43 citations · 102 across the 8 of their papers we have counts for
8 papers
Chiral phonons driven by chiral cavities
V. A. S. V. Bittencourt, N. Shabala, R. M. Geilhufe +1
Lattice vibrations carrying angular momentum give rise to fundamental phenomena such as the phonon Hall effect and the Einstein-de Haas effect, offering new opportunities for manip…
Unifying microscopic theories for the phono-magnetic effect
Natalia Shabala, Finja Tietjen, Ylva Liljegren +1
Phonon angular momentum induces an effective magnetic field, a phenomenon called phono-magnetic effect, which has been measured to vary significantly in size. Here, we compare thre…
Non-Markovian heat production in ultrafast phonon dynamics
Fredrik Erikssonm Yulong Qiao, Erik Fransson, R. Matthias Geilhufe +1
High-intensity THz laser pulses enable the light-mediated control of lattice vibrations by resonantly driving selected phonon modes. On ultrafast timescales, memory effects influen…
Fluctuation-induced quadrupole order in magneto-electric materials
Finja Tietjen, R. Matthias Geilhufe
Phases that go beyond dipolar ordering and into multipolar ordering have recently been observed in magneto-electric materials. The resulting phase diagram is commonly explained usi…
Quantum heat current in Terahertz-driven phonon systems
Yulong Qiao, Richard. Matthias Geilhufe
The advent of high-intensity ultrafast laser pulses has opened new opportunities for controlling and designing quantum materials. In particular, terahertz (THz) pulses can resonant…
Electron magnetic moment of transient chiral phonons in KTaO
R. Matthias Geilhufe, Wolfram Hergert
High intensity THz lasers allow for the coherent excitation of individual phonon modes. The ultrafast control of emergent magnetism by means of phonons opens up new tuning mechanis…
Dynamic electron-phonon and spin-phonon interactions due to inertia
R. M. Geilhufe
THz radiation allows for the controlled excitation of vibrational modes in molecules and crystals. We show that the circular motion of ions introduces inertial effects on electrons…
GTPack: A Mathematica group theory package for application in solid-state physics and photonics
R. M. Geilhufe, W. Hergert
We present the Mathematica group theory package GTPack providing about 200 additional modules to the standard Mathematica language. The content ranges from basic group theory and r…