skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Propagation of THz acoustic wave packets in GaN at room temperature

Abstract

We use femtosecond laser pulses to generate coherent longitudinal acoustic phonons at frequencies of 1–1.4 THz and study their propagation in GaN-based structures at room temperature. Two InGaN-GaN multiple-quantum-well (MQW) structures separated by a 2.3 μm-thick GaN spacer are used to simultaneously generate phonon wave packets with a central frequency determined by the period of the MQW and detect them after passing through the spacer. The measurements provide lower bounds for phonon lifetimes in GaN, which are still significantly lower than those from first principles predictions. The material Q-factor at 1 THz is found to be at least as high as 900. The measurements also demonstrate a partial specular reflection from the free surface of GaN at 1.4 THz. This work shows the potential of laser-based methods for THz range phonon spectroscopy and the promise for extending the viable frequency range of GaN-based acousto-electronic devices.

Authors:
 [1];  [2];  [2];  [2];  [3]; ORCiD logo [4];  [1];  [3];  [3];  [3];  [2];  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. National Taiwan Univ., Taipei (Taiwan)
  3. Univ. of Houston, TX (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1429193
Alternate Identifier(s):
OSTI ID: 1419701
Grant/Contract Number:  
AC05-00OR22725; FG02-00ER15087
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 6; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Maznev, A. A., Hung, T.-C., Yao, Y.-T., Chou, T.-H., Gandhi, J. S., Lindsay, Lucas R., Shin, H. D., Stokes, D. W., Forrest, R. L., Bensaoula, A., Sun, C.-K., and Nelson, K. A. Propagation of THz acoustic wave packets in GaN at room temperature. United States: N. p., 2018. Web. doi:10.1063/1.5008852.
Maznev, A. A., Hung, T.-C., Yao, Y.-T., Chou, T.-H., Gandhi, J. S., Lindsay, Lucas R., Shin, H. D., Stokes, D. W., Forrest, R. L., Bensaoula, A., Sun, C.-K., & Nelson, K. A. Propagation of THz acoustic wave packets in GaN at room temperature. United States. doi:10.1063/1.5008852.
Maznev, A. A., Hung, T.-C., Yao, Y.-T., Chou, T.-H., Gandhi, J. S., Lindsay, Lucas R., Shin, H. D., Stokes, D. W., Forrest, R. L., Bensaoula, A., Sun, C.-K., and Nelson, K. A. Mon . "Propagation of THz acoustic wave packets in GaN at room temperature". United States. doi:10.1063/1.5008852. https://www.osti.gov/servlets/purl/1429193.
@article{osti_1429193,
title = {Propagation of THz acoustic wave packets in GaN at room temperature},
author = {Maznev, A. A. and Hung, T.-C. and Yao, Y.-T. and Chou, T.-H. and Gandhi, J. S. and Lindsay, Lucas R. and Shin, H. D. and Stokes, D. W. and Forrest, R. L. and Bensaoula, A. and Sun, C.-K. and Nelson, K. A.},
abstractNote = {We use femtosecond laser pulses to generate coherent longitudinal acoustic phonons at frequencies of 1–1.4 THz and study their propagation in GaN-based structures at room temperature. Two InGaN-GaN multiple-quantum-well (MQW) structures separated by a 2.3 μm-thick GaN spacer are used to simultaneously generate phonon wave packets with a central frequency determined by the period of the MQW and detect them after passing through the spacer. The measurements provide lower bounds for phonon lifetimes in GaN, which are still significantly lower than those from first principles predictions. The material Q-factor at 1 THz is found to be at least as high as 900. The measurements also demonstrate a partial specular reflection from the free surface of GaN at 1.4 THz. This work shows the potential of laser-based methods for THz range phonon spectroscopy and the promise for extending the viable frequency range of GaN-based acousto-electronic devices.},
doi = {10.1063/1.5008852},
journal = {Applied Physics Letters},
number = 6,
volume = 112,
place = {United States},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Ab-initio longitudinal acoustic phonon lifetime vs frequency in wurtzite GaN at 300 K for the wave vector direction along the c axis (circles) and lower bound experimental data from the current work (crosses, each symbol corresponds to a different point on the sample).

Save / Share:

Works referenced in this record:

Intrinsic lattice thermal conductivity of semiconductors from first principles
journal, December 2007

  • Broido, D. A.; Malorny, M.; Birner, G.
  • Applied Physics Letters, Vol. 91, Issue 23
  • DOI: 10.1063/1.2822891

Phonon Anharmonicities in Graphite and Graphene
journal, October 2007


Lifetimes of Confined Acoustic Phonons in Ultrathin Silicon Membranes
journal, February 2013


Coherent Zone-Folded Longitudinal Acoustic Phonons in Semiconductor Superlattices: Excitation and Detection
journal, February 1999


Picosecond ultrasonic measurements of attenuation of longitudinal acoustic phonons in silicon
journal, November 2009


Heat transport in silicon from first-principles calculations
journal, August 2011


The phonon viscosity tensor of Si, Ge, GaAs, and InSb
journal, January 1978


THz acoustic phonon spectroscopy and nanoscopy by using piezoelectric semiconductor heterostructures
journal, February 2015


