947 citations · 3k across the 20 of their papers we have counts for
20 papers
Non-equilibrium self-assembly of spin-wave solitons in FePt nanoparticles
D. Turenne, A. Yaroslavtsev, X. Wang +36
Magnetic nanoparticles such as FePt in the L10-phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the…
Theory of out-of-equilibrium electron and phonon dynamics in metals after ultrafast laser excitation
Ulrike Ritzmann, Peter M. Oppeneer, Pablo Maldonado
The out-of-equilibrium dynamics of electrons and phonons upon laser excitation are often described by the two-temperature model, which assumes that both subsystems are separately i…
High-frequency magnon excitation due to femtosecond spin-transfer torques
Ulrike Ritzmann, Pavel Baláž, Pablo Maldonado +2
Femtosecond laser pulses can induce ultrafast demagnetization as well as generate bursts of hot electron spin currents. In trilayer spin valves consisting of two metallic ferromagn…
Domain wall dynamics due to femtosecond laser-induced superdiffusive spin transport
Pavel Baláž, Karel Carva, Ulrike Ritzmann +2
Manipulation of magnetic domain walls via a helicity-independent laser pulse has recently been experimentally demonstrated and various physical mechanisms leading to domain wall dy…
Coherent modulation of the electron temperature and electron-phonon couplings in a 2D material
Yingchao Zhang, Xun Shi, Wenjing You +9
Ultrashort light pulses can selectively excite charges, spins and phonons in materials, providing a powerful approach for manipulating their properties. Here we use femtosecond las…
Tracking the Ultrafast Non-Equilibrium Energy Flow between Electronic and Lattice Degrees of Freedom in Crystalline Nickel
P. Maldonado, T. Chase, A. H. Reid +9
Femtosecond laser excitation of solid-state systems creates non-equilibrium hot electrons that cool down by transferring their energy to other degrees of freedom and ultimately to…
Microscopic Theory of Ultrafast Out-of-Equilibrium Dynamics in Magnetic Insulators. Unraveling the Magnon-Phonon Coupling
Pablo Maldonado, Yaroslav O. Kvashnin
The interaction between lattice and spins is at the heart of an extremely intriguing ultrafast dynamics in magnetic materials. In this work we formulate a general non-equilibrium t…
Observation of Gapless Dirac Surface States in ZrGeTe
M. Mofazzel Hosen, Klauss Dimitri, Alex Aperis +10
The experimental discovery of the topological Dirac semimetal establishes a platform to search for various exotic quantum phases in real materials. ZrSiS-type materials have recent…
Distinct multiple fermionic states in a single topological metal
M. Mofazzel Hosen, Klauss Dimitri, Ashis K. Nandy +11
Among the quantum materials that gained interest recently are the topological Dirac/Weyl semimetals, where conduction and valence bands touch at points in reciprocal (k)-space, and…
Dissecting spin-phonon equilibration in ferrimagnetic insulators by ultrafast lattice excitation
Sebastian F. Maehrlein, Ilie Radu, Pablo Maldonado +8
To gain control over magnetic order on ultrafast time scales, a fundamental understanding of the way electron spins interact with the surrounding crystal lattice is required. Howev…
Transport theory for femtosecond laser-induced spin-transfer torques
Pavel Baláž, Martin Žonda, Karel Carva +2
Ultrafast demagnetization of magnetic layers pumped by a femtosecond laser pulse is accompanied by a nonthermal spin-polarized current of hot electrons. These spin currents are stu…
Theory of Out-of-Equilibrium Ultrafast Relaxation Dynamics in Metals
Pablo Maldonado, Karel Carva, Martina Flammer +1
Ultrafast laser excitation of a metal causes correlated, highly nonequilibrium dynamics of electronic and ionic degrees of freedom, which are however only poorly captured by the wi…
Observation of topological nodal-line fermionic phase in GdSbTe
M. Mofazzel Hosen, Gyanendra Dhakal, Klauss Dimitri +7
Topological Dirac semimetals with accidental band touching between conduction and valence bands protected by time reversal and inversion symmetry are at the frontier of modern cond…
Tunability of the topological nodal-line semimetal phase in ZrSiX-type materials
M. Mofazzel Hosen, Klauss Dimitri, Ilya Belopolski +11
The discovery of a topological nodal-line (TNL) semimetal phase in ZrSiS has invigorated the study of other members of this family. Here, we present a comparative electronic struct…
Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS
Madhab Neupane, Ilya Belopolski, M. Mofazzel Hosen +12
Unveiling new topological phases of matter is one of the current objectives in condensed matter physics. Recent experimental discoveries of Dirac and Weyl semimetals prompt to sear…
Efficient metallic spintronic emitters of ultrabroadband terahertz radiation
T. Seifert, S. Jaiswal, U. Martens +18
Terahertz electromagnetic radiation is extremely useful for numerous applications such as imaging and spectroscopy. Therefore, it is highly desirable to have an efficient table-top…
Generation of high-frequency strain waves during femtosecond demagnetization of Fe/MgO films
T. Henighan, M. Trigo, S. Bonetti +22
We use femtosecond time-resolved hard x-ray scattering to detect coherent acoustic phonons excited during ultrafast laser demagnetization of bcc Fe films. We determine the lattice…
Magnetic, electrical and thermodynamic properties of NpIr: ambient and high pressure measurements, and electronic structure calculations
H. C. Walker, K. A. McEwen, J. -C. Griveau +5
We present bulk property measurements of NpIr, a newly synthesized member of the Np-Ir binary phase diagram, which is isostructural to the non-centrosymmetric pressure-induced ferr…
Magnetic-Field-Induced Odd-Frequency Superconductivity in MgB
Alex Aperis, Pablo Maldonado, Peter M. Oppeneer
In all known superconductors the pairing of fermions is not sensitive to the sign of their time-argument difference, leading to a Cooper pair wavefunction that is even in time/freq…
Engineering ultrafast spin currents and terahertz transients by magnetic heterostructures
T. Kampfrath, M. Battiato, P. Maldonado +9
In spin-based electronics, information is encoded by the spin state of electron bunches. Processing this information requires the controlled transport of spin angular momentum thro…