Articles with "sign reversal" as a keyword



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The sign reversal of anomalous Hall effect derived from the transformation of scattering effect in cluster-assembled Ni0.8Fe0.2 nanostructural films.

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Published in 2021 at "Nanoscale"

DOI: 10.1039/d1nr02313f

Abstract: Both surface and interface scattering induced a sign reversal of the anomalous Hall effect (AHE) in a few heterostructures. The sign reversal existing in a single substance can clarify the role of the surface scattering… read more here.

Keywords: effect; anomalous hall; sign reversal; cluster ... See more keywords
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Sign reversal in magnetic field amplification by relativistic laser-driven microtube implosions

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Published in 2020 at "Applied Physics Letters"

DOI: 10.1063/5.0027466

Abstract: We demonstrate and explain the surprising phenomenon of sign reversal in magnetic field amplification by the laser-driven implosion of a structured target. Relativistically intense laser pulses incident on the outer surface of a microtube target… read more here.

Keywords: seed; field; laser driven; sign reversal ... See more keywords
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Revealing sign-reversal s+− -wave pairing by quasiparticle interference in the heavy-fermion superconductor CeCu2Si2

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Published in 2022 at "Physical Review B"

DOI: 10.1103/physrevb.105.014501

Abstract: Recent observations of two nodeless gaps in superconducting CeCu2Si2 have raised intensive debates on its exact gap structure of either sign reversal (s+−) or sign preserving (s) pairing. Here we investigate the quasiparticle interference (QPI)… read more here.

Keywords: fermion superconductor; quasiparticle interference; superconductor cecu2si2; heavy fermion ... See more keywords
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Direct visualization of sign-reversal s± superconducting gaps in FeTe0.55Se0.45

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Published in 2019 at "Physical Review B"

DOI: 10.1103/physrevb.99.014507

Abstract: In many unconventional superconductors, the pairing of electrons is driven by the repulsive interaction, which leads to the sign reversal of superconducting gaps along the Fermi surfaces (FS) or between them. However, to measure this… read more here.

Keywords: direct visualization; reversal superconducting; superconducting gaps; sign reversal ... See more keywords
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Multiband Mechanism for the Sign Reversal of Coulomb Drag Observed in Double Bilayer Graphene Heterostructures.

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Published in 2018 at "Physical review letters"

DOI: 10.1103/physrevlett.121.036601

Abstract: Coupled 2D sheets of electrons and holes are predicted to support novel quantum phases. Two experiments of Coulomb drag in electron-hole (e-h) double bilayer graphene (DBLG) have reported an unexplained and puzzling sign reversal of… read more here.

Keywords: coulomb drag; bilayer graphene; sign reversal; double bilayer ... See more keywords
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Observation of the Sign Reversal of the Magnetic Correlation in a Driven-Dissipative Fermi Gas in Double Wells.

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Published in 2022 at "Physical review letters"

DOI: 10.1103/physrevlett.130.063001

Abstract: We report the observation of the sign reversal of the magnetic correlation from antiferromagnetic to ferromagnetic in a dissipative Fermi gas in double wells, utilizing the dissipation caused by on-site two-body losses in a controlled… read more here.

Keywords: magnetic correlation; observation sign; reversal magnetic; sign reversal ... See more keywords