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Li Z, Chen Y, Song A, Zhang J, Zhang R, Zhang Z, Wang X. Anisotropic phonon dynamics in Dirac semimetal PtTe 2 thin films enabled by helicity-dependent ultrafast light excitation. LIGHT, SCIENCE & APPLICATIONS 2024; 13:181. [PMID: 39090099 PMCID: PMC11294612 DOI: 10.1038/s41377-024-01540-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 07/04/2024] [Accepted: 07/17/2024] [Indexed: 08/04/2024]
Abstract
Coherent phonons have aroused considerable attention in condensed matter physics owing to their extraordinary capacity of reflecting and controlling the physical properties of matter. However, the investigation on the interaction between coherent phonons and other microscopic particles on the ultrafast timescale within topological systems continues to be an active and unresolved area. Here, we show the energy transfer of coherent optical phonons (COP) in Dirac semimetal PtTe2 thin films using ultrafast optical pump-probe spectroscopy. Specifically, the helicity-dependent light-driven anisotropic COP signals disclose their direct connection with the light-excited anisotropic spin-polarized electrons via an angular momentum transfer. Furthermore, we observe the notable decreases in the COP oscillation frequency and the decay rate with increasing temperatures due to the anharmonic phonon-phonon scattering and electron-phonon scattering in the COP dissipation process, respectively. Our work paves the way for uncovering the coherent phonons in Dirac semimetals for the potential applications in optoelectronics and opto-spintronics.
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Affiliation(s)
- Ziyang Li
- Key Laboratory of Micro and Nano Photonic Structures (MOE), School of Information Science and Technology, Fudan University, Shanghai, China
| | - Yequan Chen
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, State Key Laboratory of Spintronics Devices and Technologies, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Anke Song
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, State Key Laboratory of Spintronics Devices and Technologies, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
| | - Jinzhong Zhang
- Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai, China
| | - Rong Zhang
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, State Key Laboratory of Spintronics Devices and Technologies, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
- Department of Physics, Xiamen University, Xiamen, China
| | - Zongzhi Zhang
- Key Laboratory of Micro and Nano Photonic Structures (MOE), School of Information Science and Technology, Fudan University, Shanghai, China.
| | - Xuefeng Wang
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, State Key Laboratory of Spintronics Devices and Technologies, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China.
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Li N, Zhang C, Liang W, Jiang Y, Zhang XX, Mi Y, Luo SN. Resonance-enhanced excitation and relaxation dynamics of coherent phonons in Fe 1.14Te. Phys Chem Chem Phys 2023; 25:28941-28947. [PMID: 37855655 DOI: 10.1039/d3cp03653g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Lattice dynamics plays a significant role in manipulating the unique physical properties of materials. In this work, femtosecond transient optical spectroscopy is used to investigate the generation mechanism and relaxation dynamics of coherent phonons in Fe1.14Te-a parent compound of chalcogenide superconductors. The reflectivity time series consist of the exponential decay component due to hot carriers and damped oscillations caused by the A1g phonon vibration. The vibrational frequency and dephasing time of the A1g phonons are obtained as a function of temperature. With increasing temperature, the phonon frequency decreases and can be well described with the anharmonicity model. Dephasing time is independent of temperature, indicating that the phonon dephasing is dominated by phonon-defect scattering. The impulsive stimulated Raman scattering mechanism is responsible for the coherent phonon generation. Owing to the resonance Raman effect, the maximum photosusceptibility of the A1g phonons occurs at 1.590 eV, corresponding to an electronic transition in Fe1.14Te.
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Affiliation(s)
- Ning Li
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China.
| | - Chenhui Zhang
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Weizheng Liang
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, People's Republic of China
| | - Yaohua Jiang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China.
| | - Xi-Xiang Zhang
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Yang Mi
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China.
| | - Sheng-Nian Luo
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, People's Republic of China.
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Okeke C, Juma I, Cobarrubia A, Schottle N, Maddah H, Mortazavi M, Behura SK. Probing anharmonic phonons in WS 2 van der Waals crystal by Raman spectroscopy and machine learning. iScience 2023; 26:107174. [PMID: 37485362 PMCID: PMC10362287 DOI: 10.1016/j.isci.2023.107174] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 06/05/2023] [Accepted: 06/14/2023] [Indexed: 07/25/2023] Open
Abstract
Understanding the optothermal physics of quantum materials will enable the efficient design of next-generation photonic and superconducting circuits. Anharmonic phonon dynamics is central to strongly interacting optothermal physics. This is because the pressure of a gas of anharmonic phonons is temperature dependent. Phonon-phonon and electron-phonon quantum interactions contribute to the anharmonic phonon effect. Here we have studied the optothermal properties of physically exfoliated WS2 van der Waals crystal via temperature-dependent Raman spectroscopy and machine learning strategies. This fundamental investigation will lead to unveiling the dependence of temperature on in-plane and out-of-plane Raman shifts (Raman thermometry) of WS2 to study the thermal conductivity, hot carrier diffusion coefficient, and thermal expansion coefficient.
