https://doi.org/10.1051/epjconf/201920504017
Ultrafast lattice dynamics in lead selenide quantum dot
1 Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing, 100190, China
2 Physics Department and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, 32310, USA
3 Center for Ultrafast Science and Technology, Key Laboratory for Laser Plasmas (Ministry of Education), School of Physics and Astronomy, Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai, 200240, China
* e-mail: xw@iphy.ac.cn
** e-mail: jcao@magnet.fsu.edu
Published online: 16 April 2019
We monitored the femtosecond-laser-induced lattice dynamics in PbSe quantum dots by ultrafast electron diffraction. The electron-phonon coupling didn’t show phonon bottleneck. And lattice dilation exhibited unusual features. Heat transport to the substrate deviated significantly from Fourier’s Law.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
