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Soranzio D, Puntel D, Tuniz M, Majchrzak PE, Milloch A, Olsen NM, Bronsch W, Jessen BS, Fainozzi D, Pelli Cresi JS, De Angelis D, Foglia L, Mincigrucci R, Zhu X, Dean CR, Ulstrup S, Banfi F, Giannetti C, Parmigiani F, Bencivenga F, Cilento F. Impact of MoS 2 Monolayers on the Thermoelastic Response of Silicon Heterostructures. ACS APPLIED NANO MATERIALS 2024; 7:15317-15324. [PMID: 39022450 PMCID: PMC11249974 DOI: 10.1021/acsanm.4c02096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 06/19/2024] [Accepted: 06/21/2024] [Indexed: 07/20/2024]
Abstract
Understanding the thermoelastic response of a nanostructure is crucial for the choice of materials and interfaces in electronic devices with improved and tailored transport properties at the nanoscale. Here, we show how the deposition of a MoS2 monolayer can strongly modify the nanoscale thermoelastic dynamics of silicon substrates close to their interface. We demonstrate this by creating a transient grating with extreme ultraviolet light, using ultrashort free-electron laser pulses, whose ≈84 nm period is comparable to the size of elements typically used in nanodevices, such as electric contacts and nanowires. The thermoelastic response, featuring coherent acoustic waves and incoherent relaxation, is tangibly modified by the presence of monolayer MoS2. Namely, we observed a major reduction of the amplitude of the surface mode, which is almost suppressed, while the longitudinal mode is basically unperturbed, aside from a faster decay of the acoustic modulations. We interpret this behavior as a selective modification of the surface elasticity, and we discuss the conditions to observe such effect, which may be of immediate relevance for the design of Si-based nanoscale devices.
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Affiliation(s)
- Davide Soranzio
- Institute
for Quantum Electronics, Eidgenössische
Technische Hochschule (ETH) Zürich, CH-8093 Zurich, Switzerland
| | - Denny Puntel
- Dipartimento
di Fisica, Università degli Studi
di Trieste, IT-34127 Trieste, Italy
| | - Manuel Tuniz
- Dipartimento
di Fisica, Università degli Studi
di Trieste, IT-34127 Trieste, Italy
| | - Paulina E. Majchrzak
- Department
of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - Alessandra Milloch
- Department
of Mathematics and Physics, Università
Cattolica del Sacro Cuore, IT-25133 Brescia, Italy
- ILAMP
(Interdisciplinary Laboratories for Advanced Materials Physics), Università Cattolica del Sacro Cuore, IT-25133 Brescia, Italy
- Department
of Physics and Astronomy, KU Leuven, B-3001 Leuven, Belgium
| | - Nicholas M. Olsen
- Department
of Chemistry, Columbia University, New York, New York NY-10027, United
States
| | - Wibke Bronsch
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
| | - Bjarke S. Jessen
- Department
of Physics, Columbia University, New York, New York 10027, United States
| | - Danny Fainozzi
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
| | - Jacopo S. Pelli Cresi
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
| | - Dario De Angelis
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
| | - Laura Foglia
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
| | - Riccardo Mincigrucci
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
| | - Xiaoyang Zhu
- Department
of Chemistry, Columbia University, New York, New York NY-10027, United
States
| | - Cory R. Dean
- Department
of Physics, Columbia University, New York, New York 10027, United States
| | - Søren Ulstrup
- Department
of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - Francesco Banfi
- Université de Lyon, CNRS, Université Claude Bernard
Lyon 1, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - Claudio Giannetti
- Department
of Mathematics and Physics, Università
Cattolica del Sacro Cuore, IT-25133 Brescia, Italy
- ILAMP
(Interdisciplinary Laboratories for Advanced Materials Physics), Università Cattolica del Sacro Cuore, IT-25133 Brescia, Italy
- CNR-INO (National
Institute of Optics), IT-25123 Brescia, Italy
| | - Fulvio Parmigiani
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
- International Faculty, University of Cologne, Albertus-Magnus-Platz, D-50923 Cologne, Germany
| | - Filippo Bencivenga
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
