Laser-Induced Transient Magnons in Sr3Ir2O7 Throughout the Brillouin Zone

Abstract

Although ultrafast manipulation of magnetism holds great promise for new physical phenomena and applications, targeting specific states is held back by our limited understanding of how magnetic correlations evolve on ultrafast timescales. Using ultrafast resonant inelastic x-ray scattering we demonstrate that femtosecond laser pulses can excite transient magnons at large wavevectors in gapped antiferromagnets, and that they persist for several picoseconds which is opposite to what is observed in nearly gapless magnets. Our work suggests that materials with isotropic magnetic interactions are preferred to achieve rapid manipulation of magnetism.

6 pages, 4 figures, not including supplemental material; accepted in PNAS

References in corpus (9)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Bandwidth-Controlled Insulator-Metal Transition and Correlated Metallic State in 5$d$ Transition Metal Oxides Sr${}_{n+1}$Ir${}_n$O${}_{3n+1}$ ($n$=1, 2, and $\infty$)
• Giant Magnon Gap in Bilayer Iridate Sr3Ir2O7: Enhanced Pseudo-dipolar Interactions Near the Mott Transition
• Manipulating magnetism by ultrafast control of the exchange interaction
• Evidence of quantum dimer excitations in Sr${}_3$Ir${}_2$O${}_7$
• Non-equilibrium magnetic interactions in strongly correlated systems
• Emergent ultrafast phenomena in correlated oxides and heterostructures
• Dispersive Magnetic and Electronic Excitations in Iridate Perovskites Probed with Oxygen $K$-Edge Resonant Inelastic X-ray Scattering
• Doping Evolution of Magnetic Order and Magnetic Excitations in (Sr${}_{1-x}$La${}_x$)${}_3$Ir${}_2$O${}_7$

Cited by in corpus (23)

• Nonthermal pathways to ultrafast control in quantum materials
• Exploring Quantum Materials with Resonant Inelastic X-Ray Scattering
• Ultrafast Modulations And Detection of a Ferro-rotational Charge Density Wave Using Time-resolved Electric Quadrupole Second Harmonic Generation
• Supermagnonic propagation in two-dimensional antiferromagnets
• Witnessing Light-Driven Entanglement using Time-Resolved Resonant Inelastic X-Ray Scattering
• Probing electron-phonon interactions away from the Fermi level with resonant inelastic x-ray scattering
• Decoupling of static and dynamic criticality in a driven Mott insulator
• Sr${}_2$IrO${}_4$/Sr${}_3$Ir${}_2$O${}_7$ superlattice for a model 2D quantum Heisenberg antiferromagnet
• Time-domain study of coupled collective excitations in quantum materials
• Non-thermal breaking of magnetic order via photo-generated spin defects
• Reconciling monolayer and bilayer $J_{\mathrm{eff}}=1/2$ square lattices in hybrid oxide superlattice
• A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL
• 4D visualization of the photoexcited coherent magnon by an X-ray free electron laser
• Exciton-assisted low-energy magnetic excitations in a photoexcited Mott insulator on a square lattice
• Using magnetic dynamics to measure the spin gap in a candidate Kitaev material
• Melting of magnetic order in ${\mathrm{NaOsO}}_3$ by fs laser pulses
• Nonequilibrium phase transition in a driven-dissipative quantum antiferromagnet
• Signatures of Floquet Engineering in the proximal Kitaev Quantum Spin Liquid H${}_3$LiIr${}_2$O${}_6$ by tr-RIXS
• X-Ray Scattering from Light-Driven Spin Fluctuations in a Doped Mott Insulator
• Spatio-temporal migration of antiferromagnetic domain walls in Sr2IrO4
• Dynamical correlations and nonequilibrium sum rules in photodoped Hubbard ladders
• Spin waves excited by hard x-ray transient gratings
• Collective Magnetic Excitations in a Photo-excited Electron-doped Cuprate Superconductor