Acoustic waves are elastic vibrations propagating either in the bulk (bulk acoustic waves) or along the surface (surface acoustic waves, SAWs) of a solid. The latter resemble seismic waves created during earthquakes. Acoustic waves can be electrically excited using piezoelectric transducers, a technique widely used in signal processing. In this core research area, we exploit high-frequency acoustic waves for the modulation and control of semiconductor nanostructures.
The fields produced by acoustic waves induce a time- and spatial dependent modulation of the materials band structure, thus changing the band gap as well as the optical properties. In addition, acoustic waves in piezoelectric materials are accompanied by a piezoelectric field, which strongly interacts with free carriers. Moreover, due to their moving nature, acoustic fields can generate mobile potentials for the storage and transport of carriers.
Our current areas of interest include the following topics:
18 | Autor | D. L. Chafatinos , A. S. Kuznetsov , S. Anguiano , A. E. Bruchhausen , A. A. Reynoso , K. Biermann , P. V. Santos , A. Fainstein |
Titel |
Polariton-driven phonon laser |
|
Source | Nat. Commun. , 11 , 4552 ( 2020 ) | |
DOI : 10.1038/s41467-020-18358-z | Cite : Bibtex RIS |
17 | Autor | A. Hernández-Mínguez , A. V. Poshakinskiy , M. Hollenbach , P. V. Santos , G. V. Astakhov |
Titel |
Anisotropic Spin-Acoustic Resonance in Silicon Carbide at Room Temperature |
|
Source | Phys. Rev. Lett. , 125 , 107702 ( 2020 ) | |
DOI : 10.1103/PhysRevLett.125.107702 | Download: PDF | Cite : Bibtex RIS |
16 | Autor | R. Fandan , J. Pedros , A. Hernández-Mínguez , F. Iikawa , P. V. Santos , A. Boscá , F. Calle |
Titel |
Dynamic local strain in graphene generated by surface acoustic waves |
|
Source | Nano Lett. , 20 , 402 ( 2020 ) | |
DOI : 10.1021/acs.nanolett.9b04085 | arxiv: 1909.12685 | Cite : Bibtex RIS |
15 | Autor | A. Hernández-Mínguez , F. Macià , J. M. Hernandez , J. Herfort , P. V. Santos |
Titel |
Large non-reciprocal propagation of surface acoustic waves in epitaxial ferromagnetic/semicondutor hybrid structures |
|
Source | Phys. Rev. Appl. , 13 , 044018 ( 2020 ) | |
DOI : 10.1103/PhysRevApplied.13.044018 | arxiv: 1911.11072 | Cite : Bibtex RIS |
14 | Autor | M. E. Msall , P. V. Santos |
Titel |
Focusing Surface Acoustic Wave Microcavities on GaAs |
|
Source | Phys. Rev. Appl. , 13 , 014037 ( 2020 ) | |
DOI : 10.1103/PhysRevApplied.13.014037 | arxiv: 1908.04980 | Cite : Bibtex RIS |
13 | Autor | A. Crespo-Poveda , D. D. Bühler , A. Cantarero Sáez , P. V. Santos , M. M. de Lima, Jr. |
Titel |
Semiconductor optical waveguide devices modulated by surface acoustic waves |
|
Source | J. Phys. D: Appl. Phys. , 52 , 253001 ( 2019 ) | |
DOI : 10.1088/1361-6463/ab1464 | arxiv: arXiv:1811.03051 | Cite : Bibtex RIS |
12 | Autor | D. H. O. Machado , A. Crespo-Poveda , A. S. Kuznetsov , K. Biermann , L. V. A. Scalvi , P. V. Santos |
Titel |
Generation and propagation of super-high-frequency bulk acoustic wave on GaAs |
|
Source | Phys. Rev. Appl. , 12 , 044013 ( 2019 ) | |
DOI : 10.1103/PhysRevApplied.12.044013 | arxiv: arXiv:1907.09787v1 | Cite : Bibtex RIS |
11 | Autor | P. V. Santos , M. Msall , S. Ludwig |
Titel |
