Brighter, faster, stronger: ultrafast scattering of free molecules

A Odate, A Kirrander, PM Weber… - Advances in Physics …, 2023 - Taylor & Francis
Advances in FEL technologies have contributed remarkably to various scientific fields over
the past decade, and ultrafast molecular dynamics is no exception. The ability to probe …

Analyzing Fundamental Properties of Two-Dimensional Materials by Raman Spectroscopy from Microscale to Nanoscale

H Wu, ML Lin, Y Zhou, X Zhang, PH Tan - Analytical Chemistry, 2023 - ACS Publications
Two-dimensional layered materials consist of chemically bonded monolayers with weak van
der Waals (vdW) forces that couple adjacent layers, enabling the preparation of few layers …

Terahertz field-induced metastable magnetization near criticality in FePS3

B Ilyas, T Luo, A von Hoegen, E Viñas Boström… - Nature, 2024 - nature.com
Controlling the functional properties of quantum materials with light has emerged as a
frontier of condensed-matter physics, leading to the discovery of various light-induced …

Two-Dimensional Terahertz Spectroscopy of Nonlinear Phononics in the Topological Insulator

TGH Blank, KA Grishunin, KA Zvezdin, NT Hai, JC Wu… - Physical review …, 2023 - APS
The interaction of a single-cycle terahertz electric field with the topological insulator MnBi 2
Te 4 triggers strongly anharmonic lattice dynamics, promoting fully coherent energy transfer …

Large Exchange Coupling Between Localized Spins and Topological Bands in MnBi2Te4

H Padmanabhan, VA Stoica, PK Kim… - Advanced …, 2022 - Wiley Online Library
Magnetism in topological materials creates phases exhibiting quantized transport
phenomena with potential technological applications. The emergence of such phases relies …

Ultrafast coherent interlayer phonon dynamics in atomically thin layers of MnBi2Te4

FM Bartram, YC Leng, Y Wang, L Liu, X Chen… - npj Quantum …, 2022 - nature.com
Abstract The atomically thin MnBi2Te4 crystal is a novel magnetic topological insulator,
exhibiting exotic quantum physics. Here we report a systematic investigation of ultrafast …

Coherent-Phonon-Driven Intervalley Scattering and Rabi Oscillation in Multivalley 2D Materials

C Wang, X Liu, Q Chen, D Chen, Y Wang, S Meng - Physical Review Letters, 2023 - APS
Resolving the complete electron scattering dynamics mediated by coherent phonons is
crucial for understanding electron-phonon couplings beyond equilibrium. Here we present a …

Quantum imaging of magnetic phase transitions and spin fluctuations in intrinsic magnetic topological nanoflakes

NJ McLaughlin, C Hu, M Huang, S Zhang, H Lu… - Nano Letters, 2022 - ACS Publications
Topological materials featuring exotic band structures, unconventional current flow patterns,
and emergent organizing principles offer attractive platforms for the development of next …

Quantum-sized topological insulators/semimetals enable ultrahigh and broadband saturable absorption

Z Chen, X Sui, Z Li, Y Li, X Liu, Y Zhang - Nanoscale Horizons, 2023 - pubs.rsc.org
Two-dimensional topological insulators/semimetals have recently attracted much attention.
However, quantum-sized topological insulators/semimetals with intrinsic characteristics …

Picosecond Ultrasonics in Magnetic Topological Insulator MnBi2Te4

J Fonseca, GM Diederich, D Ovchinnikov, J Yan… - Nano Letters, 2024 - ACS Publications
MnBi2Te4 is a magnetic topological insulator with layered A-type antiferromagnetic order. It
exhibits a rich layer-and magnetic-state dependent topological phase diagram; however …