Hidden structures: a driving factor to achieve low thermal conductivity and high thermoelectric performance

D Sarkar, A Bhui, I Maria, M Dutta… - Chemical Society Reviews, 2024 - pubs.rsc.org
The long-range periodic atomic arrangement or the lack thereof in solids typically dictates
the magnitude and temperature dependence of their lattice thermal conductivity (κlat) …

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 …

Terahertz electric-field-driven dynamical multiferroicity in SrTiO3

M Basini, M Pancaldi, B Wehinger, M Udina… - Nature, 2024 - nature.com
The emergence of collective order in matter is among the most fundamental and intriguing
phenomena in physics. In recent years, the dynamical control and creation of novel ordered …

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 …

Fluctuation-enhanced phonon magnetic moments in a polar antiferromagnet

F Wu, S Bao, J Zhou, Y Wang, J Sun, J Wen, Y Wan… - Nature Physics, 2023 - nature.com
Phonons are the quasiparticles of collective lattice excitations that may carry finite angular
momenta, but commonly exhibit negligible magnetic moments. A large phonon magnetic …

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 …

Spin–orbit exciton–induced phonon chirality in a quantum magnet

D Lujan, J Choe, S Chaudhary, G Ye… - Proceedings of the …, 2024 - pnas.org
The interplay of charge, spin, lattice, and orbital degrees of freedom in correlated materials
often leads to rich and exotic properties. Recent studies have brought new perspectives to …

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 …

Phonon magnetic moment from electronic topological magnetization

Y Ren, C **ao, D Saparov, Q Niu - Physical review letters, 2021 - APS
The traditional theory of magnetic moments for chiral phonons is based on the picture of the
circular motion of the Born effective charge, typically yielding a small fractional value of the …

Chiral phonon induced spin polarization

J Fransson - Physical Review Research, 2023 - APS
The current understanding of chirality suggests the existence of a connection between
structure and angular momentum, including spin. This is particularly emphasized in the …