Search Results - "Abreu, Elsa"

Controlling ferroelectricity below the surface by Abreu, Elsa

“…Optical control of material properties is usually limited to the region that absorbs the light. Coupling to lattice vibrations that travel close to the speed…”
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Symmetry breaking and geometric confinement in VO2: Results from a three-dimensional infrared nano-imaging by Liu, Mengkun, Wagner, Martin, Zhang, Jingdi, McLeod, Alexander, Kittiwatanakul, Salinporn, Fei, Zhe, Abreu, Elsa, Goldflam, Michael, Sternbach, Aaron J., Dai, Siyuan, West, Kevin G., Lu, Jiwei, Wolf, Stuart A., Averitt, Richard D., Basov, D. N.

“…Epitaxial strain can play an important role in controlling the local phase dynamics of transition metal oxides. With scattering-type scanning near-field…”
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Non-equilibrium dynamics of spin-lattice coupling by Ueda, Hiroki, Mankowsky, Roman, Paris, Eugenio, Sander, Mathias, Deng, Yunpei, Liu, Biaolong, Leroy, Ludmila, Nag, Abhishek, Skoropata, Elizabeth, Wang, Chennan, Ukleev, Victor, Perren, Gérard Sylvester, Dössegger, Janine, Gurung, Sabina, Svetina, Cristian, Abreu, Elsa, Savoini, Matteo, Kimura, Tsuyoshi, Patthey, Luc, Razzoli, Elia, Lemke, Henrik Till, Johnson, Steven Lee, Staub, Urs

“…Quantifying the dynamics of normal modes and how they interact with other excitations is of central importance in condensed matter. Spin-lattice coupling is…”
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Orbital dynamics during an ultrafast insulator to metal transition by Parchenko, Sergii, Paris, Eugenio, McNally, Daniel, Abreu, Elsa, Dantz, Markus, Bothschafter, Elisabeth M., Reid, Alexander H., Schlotter, William F., Lin, Ming-Fu, Wandel, Scott F., Coslovich, Giacomo, Zohar, Sioan, Dakovski, Georgi L., Turner, J. J., Moeller, S., Tseng, Yi, Radovic, Milan, Saathe, Conny, Agaaker, Marcus, Nordgren, Joseph E., Johnson, Steven L., Schmitt, Thorsten, Staub, Urs

“…We present ultrafast resonant inelastic x-ray scattering (RIXS) experiments performed at the vanadium L edge to track changes in the electronic structure of…”
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Strong modulation of carrier effective mass in WTe2 via coherent lattice manipulation by Soranzio, Davide, Savoini, Matteo, Beaud, Paul, Cilento, Federico, Boie, Larissa, Dössegger, Janine, Ovuka, Vladimir, Houver, Sarah, Sander, Mathias, Zerdane, Serhane, Abreu, Elsa, Deng, Yunpei, Mankowsky, Roman, Lemke, Henrik T., Parmigiani, Fulvio, Peressi, Maria, Johnson, Steven L.

“…The layered transition-metal dichalcogenide WTe 2 is characterized by distinctive transport and topological properties. These properties are largely determined…”
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Kinetics of a Phonon-Mediated Laser-Driven Structural Phase Transition in Sn2P2Se6 by Kubli, Martin, Savoini, Matteo, Abreu, Elsa, Burganov, Bulat, Lantz, Gabriel, Huber, Lucas, Neugebauer, Martin, Boie, Larissa, Esposito, Vincent, Bothschafter, Elisabeth, Parchenko, Sergii, Grübel, Sebastian, Porer, Michael, Rittmann, Jochen, Beaud, Paul, Staub, Urs, Yabashi, Makina, Tanaka, Yoshikazu, Katayama, Tetsuo, Togashi, Tadashi, Kohutych, Anton, Vysochanskii, Yulian, Johnson, Steven

“…We investigate the structural dynamics of the incommensurately modulated phase of Sn 2P 2Se 6 by means of time-resolved X-ray diffraction following excitation…”
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Solid-state biased coherent detection of ultra-broadband terahertz pulses generated in a spintronic emitter for high repetition rate, low pulse energy lasers by Suter, Tim, Tomasino, Alessandro, Savoini, Matteo, Houver, Sarah, Morandotti, Roberto, Johnson, Steven L, Abreu, Elsa

“…We report the coherent generation and detection of terahertz (THz) pulses featuring a spectral bandwidth in the range of 0.1-9 THz achieved via the use of a…”
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THz Generation and Detection by Fluorenone Based Organic Crystals by Savoini, Matteo, Huber, Lucas, Cuppen, Herma, Abreu, Elsa, Kubli, Martin, Neugebauer, Martin J, Duan, Yulong, Beaud, Paul, Xu, Jialiang, Rasing, Theo, Johnson, Steven L

