Field-asymmetric transverse magnetoresistance in a nonmagnetic quantum-size structure

Горбацевич, А. А.; Kopaev, Yu. V.; Кучеренко, И. В.; Omel’yanovskii, O. E.; Tsebro, V. I.; Kapaev, V. V.

doi:10.1134/1.567881

“…This could be the reason for the Laughlin-Halperin-type states there. Indirectly, our guess is supported by theoretical calculations with a simplified model of infinite IQH-like system [34]. According to these calculations, if there is a gradient of electric potential in the Z-direction while external magnetic field has both quantizing (Z) and in-plane (X) components, then electrons' in-plane velocities may be nonzero in the Y-direction.…”

Section: The Idea Of Realizationmentioning

confidence: 89%

Quantum mechanics versus relativity: an experimental test of the structure of spacetime

Emelyanov¹

2012

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We have performed an experimental test under the conditions of which quantum mechanics predicts a spatially-discontinuous single-particle transport. The transport is beyond the relativistic paradigm of movement in Cartesian space and therefore may well be nonlocal. Our test has demonstrated that such transport does exist. This fact opens the door for realistic interpretation of quantum mechanics insofar as the requirement of Lorentz invariance appears inapplicable to any version of quantum theory. Moreover, as quantum mechanics proposes a particle dynamics beyond the relativity, it automatically requires an adequate "quantum" concept of spacetime, for which the relativistic concept is only a limiting case. The quantum concept allows absolute simultaneity and hence revives the notion of absolute time. It also goes beyond the relativistic curvilinear Cartesian order of space to account for quantum phenomena such as the discontinuity and the nonlocality in the spirit of Bohm's concept of the implicate order. PACS numbers: 03.65.-w, 03.67.-a, 04.20.Gz effect with respect to the latter. AS expected, under reversed magnetic field the responses are redistributed as if the whole sample is still exposed to light: light dark J J − ≈ ; dark light J J − ≈

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“…Its form also allows ferrotoroidicity as the toroidic moment is proportional to the antisymmetric part of the magnetoelectric tensor [31]. However in the absence of a uniform magnetic field, it should not lead to a net macroscopic polarization.…”

Section: Dielectric and Polarization Propertiesmentioning

confidence: 99%

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)2O2Cl

Constable

¹

,

Raymond

²

,

Petit

³

et al. 2017

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We report a single-crystal neutron diffraction and inelastic neutron scattering study on the spin 1/2 cuprate Cu3Bi(SeO3)2O2Cl, complemented by dielectric and electric polarization measurements. The study clarifies a number of open issues concerning this complex material, whose frustrated interactions on a kagome-like lattice, combined with Dzyaloshinskii-Moriya interactions, are expected to stabilize an exotic canted antiferromagnetic order. In particular, we determine the nature of the structural transition occurring at 115 K, the magnetic structure below 25 K resolved in the updated space group, and the microscopic ingredients at the origin of this magnetic arrangement. This was achieved by an analysis of the measured gapped spin waves, which signifies the need of an unexpected and significant anisotropic exchange beyond the proposed Dzyaloshinskii-Moriya interactions. Finally, we discuss the mutliferroic properties of this material with respect to the space group symmetries.

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“…The off-diagonal terms indicate that the coupling is maximized when the electric and magnetic fields are perpendicular. Its form also allows ferrotoroidicity as the toroidic moment is proportional to the antisymmetric part of the magnetoelectric tensor [31]. However in the absence of a uniform magnetic field, it should not lead to a net macroscopic polarization.…”

Section: Dielectric and Polarization Propertiesmentioning

confidence: 99%

Magnetic and dielectric order in the kagome-like francisite Cu$_3$Bi(SeO$_3$)$_2$O$_2$Cl

Constable,

Raymond,

Petit

et al. 2017

Preprint

0

View full text Add to dashboard Cite

We report a single-crystal neutron diffraction and inelastic neutron scattering study on the spin 1/2 cuprate Cu3Bi(SeO3)2O2Cl, complemented by dielectric and electric polarization measurements. The study clarifies a number of open issues concerning this complex material, whose frustrated interactions on a kagome-like lattice, combined with Dzyaloshinskii-Moriya interactions, are expected to stabilize an exotic canted antiferromagnetic order. In particular, we determine the nature of the structural transition occurring at 115 K, the magnetic structure below 25 K resolved in the updated space group, and the microscopic ingredients at the origin of this magnetic arrangement. This was achieved by an analysis of the measured gapped spin waves, which signifies the need of an unexpected and significant anisotropic exchange beyond the proposed Dzyaloshinskii-Moriya interactions. Finally, we discuss the mutliferroic properties of this material with respect to the space group symmetries.

show abstract

Field-asymmetric transverse magnetoresistance in a nonmagnetic quantum-size structure

Cited by 9 publications

References 3 publications

Quantum mechanics versus relativity: an experimental test of the structure of spacetime

Quantum mechanics versus relativity: an experimental test of the structure of spacetime

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)2O2Cl

Magnetic and dielectric order in the kagome-like francisite Cu$_3$Bi(SeO$_3$)$_2$O$_2$Cl

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