| | - Federico Cilento
- Elettra—Sincrotrone
Trieste S.C.p.A., Strada Statale 14, km 163.5, IT-34149 Trieste, Italy
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Ukleev V, Leroy L, Mincigrucci R, De Angelis D, Fainozzi D, Khatu NN, Paltanin E, Foglia L, Bencivenga F, Luo C, Ruske F, Radu F, Svetina C, Staub U. Transient grating spectroscopy on a DyCo 5 thin film with femtosecond extreme ultraviolet pulses. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2024; 11:025101. [PMID: 38476300 PMCID: PMC10929737 DOI: 10.1063/4.0000223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 02/13/2024] [Indexed: 03/14/2024]
Abstract
Surface acoustic waves (SAWs) are excited by femtosecond extreme ultraviolet (EUV) transient gratings (TGs) in a room-temperature ferrimagnetic DyCo5 alloy. TGs are generated by crossing a pair of EUV pulses from a free electron laser with the wavelength of 20.8 nm matching the Co M-edge, resulting in a SAW wavelength of Λ = 44 nm. Using the pump-probe transient grating scheme in reflection geometry, the excited SAWs could be followed in the time range of -10 to 100 ps in the thin film. Coherent generation of TGs by ultrafast EUV pulses allows to excite SAW in any material and to investigate their couplings to other dynamics, such as spin waves and orbital dynamics. In contrast, we encountered challenges in detecting electronic and magnetic signals, potentially due to the dominance of the larger SAW signal and the weakened reflection signal from underlying layers. A potential solution for the latter challenge involves employing soft x-ray probes, albeit introducing additional complexities associated with the required grazing incidence geometry.
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Affiliation(s)
- Victor Ukleev
- Helmholtz-Zentrum Berlin für Materialien und Energie, D-12489 Berlin, Germany
| | - Ludmila Leroy
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | | | - Dario De Angelis
- Elettra—Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Danny Fainozzi
- Elettra—Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | | | - Ettore Paltanin
- Elettra—Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | - Laura Foglia
- Elettra—Sincrotrone Trieste S.C.p.A., 34149 Basovizza, Trieste, Italy
| | | | - Chen Luo
- Helmholtz-Zentrum Berlin für Materialien und Energie, D-12489 Berlin, Germany
| | - Florian Ruske
- Helmholtz-Zentrum Berlin für Materialien und Energie, D-12489 Berlin, Germany
| | - Florin Radu
- Helmholtz-Zentrum Berlin für Materialien und Energie, D-12489 Berlin, Germany
| | | | - Urs Staub
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
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Hadi M, Luo H, Pailhès S, Tanguy A, Gravouil A, Capotondi F, De Angelis D, Fainozzi D, Foglia L, Mincigrucci R, Paltanin E, Pedersoli E, Pelli-Cresi JS, Bencivenga F, Giordano VM. The effect of echoes interference on phonon attenuation in a nanophononic membrane. Nat Commun 2024; 15:1317. [PMID: 38351136 PMCID: PMC10864405 DOI: 10.1038/s41467-024-45571-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 01/29/2024] [Indexed: 02/16/2024] Open
Abstract
Nanophononic materials are characterized by a periodic nanostructuration, which may lead to coherent scattering of phonons, enabling interference and resulting in modified phonon dispersions. We have used the extreme ultraviolet transient grating technique to measure phonon frequencies and lifetimes in a low-roughness nanoporous phononic membrane of SiN at wavelengths between 50 and 100 nm, comparable to the nanostructure lengthscale. Surprisingly, phonon frequencies are only slightly modified upon nanostructuration, while phonon lifetime is strongly reduced. Finite element calculations indicate that this is due to coherent phonon interference, which becomes dominant for wavelengths between ~ half and twice the inter-pores distance. Despite this, vibrational energy transport is ensured through an energy flow among the coherent modes created by reflections. This interference of phonon echos from periodic interfaces is likely another aspect of the mutual coherence effects recently highlighted in amorphous and complex crystalline materials and, in this context, could be used to tailor transport properties of nanostructured materials.
