$MGNN magnon

Latest papers

1. Exchange Interactions and Magnon Spectra in bcc Fe(001) Thin Films: A Computational Study cond-mat.mtrl-sci · 14 Oct · 5 hits

   We combined density functional theory with atomistic spin dynamics to understand how surfaces influence magnon dispersion. For this purpose, we investigate thin layers of body-centered cubic iron and compare them…

2. Coherent and dissipative coupling of multiple photon-magnon hybrids in a chiral microwave resonator cond-mat.mes-hall · 14 Oct · 3 hits

   We demonstrate control between level repulsion and level attraction of photon-magnon coupling spectra in a chiral microwave-photon resonator loaded with a 2 mm YIG sphere. By…

3. Magnetic field induced modulation of heat transport in CrPS$_4$ probed by TaIrTe$_4$ transverse Seebeck thermometry cond-mat.mes-hall · 14 Oct · 1 hit

   …with both the spin-flip and spin-flop magnetic transitions which we attribute to variations in the magnon$-$phonon coupling in CrPS$_4$. At 5 K, the transverse Seebeck response is modulated by more than 8$\%$…

4. Beyond Kitaev exchange: $\Gamma'$-driven magnetism in Ag$_3$LiRh$_2$O$_6$ cond-mat.str-el · 14 Oct · 1 hit

   …order within the honeycomb planes. Our spin-wave calculations further predict an unusual topology of the magnon bands arising from the $\Gamma_1'$ term in the spin Hamiltonian of the honeycomb layer. We show that…

5. Dynamics of low energy wave packets in the one-dimensional quantum Heisenberg ferromagnet math-ph · 13 Oct · 2 hits

   …should be well approximated by its free evolution with the appropriate energy of free quasiparticles called magnons. Our main result establishes this idea rigorously for a class of spin wave packets. We focus on…

6. Quantum skyrmion molecule: two quantum skyrmions bound by coherent magnon exchange cond-mat.str-el · 12 Oct · 2 hits

   …The two constituents keep their identity ($7+7$ flipped spins) and are coupled by a coherent exchange of magnons, visible as number fluctuations between the two halves of the domain in excess of those of two…

7. Thermally Enhanced Pseudo-Goldstone Spin Gap in the Isotropic Helimagnet ZnCr$_2$Se$_4$ cond-mat.str-el · 12 Oct · 1 hit

   In magnetically ordered systems, the spin gap in the magnon spectrum is normally expected to decrease on warming and close at the transition out of the long-range…

8. Few-Magnon Universality beyond Contact Interactions in Long-Range Spin Chains cond-mat.quant-gas · 12 Oct · 6 hits

   …work has predicted that the Efimov effect can arise in certain long-range quantum spin chains, where magnons exhibit a general dispersion $\epsilon_k=u|k|^z$ with $z\in(0.52,0.88)$ and interact through a…