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Affiliation(s)
- Chisom Okeke
- Department of Mathematics and Computer Science and Department of Chemistry and Physics, University of Arkansas at Pine Bluff, 1200 N. University Drive, Pine Bluff, AR 71601, United States
| | - Isaac Juma
- Department of Mathematics and Computer Science and Department of Chemistry and Physics, University of Arkansas at Pine Bluff, 1200 N. University Drive, Pine Bluff, AR 71601, United States
| | - Antonio Cobarrubia
- Department of Physics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States
- Computational Science Research Center, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States
| | - Nicholas Schottle
- Department of Physics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States
| | - Hisham Maddah
- Department of Chemical Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
| | - Mansour Mortazavi
- Department of Mathematics and Computer Science and Department of Chemistry and Physics, University of Arkansas at Pine Bluff, 1200 N. University Drive, Pine Bluff, AR 71601, United States
| | - Sanjay K. Behura
- Department of Physics, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States
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Sun L, Wang P, Xie X, Chen X, Yu F, Li Y, Xu X, Zhao X. Pinning and Anharmonic Phonon Effect of Quasi-Free-Standing Bilayer Epitaxial Graphene on SiC. NANOMATERIALS 2022; 12:nano12030346. [PMID: 35159691 PMCID: PMC8839960 DOI: 10.3390/nano12030346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/10/2022]
Abstract
Epitaxial graphene on SiC without substrate interaction is viewed as one of the most promising two-dimensional (2D) materials in the microelectronics field. In this study, quasi-free-standing bilayer epitaxial graphene (QFSBEG) on SiC was fabricated by H2 intercalation under different time periods, and the temperature-dependent Raman spectra were recorded to evaluate the intrinsic structural difference generated by H2 time duration. The G peak thermal lineshift rates dω/dT showed that the H2 intercalation significantly weakened the pinning effect in epitaxial graphene. Furthermore, the G peak dω/dT value showed a perspicuous pinning effect disparity of QFSBEG samples. Additionally, the anharmonic phonon effect was investigated from the Raman lineshift of peaks. The physical mechanism responsible for dominating the G-mode temperature-dependent behavior among samples with different substrate coupling effects was elucidated. The phonon decay process of different samples was compared as the temperature increased. The evolution from in situ grown graphene to QFSBEG was determined. This study will expand the understanding of QFSBEG and pave a new way for its fabrication.
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Timely and atomic-resolved high-temperature mechanical investigation of ductile fracture and atomistic mechanisms of tungsten. Nat Commun 2021; 12:2218. [PMID: 33850117 PMCID: PMC8044182 DOI: 10.1038/s41467-021-22447-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 03/12/2021] [Indexed: 11/08/2022] Open
Abstract
Revealing the atomistic mechanisms for the high-temperature mechanical behavior of materials is important for optimizing their properties for service at high-temperatures and their thermomechanical processing. However, due to materials microstructure’s dynamic recovery and the absence of available in situ techniques, the high-temperature deformation behavior and atomistic mechanisms of materials are difficult to evaluate. Here, we report the development of a microelectromechanical systems-based thermomechanical testing apparatus that enables mechanical testing at temperatures reaching 1556 K inside a transmission electron microscope for in situ investigation with atomic-resolution. With this unique technique, we first uncovered that tungsten fractures at 973 K in a ductile manner via a strain-induced multi-step body-centered cubic (BCC)-to-face-centered cubic (FCC) transformation and dislocation activities within the strain-induced FCC phase. Both events reduce the stress concentration at the crack tip and retard crack propagation. Our research provides an approach for timely and atomic-resolved high-temperature mechanical investigation of materials at high-temperatures. High-temperature deformation of materials is challenging to evaluate. Here the authors develop a novel device that allows atomic resolved in situ high temperature mechanical tests inside a transmission electron microscope and reveal ductile fracture of a single crystal tungsten deformed at 973 K.
