Analysis of model-parameter dependences on the second-order nonlinear conductivity in 
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-symmetric collinear antiferromagnetic metals with magnetic toroidal moment on zigzag chains

Yatsushiro, Megumi; Oiwa, Rikuto; Kusunose, Hiroaki; Hayami, Satoru

doi:10.1103/physrevb.105.155157

Cited by 28 publications

(9 citation statements)

References 71 publications

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“…[19][20][21][22][23] This is because the band asymmetry in momentum space, which is the origin of the intrinsic SDE, corresponds to a magnetic toroidal moment in real space. [22][23][24] Specifically, the magnetic toroidal moment is not canceled in [Nb/V/Pt/Fe/Pt/V/Ta], whereas it is canceled in [Nb/V/Au/Fe/Au/V/Ta] (Figures S5a and S6a, Supporting Information). This suggests that the differences in the magnitude of the magnetic toroidal moments result in differences in the observed SDEs.…”

Section: Resultsmentioning

confidence: 99%

Magnetization Control of Zero‐Field Intrinsic Superconducting Diode Effect

et al. 2023

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The superconducting diode effect (SDE), which causes a superconducting state in one direction and a normal‐conducting state in another, has significant potential for developing ultralow power consumption circuits and non‐volatile memory. However, the practical control of the SDE necessities the precise tuning of current, temperature, magnetic field, or magnetism. Therefore, the mechanisms of the SDE must be understood to develop novel materials and devices capable of realizing the SDE under more controlled and robust conditions. This study demonstrates an intrinsic zero‐field SDE with an efficiency of up to 40% in Fe/Pt‐inserted non‐centrosymmetric Nb/V/Ta superconducting artificial superlattices. The polarity and magnitude of the zero‐field SDE are controllable by the direction of magnetization, indicating that the effective exchange field acts on Cooper pairs. Furthermore, the first‐principles calculation indicates that the SDE can be enhanced by an asymmetric configuration of proximity induced magnetic moments in superconducting layers, which induces a magnetic toroidal moment. This study has important implications regarding the development of novel materials and devices that can effectively control the SDE. Moreover, the magnetization control of the SDE is expected to aid in the designing of superconducting quantum devices and establishing a material platform for topological superconductors.

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Section: Resultsmentioning

confidence: 99%

Magnetization Control of Zero‐Field Intrinsic Superconducting Diode Effect

et al. 2023

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“…Thus, the staggered antiferromagnetic ordered state with the z-spin polarization activates the uniform magnetic toroidal dipole along the x direction in Fig. 1(b), which results in T -related physical phenomena, such as magnetoelectric effect [94], nonlinear transport [95,96], nonlinear spin Hall effect [97,98], and nonreciprocal magnon excitations [30,31,[99][100][101][102][103]. Besides, since the magnetic toroidal dipole is the same symmetry as the electric current, the staggered component of the magnetization can be induced when applying an electric current in the paramagnetic state, which is similar to the Edelstein effect in noncentrosymmetric crystals [70,71].…”

Section: Electric Axial Moment Under Locally Asymmetric Crystal Fieldmentioning

confidence: 99%

Electric Ferro-Axial Moment as Nanometric Rotator and Source of Longitudinal Spin Current

2022

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We theoretically investigate electronic orderings with the electric axial moment without breakings of both spatial inversion and time-reversal symmetries in the zigzag-chain system. Especially, we elucidate the role of the local odd-parity hybridization arising from locally noncentrosymmetric lattice structures based on symmetry and microscopic model analyses. We show that the odd-parity crystalline electric field gives rise to an effective cross-product coupling between the electric dipole and electric toroidal dipole, the latter of which corresponds to the electric axial moment. As a result, the staggered component of the electric axial moment is induced by applying an external electric field, while its uniform component is induced via the appearance of staggered electric dipole ordering. We also show that uniform electric quadrupole ordering accompanies uniform electric axial moment. Furthermore, we discuss transverse magnetization as a consequence of the orderings with the uniform electric axial moment. Our results extend the scope of materials exhibiting electric axial ordering to those with locally noncentrosymmetric lattice structures.

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“…The latter is active only when the time-reversal symmetry is broken. performed extensively in recent years [5,31,[39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. From the symmetry point of view, complex magnetic structures, such as spiral magnetic order, had better to be treated not in pieces but with a clump by bundling them.…”

Section: Site-cluster Multipolementioning

confidence: 99%

Generalization of microscopic multipoles and cross-correlated phenomena by their orderings

Kusunose

Hayami

2022

J. Phys.: Condens. Matter

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The generalization of the atomic-scale multipoles is discussed. By introducing the augmented multipoles deﬁned in the hybrid orbitals or in the site/bond-cluster, any of electronic degrees of freedom can be expressed in accordance with the crystallographic point group. These multipoles are useful to describe the cross-correlated phenomena, band-structure deformation, and generation of eﬀective spin-orbit coupling due to antiferromagnetic ordering in a systematic and comprehensive manner. Such a symmetry-adapted multipole basis set could be a promising descriptor for materials design and informatics.

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Analysis of model-parameter dependences on the second-order nonlinear conductivity in PT -symmetric collinear antiferromagnetic metals with magnetic toroidal moment on zigzag chains

Cited by 28 publications

References 71 publications

Magnetization Control of Zero‐Field Intrinsic Superconducting Diode Effect

Magnetization Control of Zero‐Field Intrinsic Superconducting Diode Effect

Electric Ferro-Axial Moment as Nanometric Rotator and Source of Longitudinal Spin Current

Generalization of microscopic multipoles and cross-correlated phenomena by their orderings

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