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Showing 1–9 of 9 results
Advanced filters: Author: Akashdeep Kamra Clear advanced filters

  • Here Pantazopoulos, Feist, García-Vidal, and Kamra explore the combination spin, phonon and photon coupling in a system of magnetic nanoparticles, and find that it leads to an emergent spin-spin interaction. This interaction is long-range and leads to an unconventional form of magnetism that can exhibit strong magnetization at temperatures very close to the critical temperature.

    • Petros Andreas Pantazopoulos
    • Johannes Feist
    • Akashdeep Kamra
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-7

  • Exciton propagation in CrSBr is strongly influenced by magnetic properties, particularly peaking at the Néel temperature. Its transport is not governed by classical diffusion but rather by an interaction with the spin degree of freedom, specifically through a magnon–exciton drag effect.

    • Florian Dirnberger
    • Sophia Terres
    • Alexey Chernikov
    ResearchOpen Access
    Nature Nanotechnology
    Volume: 21, P: 65-70

  • In the layered magnetic semiconductor CrSBr, emergent light–matter hybrids (polaritons) increase the spectral bandwidth of correlations between the magnetic, electronic and optical properties, enabling largely tunable optical responses to applied magnetic fields and magnons.

    • Florian Dirnberger
    • Jiamin Quan
    • Vinod M. Menon
    Research
    Nature
    Volume: 620, P: 533-537

  • Ferrimagnets possess multiple spin sub-lattices resulting in a complex magnon band structure and subtle spin transport across interfaces. Here, the authors show how the spin Seebeck effect, the thermal generation of pure spin current, may be an effective tool to study these magnetic excitations.

    • Stephan Geprägs
    • Andreas Kehlberger
    • Mathias Kläui
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-6

  • Realizing strong magnon-phonon coupling (i.e., magnon-polaron formation) is challenging and typically involves a material or cavity that confines the magnon to a small volume. Here, by combining a YIG film with a ZnO acoustic resonator, Künstle and coauthors achieve magnetic field tuneable magnon-polarons in a virtually infinite magnetic film, and succeed in observing Rabi-like oscillations in the time domain.

    • Kevin Künstle
    • Yannik Kunz
    • Mathias Weiler
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Disturbances in the orientation of magnetization in a magnet can propagate as spin waves or magnons. A design that makes it possible to optically excite nanoscale spin waves offers a route to developing miniaturized spin-based devices.

    • Akashdeep Kamra
    • Lina G. Johnsen
    News & Views
    Nature Physics
    Volume: 19, P: 469-470

  • Using pump-power-dependent exciton absorption spectroscopy, the authors reveal magnon-mediated exciton–exciton interactions and a consequent nonlinear optical response in CrSBr, an antiferromagnetic semiconductor.

    • Biswajit Datta
    • Pratap Chandra Adak
    • Vinod M. Menon
    Research
    Nature Materials
    Volume: 24, P: 1027-1033

  • Magnet-superconductor heterostructures provide a means to engineer unconventional spin-triplet Cooper pairs using ordinary superconductors. Here, a magnet-superconductor bilayer is predicted to host a composite quasiparticle consisting of spinful Cooper pairs coupled to a magnon excitation.

    • Irina V. Bobkova
    • Alexander M. Bobkov
    • Wolfgang Belzig
    ResearchOpen Access
    Communications Materials
    Volume: 3, P: 1-7