Direct time-resolved measurement of anharmonic lattice vibrations in ferroelectric crystals

1997 ◽  
Vol 107 (22) ◽  
pp. 9691-9694 ◽  
Author(s):  
Ciaran J. Brennan ◽  
Keith A. Nelson
Keyword(s):  
Lattice Vibrations ◽  
Time Resolved ◽  
Ferroelectric Crystals ◽  
Anharmonic Lattice

scholarly journals Anharmonic Lattice Vibrations in Small‐Molecule Organic Semiconductors

2020 ◽  
Vol 32 (10) ◽  
pp. 1908028 ◽  
Author(s):  
Maor Asher ◽  
Daniel Angerer ◽  
Roman Korobko ◽  
Yael Diskin‐Posner ◽  
David A. Egger ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Small Molecule ◽  
Lattice Vibrations ◽  
Anharmonic Lattice

First-principles theories for anharmonic lattice vibrations

2010 ◽  
Vol 133 (3) ◽  
pp. 034109 ◽  
Author(s):  
So Hirata ◽  
Murat Keçeli ◽  
Kiyoshi Yagi
Keyword(s):  
First Principles ◽  
Lattice Vibrations ◽  
Anharmonic Lattice

scholarly journals Computer Experiments on Ergodic Problems in Anharmonic Lattice Vibrations

1970 ◽  
Vol 45 ◽  
pp. 209-230 ◽  
Author(s):  
Nobuhiko Saitô ◽  
Naotake Ooyama ◽  
Yôji Aizawa ◽  
Hajime Hirooka
Keyword(s):  
Computer Experiments ◽  
Lattice Vibrations ◽  
Anharmonic Lattice

Anharmonic lattice vibrations in simple metals

1983 ◽  
Vol 27 (12) ◽  
pp. 7199-7208 ◽  
Author(s):  
J. Rosén ◽  
G. Grimvall
Keyword(s):  
Lattice Vibrations ◽  
Anharmonic Lattice

Ultrafast carrier dynamics in BiVO4 thin film photoanode material: interplay between free carriers, trapped carriers and low-frequency lattice vibrations

2016 ◽  
Vol 4 (47) ◽  
pp. 18516-18523 ◽  
Author(s):  
K. T. Butler ◽  
B. J. Dringoli ◽  
L. Zhou ◽  
P. M. Rao ◽  
A. Walsh ◽  
...  
Keyword(s):  
First Principles ◽  
Terahertz Spectroscopy ◽  
Low Frequency ◽  
Carrier Dynamics ◽  
Vibrational Modes ◽  
Lattice Vibrations ◽  
Time Resolved ◽  
Ultrafast Carrier Dynamics ◽  
Free Carriers ◽  
Ultrafast Carrier

We explore ultrafast carrier dynamics and interactions of photoexcited carriers with lattice vibrational modes in BiVO4 using time-resolved terahertz spectroscopy and first-principles phonon spectrum calculations.

Pump-Probe Study of Bi1-xSbx Alloys

1992 ◽  
Vol 291 ◽  
Author(s):  
J. Vidal ◽  
T.K. Cheng ◽  
A.W. Fung ◽  
H.J. Zeiger ◽  
G. Dresselhaus ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Lattice Dynamics ◽  
Optical Response ◽  
Vibrational Frequencies ◽  
Oscillatory Behavior ◽  
Lattice Vibrations ◽  
Time Resolved ◽  
Pump Probe ◽  
Model Based ◽  
Reflectivity Signal

ABSTRACTBi1-xSbx alloys undergo a semimetal-semiconductor transition at x = 0.065 and 0.22 and are semiconducting between these limits. We investigate this system by means of femtosecond time-resolved experiments, and observe an optical response similar to those in Bi, Sb, Te and Ti2O3. A previously-reported model describes the mechanism of generation of coherent lattice vibrations via the optically excited carriers in this class of materials. As predicted by the model, the modulated reflectivity signal ΔR/R in Bi.88Sb.12 shows a beating oscillatory behavior with the Bi-Bi and Bi-Sb A1g vibrational frequencies. Model-based calculations of the ΔR background relaxation time at different Sb compositions provide understanding of the carrier and lattice dynamics throughout the transition.

Sign in / Sign up

Export Citation Format

Share Document