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Tristant D, Cupo A, Ling X, Meunier V. Phonon Anharmonicity in Few-Layer Black Phosphorus. ACS NANO 2019; 13:10456-10468. [PMID: 31436958 DOI: 10.1021/acsnano.9b04257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report a temperature-dependent Raman spectroscopy study of few-layer black phosphorus (BP) with varied incident polarization and sample thickness. The Raman-active modes Ag1, B2g, and Ag2 exhibit a frequency downshift, while their line width tends to increase with increasing temperature. To understand the details of these phenomena, we perform first-principles density functional theory calculations on freestanding monolayer BP. The effect of thermal expansion is included by constraining the temperature-dependent lattice constant. The study of the temperature-induced shift of the phonon frequencies is carried out using ab initio molecular dynamics simulations. The normal-mode frequencies are calculated by identifying the peak positions from the magnitude of the Fourier transform of the total velocity autocorrelation. Anharmonicity induces a frequency shift for each individual mode, and the three- and four-phonon process coefficients are extracted. These results are compared with those obtained from many-body perturbation theory, giving access to phonon lifetimes and lattice thermal conductivity. We establish that the frequency downshift is primarily due to phonon-phonon scattering while thermal expansion only contributes indirectly by renormalizing the phonon-phonon scattering. Overall, the theoretical results are in excellent agreement with experiment, thus showing that controlling phonon scattering in BP could result in better thermoelectric devices or transistors that dissipate heat more effectively when confined to the nanoscale.
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Affiliation(s)
- Damien Tristant
- Department of Physics, Applied Physics, and Astronomy , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Andrew Cupo
- Department of Physics, Applied Physics, and Astronomy , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Xi Ling
- Department of Chemistry, Division of Materials Science and Engineering, and The Photonics Center , Boston University , Boston , Massachusetts 02215 , United States
| | - Vincent Meunier
- Department of Physics, Applied Physics, and Astronomy , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
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7
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Qiao J, Liang Q, Wang S, Xiong X, Tao X, Dekorsy T. Optimized seeded Bridgman growth and temperature dependent THz optical properties of LiInS2 crystals. CrystEngComm 2019. [DOI: 10.1039/c8ce02052c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High quality and large size nonlinear optical LiInS2 (LIS) crystals were successfully grown by the optimized seeded Bridgman method.
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Affiliation(s)
- Jie Qiao
- State Key Laboratory of Crystal Materials
- Shandong University
- 250100 Jinan
- China
| | - Qijun Liang
- Qian Xuesen Laboratory of Space Technology
- China Academy of Space Technology
- 100094 Beijing
- China
- Department of Physics and Center for Applied Photonics
| | - Shanpeng Wang
- State Key Laboratory of Crystal Materials
- Shandong University
- 250100 Jinan
- China
| | - Xixi Xiong
- State Key Laboratory of Crystal Materials
- Shandong University
- 250100 Jinan
- China
| | - Xutang Tao
- State Key Laboratory of Crystal Materials
- Shandong University
- 250100 Jinan
- China
| | - Thomas Dekorsy
- Department of Physics and Center for Applied Photonics
- University of Konstanz
- D-78457 Konstanz
- Germany
- Institute for Technical Physics
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8
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Xia T, Li N, Zhang Y, Kruger MB, Murowchick J, Selloni A, Chen X. Directional heat dissipation across the interface in anatase-rutile nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2013; 5:9883-9890. [PMID: 24090213 DOI: 10.1021/am402983k] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Understanding the structures and properties of interfaces in (nano-)composites helps to reveal their important influence on reactivity and overall performance. TiO2 is a technologically important material, and anatase/rutile TiO2 composites have been shown to display enhanced photocatalytic performance over pure anatase or rutile TiO2. This has been attributed to a synergistic effect between the two phases, but the origin of this effect as well as the structure of the interface has not been established. Using Raman spectroscopy, here we provide evidence of distinct differences in the thermal properties of the anatase and rutile moieties in the composite, with anatase becoming effectively much warmer than the rutile phase under laser irradiation. With the help of first-principles calculations, we analyze the atomic structure and unique electronic properties of the composite and infer possible reasons for the directional heat dissipation across the interface.
