108e8 https://doi.org/10.1103/physrevlett.95.186603 Zobrazit plný text záznamu