The pump and probe technique in Raman spectroscopy of the E2 (high) mode is exploited to uncover the enhancing factor of the phonon transport across Ga1−xInxN/GaN interfaces. Two samples are investigated: one with a uniform x of 0.09 and another one with a graded variation in x from 0.17 to 0 along the depth direction. Lateral phonon transport is obtained by scanning the 532-nm probing laser from the irradiation position of the 325-nm heating laser. No difference in the lateral diffusion length is observed between the two samples, while the transport probability across the interface is higher for the sample with the graded variation in x than the sample with the uniform x of 0.09. The microscopic images of the decrease in the mode energy or the increase in temperature of the GaN layer reveal that the local phonon transport across the heterointerface is enhanced in regions with low differences in the phonon mode energy between the GaN and GaInN rather than the difference in crystal quality.
Skip Nav Destination
Article navigation
1 July 2024
Research Article|
July 01 2024
Local augmentation of phonon transport at GaInN/GaN heterointerface by introducing a graded variation of InN mole fraction
Special Collection:
Advances in Thermal Phonon Engineering and Thermal Management
Thee Ei Khaing Shwe
;
Thee Ei Khaing Shwe
(Data curation, Formal analysis, Investigation, Validation, Writing – review & editing)
1
Graduate School of Electrical and Electronic Engineering, Chiba University
, 1-33 Yayoicho, Inage-ku, Chiba 263-8522, Japan
Search for other works by this author on:
Tatsuya Asaji;
Tatsuya Asaji
(Data curation, Formal analysis, Investigation, Methodology, Validation, Writing – original draft)
1
Graduate School of Electrical and Electronic Engineering, Chiba University
, 1-33 Yayoicho, Inage-ku, Chiba 263-8522, Japan
Search for other works by this author on:
Daisuke Iida
;
Daisuke Iida
(Data curation, Formal analysis, Visualization)
2
Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology
, Thuwal 23955-6900, Saudi Arabia
Search for other works by this author on:
Mohammed A. Najmi
;
Mohammed A. Najmi
(Data curation, Validation)
2
Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology
, Thuwal 23955-6900, Saudi Arabia
Search for other works by this author on:
Kazuhiro Ohkawa
;
Kazuhiro Ohkawa
(Funding acquisition, Investigation, Resources, Validation, Writing – review & editing)
2
Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology
, Thuwal 23955-6900, Saudi Arabia
Search for other works by this author on:
Yoshihiro Ishitani
Yoshihiro Ishitani
a)
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Graduate School of Electrical and Electronic Engineering, Chiba University
, 1-33 Yayoicho, Inage-ku, Chiba 263-8522, Japan
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 125, 012105 (2024)
Article history
Received:
February 29 2024
Accepted:
June 15 2024
Citation
Thee Ei Khaing Shwe, Tatsuya Asaji, Daisuke Iida, Mohammed A. Najmi, Kazuhiro Ohkawa, Yoshihiro Ishitani; Local augmentation of phonon transport at GaInN/GaN heterointerface by introducing a graded variation of InN mole fraction. Appl. Phys. Lett. 1 July 2024; 125 (1): 012105. https://doi.org/10.1063/5.0206208
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
218
Views
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Broadband transparency in terahertz free-standing anapole metasurface
Isaac Appiah Otoo, Alexey Basharin, et al.
Related Content
Role of threading dislocations in strain relaxation during GaInN growth monitored by real-time X-ray reflectivity
Appl. Phys. Lett. (June 2017)
Intentional anisotropic strain relaxation in ( 11 2 ¯ 2 ) oriented Al1−xInxN one-dimensionally lattice matched to GaN
Appl. Phys. Lett. (September 2014)
Impact of cation-based localized electronic states on the conduction and valence band structure of Al1−xInxN alloys
Appl. Phys. Lett. (April 2014)
Energy transport analysis in a Ga0.84In0.16N/GaN heterostructure using microscopic Raman images employing simultaneous coaxial irradiation of two lasers
Appl. Phys. Lett. (April 2020)
Control of optical polarization properties by manipulation of anisotropic
strain in nonpolar m-plane GaInN/GaN quantum wells
Appl. Phys. Lett. (February 2019)