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Affiliation(s)
- Ting Xia
- Department of Chemistry, ⊥Department of Physics and Astronomy, and ||Department of Geosciences, University of Missouri-Kansas City , Kansas City, Missouri 64110, United States
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9
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Najmaei S, Ajayan PM, Lou J. Quantitative analysis of the temperature dependency in Raman active vibrational modes of molybdenum disulfide atomic layers. NANOSCALE 2013; 5:9758-63. [PMID: 23963480 DOI: 10.1039/c3nr02567e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Raman spectroscopy is utilized to quantify the temperature dependency of the vibrational modes in molybdenum disulfide (MoS2) atomic layers. These analyses are essential for understanding the structural properties and phononic behaviors of this two-dimensional (2D) material. We quantitatively analyze the temperature dependent shifts of the Raman peak positions in the temperature range from 300 to 550 K, and find that both planar and out-of-plane characteristic modes are highly sensitive to temperature variations. This temperature dependency is linear and can be fully explained by the first-order temperature coefficient. Using a semi-quantitative model, we evaluate the contributions of the material's thermal expansion and intrinsic temperature effects to this dependency. We reveal that the dominating source of shift in the peak position of planar mode E2g(1) for samples of all thicknesses investigated is the four-phonon process. In addition to the four-phonon process, thermal expansion plays a significant role in the temperature dependency of the out-of-plane mode, A1g. The thickness dependency of the temperature coefficient for MoS2 and a drastic change in behaviors of samples from bi- to single-layered are also demonstrated. We further explore the role of defects in the thermal properties of MoS2 by examining the temperature dependency of Raman modes in CVD-grown samples.
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Affiliation(s)
- Sina Najmaei
- Department of Mechanical Engineering & Materials Science, Rice University, Houston, Texas 77005, USA.
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10
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Guo N, Zhou Z, Huang Y, Yang X, Jiang R, Ma Z, Sun CQ. Size, shape, and temperature dependence of the phonon relaxation dynamics of CdSe nanocrystals. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.09.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Qi J, Durakiewicz T, Trugman SA, Zhu JX, Riseborough PS, Baumbach R, Bauer ED, Gofryk K, Meng JQ, Joyce JJ, Taylor AJ, Prasankumar RP. Measurement of two low-temperature energy gaps in the electronic structure of antiferromagnetic USb2 using ultrafast optical spectroscopy. PHYSICAL REVIEW LETTERS 2013; 111:057402. [PMID: 23952443 DOI: 10.1103/physrevlett.111.057402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Indexed: 06/02/2023]
Abstract
Ultrafast optical spectroscopy is used to study the antiferromagnetic f-electron system USb(2). We observe the opening of two charge gaps at low temperatures (</~45 K), arising from renormalization of the electronic structure. Analysis of our data indicates that one gap is due to hybridization between localized f-electron and conduction electron bands, while band renormalization involving magnons leads to the emergence of the second gap. These experiments thus enable us to shed light on the complex electronic structure emerging at the Fermi surface in f-electron systems.
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Affiliation(s)
- J Qi
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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12
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Rybaltovskii AO, Bagratashvili VN, Ishchenko AA, Minaev NV, Kononov NN, Dorofeev SG, Krutikova AA, Ol’khov AA. Laser-induced effects in raman spectra of nanocrystalline silicon. ACTA ACUST UNITED AC 2012. [DOI: 10.1134/s1995078012040106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Tang X, Yue Y, Chen X, Wang X. Sub-wavelength temperature probing in near-field laser heating by particles. OPTICS EXPRESS 2012; 20:14152-14167. [PMID: 22714479 DOI: 10.1364/oe.20.014152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This work reports on the first time experimental investigation of temperature field inside silicon substrates under particle-induced near-field focusing at a sub-wavelength resolution. The noncontact Raman thermometry technique employing both Raman shift and full width at half maximum (FWHM) methods is employed to investigate the temperature rise in silicon beneath silica particles. Silica particles of three diameters (400, 800 and 1210 nm), each under four laser energy fluxes of 2.5 × 10(8), 3.8 ×10(8), 6.9 ×10(8) and 8.6 ×10(8) W/m(2), are used to investigate the effects of particle size and laser energy flux. The experimental results indicate that as the particle size or the laser energy flux increases, the temperature rise inside the substrate goes higher. Maximum temperature rises of 55.8 K (based on Raman FWHM method) and 29.3K (based on Raman shift method) are observed inside the silicon under particles of 1210 nm diameter with an incident laser of 8.6 × 10(8) W/m(2). The difference is largely due to the stress inside the silicon caused by the laser heating. To explore the mechanism of heating at the sub-wavelength scale, high-fidelity simulations are conducted on the enhanced electric and temperature fields. Modeling results agree with experiment qualitatively, and discussions are provided about the reasons for their discrepancy.
