Terahertz control of many-body dynamics in quantum materials

CJ Yang, J Li, M Fiebig, S Pal - Nature Reviews Materials, 2023 - nature.com
Quantum-mechanical phenomena underpin the behaviour of quantum materials at the
microscopic level. The description of several essential properties of these materials …

Magnetic field expulsion in optically driven YBa2Cu3O6.48

S Fava, G De Vecchi, G Jotzu, M Buzzi, T Gebert, Y Liu… - Nature, 2024 - nature.com
Coherent optical driving in quantum solids is emerging as a research frontier, with many
reports of interesting non-equilibrium quantum phases,,–and transient photo-induced …

Observation of interplay between phonon chirality and electronic band topology

FGG Hernandez, A Baydin, S Chaudhary, F Tay… - Science …, 2023 - science.org
The recently demonstrated chiral modes of lattice motion carry angular momentum and
therefore directly couple to magnetic fields. Notably, their magnetic moments are predicted …

Large effective magnetic fields from chiral phonons in rare-earth halides

J Luo, T Lin, J Zhang, X Chen, ER Blackert, R Xu… - Science, 2023 - science.org
Time-reversal symmetry (TRS) is pivotal for materials' optical, magnetic, topological, and
transport properties. Chiral phonons, characterized by atoms rotating unidirectionally around …

Light-induced magnetization from magnonic rectification

T Kahana, DA Bustamante Lopez, DM Juraschek - Science Advances, 2024 - science.org
Rectification describes the conversion of an oscillating field or current into a quasi-static one
and the most basic example of a rectifier is an AC/DC converter in electronics. This principle …

Giant effective magnetic moments of chiral phonons from orbit-lattice coupling

S Chaudhary, DM Juraschek, M Rodriguez-Vega… - Physical Review B, 2024 - APS
Circularly polarized lattice vibrations carry angular momentum and lead to magnetic
responses in applied magnetic fields or when resonantly driven with ultrashort laser pulses …

Phononic switching of magnetization by the ultrafast Barnett effect

CS Davies, FGN Fennema, A Tsukamoto, I Razdolski… - Nature, 2024 - nature.com
The historic Barnett effect describes how an inertial body with otherwise zero net magnetic
moment acquires spontaneous magnetization when mechanically spinning,. Breakthrough …

Gate-tunable phonon magnetic moment in bilayer graphene

XW Zhang, Y Ren, C Wang, T Cao, D **ao - Physical Review Letters, 2023 - APS
We develop a first-principles quantum scheme to calculate the phonon magnetic moment in
solids. As a showcase example, we apply our method to study gated bilayer graphene, a …

Real-time dynamics of angular momentum transfer from spin to acoustic chiral phonon in oxide heterostructures

IH Choi, SG Jeong, S Song, S Park, DB Shin… - Nature …, 2024 - nature.com
Chiral phonons have recently been explored as a novel degree of freedom in quantum
materials. The angular momentum carried by these quasiparticles is generated by the …

Dynamical multiferroicity and magnetic topological structures induced by the orbital angular momentum of light in a nonmagnetic material

L Gao, S Prokhorenko, Y Nahas, L Bellaiche - Physical Review Letters, 2023 - APS
Recent studies have revealed that chiral phonons resonantly excited by ultrafast laser
pulses carry magnetic moments and can enhance the magnetization of materials. In this …