Transmission Nonreciprocity in a Mutually Coupled Circulating Structure

He, Bing; Yang, Liu; Jiang, Xiaoshun; Xiao, Min

doi:10.1103/physrevlett.120.203904

Cited by 60 publications

(25 citation statements)

References 51 publications

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“…In addition to the second harmonic transverse resistance 2 yx R , we have measured its longitudinal counterpart 2 xx R(Fig. 2a)for the same samplethe recently observed BMER effect[21,48], which linearly scales with both the electric and magnetic fields as well. A comparison of the angular dependences of the two nonlinear resistances shown inFig.…”

mentioning

confidence: 96%

Nonlinear Planar Hall Effect

et al. 2019

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An intriguing property of three-dimensional (3D) topological insulator (TI) is the existence of surface states with spin-momentum locking, which offers a new frontier of exploration in spintronics. Here, we report the observation of a new type of Hall effect in a 3D TI Bi2Se3 film. The Hall resistance scales linearly with both the applied electric and magnetic fields and exhibits a π/2 angle offset with respect to its longitudinal counterpart, in contrast to the usual angle offset of π/4 between the linear planar Hall effect and the anisotropic magnetoresistance. This novel nonlinear planar Hall effect originates from the conversion of a nonlinear transverse spin current to a charge current due to the concerted actions of spin-momentum locking and time reversal symmetry breaking, which also exists in a wide class of non-centrosymmetric materials with a large span of magnitude. It provides a new way to characterize and utilize the nonlinear spin-to-charge conversion in a variety of topological quantum materials.

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confidence: 96%

Nonlinear Planar Hall Effect

et al. 2019

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“…Recently novel avenues to achieve nonreciprocity of electromagnetic fields without magnets but using new scattering effects and a new class of materials and metamaterials have been implemented. [ 16–21 ] The examples include dynamic spatiotemporal modulation of parameters, [ 22–25 ] synthetic magnetic field, [ 25–27 ] angular momentum biasing in photonic or acoustic systems, [ 21,28,29 ] nonlinearity, [ 30–33 ] interband photonic transitions, [ 34,35 ] optomechanics, [ 36–40 ] optoacoustics, [ 41,42 ] parity‐time (PT)‐symmetry breaking, [ 43–45 ] unidirectional gain and loss, [ 46–53 ] moving/rotating cavities [ 54–56 ] and emitters, [ 57 ] Doppler‐shift, [ 58 ] chiral light‐matter coupling and valley polarization, [ 59–63 ] and quantum nonlinearity. [ 64–67 ] Furthermore, quantum systems based on superconducting Josephson junctions attract much attention as they hold a great promise for quantum computing.…”

Section: Introductionmentioning

confidence: 99%

Up‐And‐Coming Advances in Optical and Microwave Nonreciprocity: From Classical to Quantum Realm

Kutsaev

Krasnok

Romanenko

et al. 2021

Advanced Photonics Research

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Reciprocity is a fundamental physical principle that roots in the time‐reversal symmetry of physical laws. It allows making predictions on any arbitrary complex system's response and operation and hence simplifies the analysis. However, there are many practical situations in which it is advantageous to break reciprocity, e.g., isolators preventing wave scattering back to lasers and generators, full‐duplex systems for multiplexing transmission and receiving in the same channel, nonreciprocal cavity excitation, and protection of fragile states of superconductor quantum computers from thermal noise. The most widespread approach to time‐reversal symmetry breaking and nonreciprocity based on magnetic field biasing suffers from bulkiness, cost ineffectiveness, and loss, motivating researchers and engineers to search for more practical approaches. Herein, the up‐and‐coming advances in optical nonreciprocity, including new materials (Weyl semimetals, topological insulators, metasurfaces), active structures, time‐modulation, parity‐time (PT)‐symmetry breaking, nonlinearity combined with a structural asymmetry, quantum nonlinearity, unidirectional gain and loss, chiral quantum states and valley polarization are overviewed. A general description of nonreciprocal systems is provided and the pros and cons of the mentioned approaches to nonreciprocity are discussed.

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“…Nonreciprocity has been introduced to various fields to give asymmetrical, nonlinear, and/or time non-revisal physical systems 1 – 9 . Optical nonreciprocity has been recently introduced to photonics, optical diodes, and insulators to give nonreciprocal transmissions of light fields 1 – 5 .…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, materials or structures that would achieve asymmetric couplings of certain fields would break the time-reversal symmetry and induce nonreciprocity without breaking the reciprocity laws 11 . This has been realized in optical systems where structures that achieved asymmetric couplings of the optical fields induced optical nonreciprocity without breaking the Lorentz reciprocity law 9 . This indicates that the violation of the reciprocity law of a physical system does not necessarily imply that the physical system is really nonreciprocal.…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal elasticity and the realization of static and dynamic nonreciprocity

Shaat¹

2020

Sci Rep

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The realization of the mechanical nonreciprocity requires breaking either the time-reversal symmetry or the material deformation symmetry. The time-reversal asymmetry was the commonly adopted approach to realize dynamic nonreciprocity. However, a static nonreciprocity requires—with no any other option—breaking the material deformation symmetry. By virtue of the Maxwell–Betti reciprocal theorem, the achievement of the static nonreciprocity seems to be conditional by the use of a nonlinear material. Here, we further investigate this and demonstrate a novel “nonreciprocal elasticity” concept. We investigated the conditions of the attainment of effective static nonreciprocity. We revealed that the realization of static nonreciprocity requires breaking the material deformation symmetry under the same kinematical and kinetical conditions, which can be achieved only and only if the material exhibits a nonreciprocal elasticity. By means of experimental and topological mechanics, we demonstrate that the realization of static nonreciprocity requires nonreciprocal elasticity no matter what the material is linear or nonlinear. We experimentally demonstrated linear and nonlinear metamaterials with nonreciprocal elasticities. The developed metamaterials were used to demonstrate that nonreciprocal elasticity is essential to realize static nonreciprocal-topological systems. The nonreciprocal elasticity developed here will open new venues of the design of metamaterials that can effectively break the material deformation symmetry and achieve, both, static and dynamic nonreciprocity.

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Transmission Nonreciprocity in a Mutually Coupled Circulating Structure

Cited by 60 publications

References 51 publications

Nonlinear Planar Hall Effect

Nonlinear Planar Hall Effect

Up‐And‐Coming Advances in Optical and Microwave Nonreciprocity: From Classical to Quantum Realm

Nonreciprocal elasticity and the realization of static and dynamic nonreciprocity

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