| Conductance anisotropy and linear magnetoresistance in La(2 - x)Sr(x)CuO(4) thin films. | |
| | |
MedLine Citation:
|
PMID: 21540521 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
We have performed a detailed study of conductance anisotropy and magnetoresistance (MR) of La(2 - x)Sr(x)CuO(4) (LSCO) thin films (0.10 < x < 0.25). These two observables are promising for the detection of stripes. Subtle features of the conductance anisotropy are revealed by measuring the transverse resistance R(xy) in zero magnetic field. It is demonstrated that the sign of R(xy) depends on the orientation of the LSCO Hall bar with respect to the terrace structure of the substrate. Unit-cell-high substrate step edges must therefore be a dominant nucleation source for antiphase boundaries during film growth. We show that the measurement of R(xy) is sensitive enough to detect the cubic-tetragonal phase transition of the SrTiO(3)(100) (STO) substrate at 105 K. The MR of LSCO thin films shows for 0.10 < x < 0.25 a non-monotonic temperature dependence, resulting from the onset of a linear term in the MR above 90 K. We show that the linear MR scales with the Hall resistivity as [Formula: see text], with the constant of proportionality independent of temperature. Such scaling suggests that the linear MR originates from current distortions induced by structural or electronic inhomogeneities. The possible role of stripes for both the MR and the conductance anisotropy is discussed throughout the paper. |
| | |
Authors:
|
M van Zalk; A Brinkman; H Hilgenkamp |
Publication Detail:
|
Type: Journal Article Date: 2011-05-04 |
Journal Detail:
|
Title: Journal of physics. Condensed matter : an Institute of Physics journal Volume: 23 ISSN: 1361-648X ISO Abbreviation: J Phys Condens Matter Publication Date: 2011 May |
Date Detail:
|
Created Date: 2011-05-04 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101165248 Medline TA: J Phys Condens Matter Country: England |
Other Details:
|
Languages: eng Pagination: 205602 Citation Subset: IM |
Affiliation:
|
Faculty of Science and Technology and MESA + Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evolution of a metastable phase with a magnetic phase coexistence phenomenon and its unusual sensiti...
Next Document: Effects of phosphate-buffered saline concentration and incubation time on the mechanical and structu...