Ultrafast lattice dynamics in lead selenide quantum dot

被引：0
|
作者：
Wang, Xuan [1 ]
Gorfien, Matthew [2 ,3 ]
Cao, Jianming [2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China
[2] Florida State Univ, Phys Dept, Tallahassee, FL 32310 USA
[3] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
[4] Shanghai Jiao Tong Univ, Ctr Ultrafast Sci & Technol, Sch Phys & Astron, Key Lab Laser Plasmas,Minist Educ,Collaborat Inno, Shanghai 200240, Peoples R China
来源：
XXI INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA 2018 (UP 2018) | 2019年 / 205卷
基金：
美国国家科学基金会;
关键词：
COHERENT ACOUSTIC PHONONS; MECHANISMS;
D O I：
10.1051/epjconf/201920504017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
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页数：3
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