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Interplanar coupling-dependent magnetoresistivity in high-purity layered metals
- Source :
- Nature Communications, 7, pp. 8-16, Nature Communications, 7, 8-16, Biological Sciences Publications, Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016), Nature Communications
- Publication Year :
- 2016
-
Abstract
- The magnetic field-induced changes in the conductivity of metals are the subject of intense interest, both for revealing new phenomena and as a valuable tool for determining their Fermi surface. Here, we report a hitherto unobserved magnetoresistive effect in ultra-clean layered metals, namely a negative longitudinal magnetoresistance that is capable of overcoming their very pronounced orbital one. This effect is correlated with the inter-layer coupling disappearing for fields applied along the so-called Yamaji angles where the inter-layer coupling vanishes. Therefore, it is intrinsically associated with the Fermi points in the field-induced quasi-one-dimensional electronic dispersion, implying that it results from the axial anomaly among these Fermi points. In its original formulation, the anomaly is predicted to violate separate number conservation laws for left- and right-handed chiral- (e.g. Weyl) fermions. Its observation in PdCoO$_2$, PtCoO$_2$ and Sr$_2$RuO$_4$ suggests that the anomaly affects the transport of clean conductors, particularly near the quantum limit.<br />Comment: Nature Communications (in press)
- Subjects :
- Magnetoresistance
High Energy Physics::Lattice
Science
Condensed matter
General Physics and Astronomy
FOS: Physical sciences
02 engineering and technology
Correlated Electron Systems / High Field Magnet Laboratory (HFML)
01 natural sciences
Article
General Biochemistry, Genetics and Molecular Biology
Condensed Matter - Strongly Correlated Electrons
Condensed Matter::Materials Science
0103 physical sciences
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
010306 general physics
Biology
GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries)
Physics
Conservation law
Multidisciplinary
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed matter physics
Strongly Correlated Electrons (cond-mat.str-el)
Quantum limit
Life Sciences
Fermi surface
General Chemistry
Fermion
021001 nanoscience & nanotechnology
Semimetal
Condensed Matter - Other Condensed Matter
Physical sciences
Coupling (physics)
Condensed Matter::Strongly Correlated Electrons
Anomaly (physics)
0210 nano-technology
Other Condensed Matter (cond-mat.other)
Subjects
Details
- ISSN :
- 20411723
- Database :
- OpenAIRE
- Journal :
- Nature Communications, 7, pp. 8-16, Nature Communications, 7, 8-16, Biological Sciences Publications, Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016), Nature Communications
- Accession number :
- edsair.doi.dedup.....2726605fa2224ffe18070b45b623629e