7 papers · 1 filter
A crystal-field route to THz-driven magnetization
T. Zalewski, M. S. Mrudul, Y. Lee +5
Light carries angular momentum, but the microscopic pathways that transform it into magnetization remain elusive. Here we establish that crystal-field excitations, historically vie…
Symmetry-Enforced Chiral Phonons in Altermagnets via Magnon-Phonon Coupling
Philipp Rieger, Markus WeiÃenhofer, Sergiy Mankovsky +1
Chiral phonons are attractive for spintronics applications, however, their zero-field generation in conventional antiferromagnets is forbidden by combined parity and time-reversal…
Chiral Phonons Arising From Chirality-Selective Magnon-Phonon Coupling
Markus WeiÃenhofer, Philipp Rieger, M. S. Mrudul +3
Chiral phonons are desirable for applications in spintronics but their generation and control remains a challenge.Here we demonstrate the emergence of truly chiral phonons from sel…
Generation of Phonons with Angular Momentum During Ultrafast Demagnetization
M. S. Mrudul, Markus WeiÃenhofer, Peter M. Oppeneer
A major question in the field of femtosecond laser-induced demagnetization is whereto the angular momentum lost by the electrons is transferred. Recent ultrafast electron diffracti…
Spin-lattice couplings in ferromagnets: analysis from first-principles
I. P. Miranda, M. Pankratova, M. WeiÃenhofer +8
Magnetoelasticity plays a crucial role in numerous magnetic phenomena, including magnetocalorics, magnon excitation via acoustic waves, and ultrafast demagnetization/Einstein-de Ha…
Element-selective probing of ultrafast ferromagnetic--antiferromagnetic order dynamics in Fe/CoO bilayers
Chowdhury S. Awsaf, Sangeeta Thakur, Markus WeiÃenhofer +6
The ultrafast magnetization dynamics of an epitaxial Fe/CoO bilayer on Ag(001) is examined in an element-resolved way by resonant soft-x-ray reflectivity. The transient magnetic li…