Coherent Oscillation of Zone-Folded Phonon Modes in GaAs-AlAs Superlattices
journal, August 1994


Coherent Acoustic Phonon Oscillations in Semiconductor Multiple Quantum Wells with Piezoelectric Fields
journal, January 2000


Lifetime of sub-THz coherent acoustic phonons in a GaAs-AlAs superlattice
journal, January 2013

  • Maznev, A. A.; Hofmann, Felix; Jandl, Adam
  • Applied Physics Letters, Vol. 102, Issue 4
  • DOI: 10.1063/1.4789520

Nanoscale thermal transport. II. 2003–2012
journal, March 2014

  • Cahill, David G.; Braun, Paul V.; Chen, Gang
  • Applied Physics Reviews, Vol. 1, Issue 1
  • DOI: 10.1063/1.4832615

Molecular beam epitaxy growth of InGaN-GaN superlattices for optoelectronic devices
journal, May 2011

  • Boney, Chris; Starikov, David; Hernandez, Ivan
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 29, Issue 3
  • DOI: 10.1116/1.3549887

Transmission of light through quantum heterostructures modulated by coherent acoustic phonons
journal, February 2004

  • Chern, Gia-Wei; Lin, Kung-Hsuan; Sun, Chi-Kuang
  • Journal of Applied Physics, Vol. 95, Issue 3
  • DOI: 10.1063/1.1637957

Inhomogeneous Electron Gas
journal, November 1964


Guide lines for the selection of acoustooptic materials
journal, April 1970


Broadband terahertz ultrasonic transducer based on a laser-driven piezoelectric semiconductor superlattice
journal, January 2012


Graphene quilts for thermal management of high-power GaN transistors
journal, January 2012

  • Yan, Zhong; Liu, Guanxiong; Khan, Javed M.
  • Nature Communications, Vol. 3, Issue 1
  • DOI: 10.1038/ncomms1828

Gallium Nitride as an Electromechanical Material
journal, December 2014

  • Rais-Zadeh, Mina; Gokhale, Vikrant Jayant; Ansari, Azadeh
  • Journal of Microelectromechanical Systems, Vol. 23, Issue 6
  • DOI: 10.1109/JMEMS.2014.2352617

Specular Scattering Probability of Acoustic Phonons in Atomically Flat Interfaces
journal, December 2009


Anharmonic Phonon Lifetimes in Semiconductors from Density-Functional Perturbation Theory
journal, August 1995


Terahertz coherent acoustic experiments with semiconductor superlattices
journal, November 2011

  • Huynh, A.; Perrin, B.; Jusserand, B.
  • Applied Physics Letters, Vol. 99, Issue 19
  • DOI: 10.1063/1.3658458

Improved Thermal Interfaces of GaN–Diamond Composite Substrates for HEMT Applications
journal, January 2013

  • Cho, Jungwan; Li, Zijian; Bozorg-Grayeli, Elah
  • IEEE Transactions on Components, Packaging and Manufacturing Technology, Vol. 3, Issue 1
  • DOI: 10.1109/TCPMT.2012.2223818

Photo-excited charge carriers suppress sub-terahertz phonon mode in silicon at room temperature
journal, October 2016

  • Liao, Bolin; Maznev, A. A.; Nelson, Keith A.
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms13174

Direct measurement of coherent subterahertz acoustic phonons mean free path in GaAs
journal, May 2016


Surface generation and detection of phonons by picosecond light pulses
journal, September 1986


Generation mechanism of terahertz coherent acoustic phonons in Fe
journal, June 2016


Thermal Conductivity and Large Isotope Effect in GaN from First Principles
journal, August 2012


Phonon interference and thermal conductance reduction in atomic-scale metamaterials
journal, May 2014

  • Han, Haoxue; Potyomina, Lyudmila G.; Darinskii, Alexandre A.
  • Physical Review B, Vol. 89, Issue 18
  • DOI: 10.1103/PhysRevB.89.180301

Phonon wave-packet dynamics at semiconductor interfaces by molecular-dynamics simulation
journal, April 2002

  • Schelling, P. K.; Phillpot, S. R.; Keblinski, P.
  • Applied Physics Letters, Vol. 80, Issue 14
  • DOI: 10.1063/1.1465106

Semiconductor superlattices: A tool for terahertz acoustics
journal, February 2015


Phonon wave-packet interference and phonon tunneling based energy transport across nanostructured thin films
journal, June 2010

  • Tian, Z. T.; White, B. E.; Sun, Y.
  • Applied Physics Letters, Vol. 96, Issue 26
  • DOI: 10.1063/1.3458831

Spectral analysis of high-harmonic coherent acoustic phonons in piezoelectric semiconductor multiple quantum wells
journal, March 2003


Ab initio calculation of the linewidth of various phonon modes in germanium and silicon
journal, April 2003


Self-Consistent Equations Including Exchange and Correlation Effects
journal, November 1965


Sound velocity of AlxGa1−xN thin films obtained by surface acoustic-wave measurements
journal, May 1998

  • Deger, C.; Born, E.; Angerer, H.
  • Applied Physics Letters, Vol. 72, Issue 19
  • DOI: 10.1063/1.121368

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.