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Affiliation(s)
- Xiaoduan Tang
- Department of Mechanical Engineering, Iowa State University, 2010 Black Engr. Bldg., Ames, Iowa 50011, USA
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Hyun JK, Kim IS, Connell JG, Lauhon LJ. Raman concentrators in Ge nanowires with dielectric coatings. OPTICS EXPRESS 2012; 20:5127-5132. [PMID: 22418318 DOI: 10.1364/oe.20.005127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Raman spectroscopy is a powerful tool for investigating many fundamental properties of nanostructures, but extrinsic effects including background scattering and laser-induced heating can limit the analysis of intrinsic properties. A thin SiO2 dielectric coating is found to enhance the Raman signal from a single Ge nanowire by a factor of two as a result of wave interference. Consequently, the coated nanowire experiences less heating than a bare nanowire at equivalent signal intensities. The results demonstrate a simple and effective method to extend the limits of Raman analysis on single nanostructures and facilitate their characterization.
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Affiliation(s)
- Jerome K Hyun
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
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15
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Li J, Ma S, Liu X, Zhou Z, Sun CQ. ZnO Meso-Mechano-Thermo Physical Chemistry. Chem Rev 2012; 112:2833-52. [DOI: 10.1021/cr200428m] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Jianwei Li
- Institute for Quantum Engineering
and Micro-Nano Energy Technology, Key Laboratory of Low-Dimensional
Materials and Application Technologies, and Faculty of Materials and
Optoelectronics and Physics, Xiangtan University, Hunan 411105, China
| | - Shouzhi Ma
- School of Electrical, and Electronic
Engineering, Nanyang Technological University, Singapore 639798
| | - Xinjuan Liu
- Engineering
Research Center for
Nanophotonics & Advanced Instrument, Ministry of Education, Department
of Physics, East China Normal University, Shanghai, 200062 China
| | - Zhaofeng Zhou
- Institute for Quantum Engineering
and Micro-Nano Energy Technology, Key Laboratory of Low-Dimensional
Materials and Application Technologies, and Faculty of Materials and
Optoelectronics and Physics, Xiangtan University, Hunan 411105, China
| | - Chang Q Sun
- Institute for Quantum Engineering
and Micro-Nano Energy Technology, Key Laboratory of Low-Dimensional
Materials and Application Technologies, and Faculty of Materials and
Optoelectronics and Physics, Xiangtan University, Hunan 411105, China
- School of Electrical, and Electronic
Engineering, Nanyang Technological University, Singapore 639798
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16
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Li W, Jiang K, Zhang J, Chen X, Hu Z, Chen S, Sun L, Chu J. Temperature dependence of phonon modes, dielectric functions, and interband electronic transitions in Cu2ZnSnS4 semiconductor films. Phys Chem Chem Phys 2012; 14:9936-41. [DOI: 10.1039/c2cp41209h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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17
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Probing Phonons in Nonpolar Semiconducting Nanowires with Raman Spectroscopy. JOURNAL OF NANOTECHNOLOGY 2012. [DOI: 10.1155/2012/264198] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We present recent developments in Raman probe of confined optical and acoustic phonons in nonpolar semiconducting nanowires, with emphasis on Si and Ge. First, a review of the theoretical spatial correlation phenomenological model widely used to explain the downshift and asymmetric broadening to lower energies observed in the Raman profile is given. Second, we discuss the influence of local inhomogeneous laser heating and its interplay with phonon confinement on Si and Ge Raman line shape. Finally, acoustic phonon confinement, its effect on thermal conductivity, and factors that lead to phonon damping are discussed in light of their broad implications on nanodevice fabrication.
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19
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Li WS, Shen ZX, Feng ZC, Chua SJ. Raman scattering and transverse effective charge of MOCVD-grown GaN films between 78 and 870 K. SURF INTERFACE ANAL 1999. [DOI: 10.1002/(sici)1096-9918(199908)28:1<173::aid-sia601>3.0.co;2-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Haro-Poniatowski E, Escamilla-Reyes JL, Wanser KH. Anharmonic calculations of the optical-phonon lifetime for crystals with the diamond structure. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:12121-12126. [PMID: 9982840 DOI: 10.1103/physrevb.53.12121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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21
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Prokes SM, Glembocki OJ. Role of interfacial oxide-related defects in the red-light emission in porous silicon. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:2238-2241. [PMID: 10011047 DOI: 10.1103/physrevb.49.2238] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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22
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Koval S, Migoni R. Consistent anharmonic-shell-model calculation for the Raman mode in silicon. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:998-1004. [PMID: 10010403 DOI: 10.1103/physrevb.49.998] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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23
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Sui Z, Herman IP. Effect of strain on phonons in Si, Ge, and Si/Ge heterostructures. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:17938-17953. [PMID: 10008430 DOI: 10.1103/physrevb.48.17938] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Burke HH, Herman IP. Temperature dependence of Raman scattering in Ge1-xSix alloys. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:15016-15024. [PMID: 10008032 DOI: 10.1103/physrevb.48.15016] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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