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  1. 14 Nov 2022 Preprint arXiv

    The effect of cities and distance on COVID-19 spreading in the United States

    Troy McMahon, Shlomo Havlin, Lazaros K Gallos
    Abstract

    The COVID-19 pandemic has evolved over time through multiple spatial and temporal dynamics. The varying extent of interactions among different geographical areas can result to a complex pattern of spreading so that influences between these areas can be hard to discern. Here, we use cross-correlation analysis to detect synchronous evolution and potential inter-influences

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  2. 11 Nov 2022 Preprint arXiv

    Temperature-dependence of the CISS effect from measurements in Chiral molecular intercalation super-lattices

    Subhajit Sarkar, Seif Alwan, Amos Sharoni, Yonatan Dubi
    Abstract

    We detail here some matters arising from the recent paper by Qian et. al., Nature 606, pages 902-908 (2022). We demonstrate, based on data supplied by Qian et. al., and corroborated by theoretical modeling, that one of the central conclusions of the manuscript - namely the behavior of the chirality-induced spin-selectivity (CISS) effect at low temperatures - can actually

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  3. 7 Nov 2022 Journal Article Nano Letters

    Intrinsic Magnetic (EuIn)As Nanowire Shells with a Unique Crystal Structure

    Hadas Shtrikman, Man Suk Song, Magdalena A Załuska-Kotur, Ryszard Buczko, Xi Wang, Beena Kalisky, Perla Kacman, Lothar Houben, Haim Beidenkopf
    Abstract

    In the pursuit of magneto-electronic systems nonstoichiometric magnetic elements commonly introduce disorder and enhance magnetic scattering. We demonstrate the growth of (EuIn)As shells, with a unique crystal structure comprised of a dense net of Eu inversion planes, over InAs and InAs1–xSbx core nanowires. This is imaged with atomic and elemental resolution which

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  4. 6 Nov 2022 Preprint arXiv

    Anomalous Hall effect in disordered Weyl semimetals

    Yonatan Messica, Dmitri B Gutman, Pavel M Ostrovsky
    Abstract

    We study the anomalous Hall effect in a disordered Weyl semimetal. While the intrinsic contribution is expressed solely in terms of Berry curvature, the extrinsic contribution is given by a combination of the skew scattering and side jump terms. For the model of small size impurities, we are able to express the skew scattering contribution in terms of scattering phase

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  5. 2 Nov 2022 Journal Article Micromachines

    High Sensitivity Planar Hall Effect Magnetic Field Gradiometer for Measurements in Millimeter Scale Environments

    Hariharan Nhalil, Moty Schultz, Shai Amrusi, Asaf Grosz, Lior Klein
    Abstract

    We report a specially designed magnetic field gradiometer based on a single elliptical planar Hall effect (PHE) sensor, which allows measuring magnetic field at nine different positions in a 4 mm length scale. The gradiometer detects magnetic field gradients with equivalent gradient magnetic noises of ∼958, ∼192, ∼51, and ∼26 nT/m√ Hz (pT/mm√Hz) at 0.1, 1, 10, and 50

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  6. 31 Oct 2022 Journal Article Superconductor Science and Technology

    Characterization of YBa2Cu3O7-δ coplanar resonator for Microwave Kinetic Inductance Detectors

    Abstract

    We demonstrate an improved YBa2Cu3O7-δ-based Microwave Kinetic Inductance Detector (MKID) with a quality factor Q_i~2.5

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  7. 26 Oct 2022 Journal Article Soft Matter

    Network model of active elastic shells swollen by hydrostatic pressure

    Abstract

    Many organisms have an elastic skeleton that consists of a closed shell of epithelial cells that is filled with fluid, and can actively regulate both elastic forces in the shell and hydrostatic pressure inside it. In this work we introduce a simple network model of such pressure-stabilized active elastic shells in which cross-links are represented by material points

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  8. 24 Oct 2022 Journal Article Physical Review B

    Mixed superconducting state without applied magnetic field

    Alex Khanukov, Itay Mangel, Shai Wissberg, Amit Keren, Beena Kalisky
    Abstract

    A superconducting (SC) mixed state occurs in type-II superconductors where the upper critical field H c 2 is higher than the thermodynamic critical field H c . When an applied field is in between these fields, the free energy depends weakly on the order parameter

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  9. 24 Oct 2022 Preprint arXiv

    Quantum corrections to the magnetoconductivity of surface states in three-dimensional topological insulators

    Gang Shi, Fan Gao, Zhilin Li, Rencong Zhang, Igor V Gornyi, Dmitri B Gutman, Yongqing Li
    Abstract

    The interplay between quantum interference, electron-electron interaction (EEI), and disorder is one of the central themes of condensed matter physics. Such interplay can cause high-order magnetoconductance (MC) corrections in semiconductors with weak spin-orbit coupling (SOC). However, it remains unexplored how the magnetotransport properties are modified by the

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  10. 20 Oct 2022 Preprint arXiv

    Brownian particles in periodic potentials: coarse-graining versus fine structure

    Abstract

    We study the motion of an overdamped particle connected to a thermal heat bath in the presence of an external periodic potential. When the coarse-graining is larger than the periodicity of the potential, the packet of spreading particles, all starting from a common origin, converges to a normal distribution centered at the origin with a mean-squared displacement that

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