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Affiliation(s)
- Mohammad Hadi
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne cedex, France
| | - Haoming Luo
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne cedex, France
- LaMCos, INSA-Lyon, CNRS UMR5259, Université de Lyon, F-69621, Villeurbanne Cedex, France
- LMS, CNRS, École Polytechnique, Institut Polytechnique de Paris, 91128, Palaiseau, France
| | - Stéphane Pailhès
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne cedex, France
| | - Anne Tanguy
- LaMCos, INSA-Lyon, CNRS UMR5259, Université de Lyon, F-69621, Villeurbanne Cedex, France
| | - Anthony Gravouil
- LaMCos, INSA-Lyon, CNRS UMR5259, Université de Lyon, F-69621, Villeurbanne Cedex, France
| | - Flavio Capotondi
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Dario De Angelis
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Danny Fainozzi
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Laura Foglia
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Riccardo Mincigrucci
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Ettore Paltanin
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Emanuele Pedersoli
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Jacopo S Pelli-Cresi
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Filippo Bencivenga
- Elettra Sincrotrone Trieste S.c.P.A., Strada Statale 14, km 163.5, AREA Science Park, I-34149, Basovizza, Trieste, Italy
| | - Valentina M Giordano
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne cedex, France.
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Fainozzi D, Foglia L, Khatu NN, Masciovecchio C, Mincigrucci R, Paltanin E, Bencivenga F. Stimulated Brillouin Scattering in the Time Domain at 1 nm^{-1} Wave Vector. PHYSICAL REVIEW LETTERS 2024; 132:033802. [PMID: 38307074 DOI: 10.1103/physrevlett.132.033802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 11/27/2023] [Indexed: 02/04/2024]
Abstract
We used extreme ultraviolet (EUV) pulses to create transient gratings (TGs) with sub-100 nm spatial periodicity in a β-Ga_{2}O_{3} single crystal. The EUV TG launches acoustic modes parallel to the sample surface, whose dynamics were revealed via backward diffraction of a third, time-delayed, EUV pulse. In addition, the sharp penetration depth of EUV light launches acoustic modes along the surface normal with a broad wave vector spectrum. The dynamics of selected modes at a wave vector tangibly larger (≈1 nm^{-1}) than the TG one is detected in the time domain via the interference between the backward diffracted TG signal and the stimulated Brillouin backscattering of the EUV probe. While stimulated Brillouin backscattering of an optical probe was reported in previous EUV TG experiments, its extension to shorter wavelengths can be used as a contactless experimental tool for filling the gap between the wave vector range accessible by inelastic hard x-ray and thermal neutron scattering techniques, and the one accessible through Brillouin scattering of visible and UV light.
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Affiliation(s)
- Danny Fainozzi
- Elettra-Sincrotrone Trieste, SS 14 km 163,5 in AREA Science Park, 34149 Trieste, Italy
| | - Laura Foglia
- Elettra-Sincrotrone Trieste, SS 14 km 163,5 in AREA Science Park, 34149 Trieste, Italy
| | - Nupur N Khatu
- Elettra-Sincrotrone Trieste, SS 14 km 163,5 in AREA Science Park, 34149 Trieste, Italy
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Venice, Italy
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Claudio Masciovecchio
- Elettra-Sincrotrone Trieste, SS 14 km 163,5 in AREA Science Park, 34149 Trieste, Italy
| | - Riccardo Mincigrucci
- Elettra-Sincrotrone Trieste, SS 14 km 163,5 in AREA Science Park, 34149 Trieste, Italy
| | - Ettore Paltanin
- Elettra-Sincrotrone Trieste, SS 14 km 163,5 in AREA Science Park, 34149 Trieste, Italy
| | - Filippo Bencivenga
- Elettra-Sincrotrone Trieste, SS 14 km 163,5 in AREA Science Park, 34149 Trieste, Italy
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