Recent development of ultrafast optical characterizations for quantum materials

T Dong, SJ Zhang, NL Wang - Advanced Materials, 2023 - Wiley Online Library
The advent of intense ultrashort optical pulses spanning a frequency range from terahertz to
the visible has opened a new era in the experimental investigation and manipulation of …

Interaction of coherent phonons with defects and elementary excitations

M Hase, M Kitajima - Journal of Physics: Condensed Matter, 2010 - iopscience.iop.org
We present an overview of the feasibility of using coherent phonon spectroscopy to study
interaction dynamics of excited lattice vibrations with their environments. By exploiting the …

Strongly Coupled Coherent Phonons in Single-Layer MoS2

C Trovatello, HPC Miranda, A Molina-Sanchez… - ACS …, 2020 - ACS Publications
We present a transient absorption setup combining broadband detection over the visible–
UV range with high temporal resolution (∼ 20 fs) which is ideally suited to trigger and detect …

Simultaneous Observation of Carrier-Specific Redistribution and Coherent Lattice Dynamics in 2H-MoTe2 with Femtosecond Core-Level Spectroscopy

AR Attar, HT Chang, A Britz, X Zhang, MF Lin… - ACS …, 2020 - ACS Publications
We employ few-femtosecond extreme ultraviolet (XUV) transient absorption spectroscopy to
reveal simultaneously the intra-and interband carrier relaxation and the light-induced …

Nanoscale coherent phonon spectroscopy

S Liu, A Hammud, I Hamada, M Wolf, M Müller… - Science …, 2022 - science.org
Coherent phonon spectroscopy can provide microscopic insight into ultrafast lattice
dynamics and its coupling to other degrees of freedom under nonequilibrium conditions …

Coupling of a high-energy excitation to superconducting quasiparticles in a cuprate from coherent charge fluctuation spectroscopy

B Mansart, J Lorenzana, A Mann… - Proceedings of the …, 2013 - National Acad Sciences
Dynamical information on spin degrees of freedom of proteins or solids can be obtained by
NMR and electron spin resonance. A technique with similar versatility for charge degrees of …

Disentanglement of the Electronic and Lattice Parts of the Order Parameter<? format?> in a 1D Charge Density Wave System Probed by Femtosecond Spectroscopy

H Schäfer, VV Kabanov, M Beyer, K Biljakovic… - Physical review …, 2010 - APS
We report on the high resolution studies of the temperature (T) dependence of the q= 0
phonon spectrum in the quasi-one-dimensional charge density wave (CDW) compound K …

Coherent phonon generation in time-dependent density functional theory

Y Shinohara, K Yabana, Y Kawashita, JI Iwata… - Physical Review B …, 2010 - APS
We apply the adiabatic time-dependent density functional theory (TDDFT) to the generation
of coherent optical phonons in Si crystals by intense laser pulses. The theory reproduces the …

Size‐dependent structures and optical absorption of boron‐hyperdoped silicon nanocrystals

Z Ni, X Pi, S Zhou, T Nozaki… - Advanced Optical …, 2016 - Wiley Online Library
Hyperdoping silicon nanocrystals (Si NCs) is emerging as an effective means to obtain
novel properties such as localized surface plasmon resonance (LSPR) from Si. Here it is …

Optical probing of ultrafast electronic decay in Bi and Sb with slow phonons

JJ Li, J Chen, DA Reis, S Fahy, R Merlin - Physical review letters, 2013 - APS
Illumination with laser sources leads to the creation of excited electronic states of particular
symmetries, which can drive isosymmetric vibrations. Here, we use a combination of ultrafast …