Acoustic field for the control of electronic excitations in semiconductor nanostructures |
|
Source | IEEE , Proceedings of the 2018 Ultrasonic Symposium , 1 ( 2018 ) | |
DOI : 10.1109/ULTSYM.2018.8579769 | Cite : Bibtex RIS |
10 | Autor | F. Iikawa , A. Hernández-Mínguez , I. Aharonovich , S. Nakhaie , Y.-T. Liou , J. M. J. Lopes , P. V. Santos |
Titel |
Acoustically modulated optical emission of hexagonal boron nitride layers |
|
Source | Appl. Phys. Lett. , 114 , 171104 ( 2019 ) | |
DOI : 10.1063/1.5093299 | Download: PDF | Cite : Bibtex RIS |
9 | Autor | A. S. Kuznetsov , K. Biermann , P. V. Santos |
Titel |
Dynamic acousto-optical control of confined polariton condensates: From single traps to coupled lattices |
|
Source | Phys. Rev. Res. , 1 , 023030 ( 2019 ) | |
DOI : 10.1103/PhysRevResearch.1.023030 | Cite : Bibtex RIS |
8 | Autor | P. L. J. Helgers , H. Sanada , Y. Kunihashi , A. Rubino , C. J. B. Ford , K. Biermann , P. V. Santos |
Titel |
Sidewall Quantum Wires on GaAs(001) Substrates |
|
Source | Phys. Rev. Appl. , 11 , 064017 ( 2019 ) | |
DOI : 10.1103/PhysRevApplied.11.064017 | arxiv: 1901.02735 | Cite : Bibtex RIS |
7 | Autor | M. Yuan , A. Hernández-Mínguez , K. Biermann , P. V. Santos |
Titel |
Tunneling blockade and single-photon emission in GaAs double quantum wells |
|
Source | Phys. Rev. B , 98 , 155311 ( 2018 ) | |
DOI : 10.1103/PhysRevB.98.155311 | Download: PDF | Cite : Bibtex RIS |
6 | Autor | A. Hernández-Mínguez , J. Lähnemann , S. Nakhaie , J. M. J. Lopes , P. V. Santos |
Titel |
Luminescent Defects in a Few-Layer h-BN Film Grown by Molecular Beam Epitaxy |
|
Source | Phys. Rev. Appl. , 10 , 044031 ( 2018 ) | |
DOI : 10.1103/PhysRevApplied.10.044031 | arxiv: 1902.08528 | Cite : Bibtex RIS |
5 | Autor | C. Hubert , Y. Baruchi , Y. Mazuz-Harpaz , K. Cohen , K. Biermann , M. Lemeshko , K. West , L. Pfeiffer , R. Rapaport , P. V. Santos |
Titel |
Attractive Dipolar Coupling between Stacked Exciton Fluids |
|
Source | Phys. Rev. X , 9 , 021026 ( 2019 ) | |
DOI : 10.1103/PhysRevX.9.021026 | Download: PDF | Cite : Bibtex RIS |
4 | Autor | A. Hernández-Mínguez , Y.-T. Liou , P. V. Santos |
Titel |
Interaction of surface acoustic waves with electronic excitations in graphene |
|
Source | J. Phys. D: Appl. Phys. , 51 , 383001 ( 2018 ) | |
DOI : 10.1088/1361-6463/aad593 | arxiv: 1811.00040 | Cite : Bibtex RIS |
3 | Autor | A. S. Kuznetsov , P. L. J. Helgers , K. Biermann , P. V. Santos |
Titel |
Quantum confinement of exciton-polaritons in structured (Al,Ga)As microcavities |
|
Source | Phys. Rev. B , 97 , 195309 ( 2018 ) | |
DOI : 10.1103/PhysRevB.97.195309 | Download: PDF | Cite : Bibtex RIS |
2 | Autor | Y.-T. Liou , A. Hernández-Mínguez , J. Herfort , J. M. J. Lopes , A. Tahraoui , P. V. Santos |
Titel |
Acousto-electric transport in MgO/ZnO-covered graphene on SiC |
|
Source | J. Phys. D: Appl. Phys. , 50 , 464008 ( 2017 ) | |
DOI : 10.1088/1361-6463/aa8e8a | arxiv: 1708.05236 | Cite : Bibtex RIS |
1 | Autor | M. Yuan , C. Hubert , S. Rauwerdink , A. Tahraoui , B von Someren , K. Biermann , P. V. Santos |
Titel |
Generation of surface acoustic waves on doped semiconductor substrates |
|
Source | J. Phys. D: Appl. Phys. , 50 , 484004 ( 2017 ) | |
DOI : 10.1088/1361-6463/aa92a5 | Cite : Bibtex RIS |