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Quasi-isotropic orbital magnetoresistance in lightly doped SrTiO$_{3}$
- Source :
- Physical Review Materials, Physical Review Materials, American Physical Society, 2021, 5 (6), 065002 (6 p.). ⟨10.1103/PhysRevMaterials.5.065002⟩, Physical Review Materials, 2021, 5 (6), 065002 (6 p.). ⟨10.1103/PhysRevMaterials.5.065002⟩
- Publication Year :
- 2021
- Publisher :
- arXiv, 2021.
-
Abstract
- A magnetic field parallel to an electrical current does not produce a Lorentz force on the charge carriers. Therefore, orbital longitudinal magnetoresistance is unexpected. Here we report on the observation of a large and non saturating magnetoresistance in lightly doped SrTiO$_{3-x}$ independent of the relative orientation of current and magnetic field. We show that this quasi-isotropic magnetoresistance can be explained if the carrier mobility along all orientations smoothly decreases with magnetic field. This anomalous regime is restricted to low concentrations when the dipolar correlation length is longer than the distance between carriers. We identify cyclotron motion of electrons in a potential landscape tailored by polar domains as the cradle of quasi-isotropic orbital magnetoresistance. The result emerges as a challenge to theory and may be a generic feature of lightly-doped quantum paralectric materials.<br />Comment: S.M on request
- Subjects :
- Electron mobility
Materials science
Physics and Astronomy (miscellaneous)
Magnetoresistance
FOS: Physical sciences
02 engineering and technology
Electron
01 natural sciences
Superconductivity (cond-mat.supr-con)
Condensed Matter - Strongly Correlated Electrons
symbols.namesake
Condensed Matter::Materials Science
0103 physical sciences
General Materials Science
010306 general physics
Condensed Matter - Materials Science
Condensed matter physics
Strongly Correlated Electrons (cond-mat.str-el)
Condensed Matter - Superconductivity
Materials Science (cond-mat.mtrl-sci)
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Magnetic field
Orientation (vector space)
Dipole
symbols
Charge carrier
Condensed Matter::Strongly Correlated Electrons
0210 nano-technology
Lorentz force
Subjects
Details
- ISSN :
- 24759953
- Database :
- OpenAIRE
- Journal :
- Physical Review Materials, Physical Review Materials, American Physical Society, 2021, 5 (6), 065002 (6 p.). ⟨10.1103/PhysRevMaterials.5.065002⟩, Physical Review Materials, 2021, 5 (6), 065002 (6 p.). ⟨10.1103/PhysRevMaterials.5.065002⟩
- Accession number :
- edsair.doi.dedup.....ab5e20b42ad89e36e237ed52d31d1e91
- Full Text :
- https://doi.org/10.48550/arxiv.2101.09062