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 …

Giant chiral magnetoelectric oscillations in a van der Waals multiferroic

FY Gao, X Peng, X Cheng, E Viñas Boström, DS Kim… - Nature, 2024 - nature.com
Helical spin structures are expressions of magnetically induced chirality, entangling the
dipolar and magnetic orders in materials,,–. The recent discovery of helical van der Waals …

Photoconductivity Multiplication in Semiconducting Few-Layer MoTe2

W Zheng, M Bonn, HI Wang - Nano letters, 2020 - ACS Publications
We report efficient photoconductivity multiplication in few-layer 2H-MoTe2 as a direct
consequence of an efficient steplike carrier multiplication with near unity quantum yield and …

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 …

Theory of coherent phonons in carbon nanotubes and graphene nanoribbons

GD Sanders, ART Nugraha, K Sato… - Journal of Physics …, 2013 - iopscience.iop.org
We survey our recent theoretical studies on the generation and detection of coherent radial
breathing mode (RBM) phonons in single-walled carbon nanotubes and coherent radial …

Coherent Lattice Vibrations in Mono- and Few-Layer WSe2

TY Jeong, BM **, SH Rhim, L Debbichi, J Park… - Acs Nano, 2016 - ACS Publications
We report the observation of coherent lattice vibrations in mono-and few-layer WSe2 in the
time domain, which were obtained by performing time-resolved transmission measurements …

A nanopump for low-temperature and efficient solar water evaporation

Y Zhao, K Zhao, J Yin, J Yang, J Xu, Y Gu… - Journal of Materials …, 2019 - pubs.rsc.org
Water evaporation is a ubiquitous phenomenon in nature and the essential component of
the water cycle on the earth. A high evaporation rate is required for application in …

Coherent optical phonons in diamond

K Ishioka, M Hase, M Kitajima, H Petek - Applied physics letters, 2006 - pubs.aip.org
The authors report femtosecond dynamics of the coherent optical phonon of single crystal
diamond. Sub-10 fs⁠, 395 nm laser pulses excite 40 THz coherent phonons with an …

Coherent lattice vibrations in single-walled carbon nanotubes

YS Lim, KJ Yee, JH Kim, EH Haroz, J Shaver… - Nano …, 2006 - ACS Publications
We have generated and detected coherent lattice vibrations in single-walled carbon
nanotubes corresponding to the radial breathing mode (RBM) using ultrashort laser pulses …

Temperature dependence of coherent A1g and Eg phonons of bismuth

K Ishioka, M Kitajima, OV Misochko - Journal of Applied Physics, 2006 - pubs.aip.org
Bismuth has been a model material in the study of femtosecond dynamics of coherent lattice
oscillations. The generation mechanism was first proposed to be displacive for the …