21 citations · 92 across the 20 of their papers we have counts for
20 papers
Symmetry-selective nonrelativistic spin splitting in antiferromagnets driven by coherent phonons
Sangeeta Rajpurohit, Mohsen Yarmohammadi, Sheikh Rubaiat Ul Haque +3
Nonrelativistic spin splitting (NRSS) in antiferromagnets (AFMs) enables magnetization-free spin polarization for ultrafast spintronics. Here, we demonstrate that coherent phonons…
Anomalous dynamical energy flows via nonlinear phononics in spin-Peierls chains
Jakob Dolgner, Dirk Manske, James K. Freericks +1
We investigate the nonequilibrium spin-phonon dynamics and energy cascades in a strongly dimerized spin-Peierls chain using a multi-tiered nonlinear phononics architecture. To bypa…
Interplay of nonrelativistic and relativistic spin splittings in altermagnets
Daegeun Jo, Peter M. Oppeneer, Mohsen Yarmohammadi
Despite their compensated magnetic moments, altermagnets (AMs) exhibit nonrelativistic spin splitting (NRSS) that offers routes to spintronic functionality without relying on relat…
Parity-selective spin splitting in coplanar antiferromagnets via bichromatic driving
Di Zhu, Zhongbo Yan, Mohsen Yarmohammadi
Parity is a central characteristic of momentum-dependent spin splitting in antiferromagnets (AFMs). Yet, intrinsic crystal symmetries typically restrict the splitting to either eve…
Chirped Floquet linear drives activate forbidden charge-to-spin conversions in Rashba two-dimensional electron gases
Mohsen Yarmohammadi
In Rashba two-dimensional electron gases (2DEGs), charge-to-spin conversion via the Edelstein effect is conventionally limited to the transverse plane. Accessing longitudinal or ou…
Giant perpendicular Edelstein polarization in 2D compensated magnets via bichromatic Floquet driving
Mohsen Yarmohammadi, Daegeun Jo, Marco Berritta +3
While unconventional -wave magnets can generate nonrelativistic Edelstein polarizations, spin-group symmetries strictly forbid these responses in unconventional magnets with hig…
Floquet-induced anisotropic magnetoresistance and anomalous Hall effect in 2D -wave altermagnets with Rashba spin-orbit coupling
Mohsen Yarmohammadi, Pieter M. Gunnink, Jairo Sinova +1
Altermagnets (AMs) combine momentum-dependent spin splitting with zero net magnetization, making them promising for spintronics. Periodic driving enables dynamic symmetry engineeri…
Efficient two-color Floquet control of the RKKY interaction in altermagnets
Mohsen Yarmohammadi, Pei-Hao Fu, James K. Freericks
Magnetic impurities in real materials can mask the intrinsic spin-dependent properties of hosts. They interact indirectly through the Ruderman-Kittel-Kasuya-Yosida (RKKY) mechanism…
Cavity-induced coherent magnetization and polaritons in altermagnets
Mohsen Yarmohammadi, Libor Šmejkal, James K. Freericks
Altermagnets feature antiparallel spin sublattices with -, -, or -wave spin order, yielding nonrelativistic spin splitting without net magnetization. We show that embeddin…
Spin polarization engineering in -wave altermagnets
Mohsen Yarmohammadi, Marco Berritta, Marin Bukov +3
Altermagnets host unconventional spin-polarized bands despite zero net magnetization, but controlling their spin structure remains challenging. We propose a multi-field approach to…
Slow-phonon control of spin Edelstein effect in Rashba -wave altermagnets
Mohsen Yarmohammadi, Jacob Linder, James K. Freericks
Altermagnets have zero net magnetization yet feature spin-split bands. Here, we investigate how slow lattice vibrations (phonons) influence both the intrinsic and externally induce…
Dynamical phase transition in a strongly hybridized phonon-triplon chain
Mohsen Yarmohammadi
We study a dimerized spin-1/2 chain, such as CuGeO, hosting triplon excitations coupled to optical phonons under weak terahertz laser driving. Both phonons and triplons weakly…
Robust qubit interactions mediated by photonic topological edge states
Boris Gurevich, Weihua Xie, Mohsen Yarmohammadi +1
We investigate the coupling of two spatially separated qubits via topologically protected edge states in a two-dimensional Hofstadter lattice. In this hybrid platform, the qubits a…
Cavity-assisted magnetization switching in a quantum spin-phonon chain
Mohsen Yarmohammadi, Peter M. Oppeneer, James K. Freericks
We propose a Néel magnetization switching mechanism in a hybrid magnon-phonon optical cavity system. A terahertz-pumped single-mode cavity photon couples to a spin-phonon chain, wh…
Anisotropic light-tailored RKKY interaction in two-dimensional -wave altermagnets
Mohsen Yarmohammadi, Ulrich Zülicke, Jamal Berakdar +2
Altermagnets are known in spintronics for their intrinsic spin-splitting and unconventional magnetic responses, particularly to magnetic impurities. However, effectively controllin…
Topological anomalous Floquet photon pump
Manshuo Lin, Saeed Rahmanian Koshkaki, Mohsen Yarmohammadi +1
There is a close theoretical connection between topological Floquet physics and cavity QED, yet this connection has not been realized experimentally due to complicated cavity QED m…
Probing topological phases in a perturbed Kane-Mele model via RKKY interaction: Application to monolayer jacutingaite PtHgSe
Mohsen Yarmohammadi, Saeed Rahmanian Koshkaki, Jamal Berakdar +2
Quantum spin Hall insulators (QSHIs) are promising for spintronics, leveraging strong spin-orbit coupling for efficient spin manipulation via electrical and optical methods, with p…
Terahertz high-harmonic generation in gapped antiferromagnetic chains
Mohsen Yarmohammadi, Michael H. Kolodrubetz
The nonlinear dynamics of magnetization in antiferromagnets, resulting in high-frequency spin waves (high-order harmonics) as signal carriers, enable fast magnetic state switching…
Spin high-harmonic generation through terahertz laser-driven phonons
Negin Moharrami Allafi, Michael H. Kolodrubetz, Marin Bukov +2
In the realm of open quantum systems, steady states and high-harmonic generation (HHG) existing far from equilibrium have become core pillars of ultrafast science. Most solid-state…
Ultrafast dynamics of a fermion chain in a terahertz field-driven optical cavity
Mohsen Yarmohammadi, John Sous, Marin Bukov +1
We study the effect of a terahertz field-driven single cavity mode for ultrafast control of a fermion chain with dissipation-induced nonlinearity and quadratic coupling to an infra…