“…Direct study and control of material properties using terahertz (THz) frequency pulses is an emerging subject with strong potential for future applications…”
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THz spectroscopy of VO 2 epitaxial films: controlling the anisotropic properties through strain engineering by Abreu, Elsa, Liu, Mengkun, Lu, Jiwei, West, Kevin G, Kittiwatanakul, Salinporn, Yin, Wenjing, Wolf, Stuart A, Averitt, Richard D

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THz spectroscopy of VO2 epitaxial films: controlling the anisotropic properties through strain engineering by Abreu, Elsa, Liu, Mengkun, Lu, Jiwei, West, Kevin G, Kittiwatanakul, Salinporn, Yin, Wenjing, Wolf, Stuart A, Averitt, Richard D

“…We use THz time-domain spectroscopy to investigate the far-infrared properties of vanadium dioxide thin films, strain-engineered through epitaxial growth on…”
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Comparison of coherent phonon generation by electronic and ionic Raman scattering in LaAlO_{3} by Martin J. Neugebauer, Dominik M. Juraschek, Matteo Savoini, Pascal Engeler, Larissa Boie, Elsa Abreu, Nicola A. Spaldin, Steven L. Johnson

“…In ionic Raman scattering, infrared-active phonons mediate a scattering process that results in the creation or destruction of a Raman-active phonon. This…”
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Comparison of coherent phonon generation by electronic and ionic Raman scattering in LaAlO 3 by Neugebauer, Martin J., Juraschek, Dominik M., Savoini, Matteo, Engeler, Pascal, Boie, Larissa, Abreu, Elsa, Spaldin, Nicola A., Johnson, Steven L.

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Relatório de Estágio Pedagógico Desenvolvido na Escola Básica 2º e 3º Ciclos Dr.ª Mª Alice Gouveia Junto da Turma do 8ºa no ano Letivo 2019/2020 – O Efeito da Aplicação Regular de Circuitos de Treino Funcional na Condição Física dos Alunos do 8º ano by Abreu, Elsa Dias

“…O presente relatório de estágio resultou de todo o trabalho desenvolvido ao longo da unidade curricular Estágio Pedagógico. Assim, nele constam, de forma…”
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Impact ionization in low-band-gap semiconductors driven by ultrafast THz excitation: beyond the ballistic regime by Biasco, Simone, Burri, Florence, Houver, Sarah, Abreu, Elsa, Savoini, Matteo, Johnson, Steven L

“…Using two-dimensional THz spectroscopy in combination with numerical models, we investigate the dynamics linked to carrier multiplication caused by high-field…”
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Roles of band gap and Kane electronic dispersion in the THz-frequency nonlinear optical response in HgCdTe by Soranzio, Davide, Abreu, Elsa, Houver, Sarah, Dössegger, Janine, Savoini, Matteo, Teppe, Frédéric, Krishtopenko, Sergey, Mikhailov, Nikolay N, Dvoretsky, Sergey A, Johnson, Steven L

“…Materials with linear electronic dispersion often feature high carrier mobilities and unusually strong nonlinear optical interactions. In this work, we…”
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Octahedral and polar phase transitions in freestanding films of SrTiO3 by Leroy, Ludmila, Huang, Shih-Wen, Chiu, Chun-Chien, Ho, Sheng-Zhu, Dössegger, Janine, Piamonteze, Cinthia, Abreu, Elsa, Bombardi, Alessandro, Yang, Jan-Chi, Staub, Urs

“…From extreme strain to bending, the possibilities in the manipulation of freestanding films of oxide perovskites bring a novel landscape to their properties…”
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Solid-State Biased Coherent Detection of Ultra-Broadband Terahertz Pulses for high repetition rate, low pulse energy lasers by Suter, Tim, Tomasino, Alessandro, Savoini, Matteo, Houver, Sarah, Johnson, Steven L, Abreu, Elsa

“…We report the coherent generation and detection of terahertz (THz) pulses covering the bandwidth of 0.1-9 THz in a high repetition rate, low pulse energy laser…”
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THz-induced carrier multiplication in TaAs Weyl semimetal by Houver, Sarah, Soranzio, Davide, Biasco, Simone, Shekhar, Chandra, Felser, Claudia, Abreu, Elsa, Savoini, Matteo, Johnson, Steven Lee

“…Topological Dirac and Weyl semimetals (D&W SM) have attracted a lot of attention due to their unusual electronic properties, which are strongly dependent on…”
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Electronic and structural dynamics of vanadates and nickelates: Effect of temperature, strain and photoexcitation by Abreu, Elsa Caroline Souto Goncalves de

“…The scientific relevance and potential for technological applications of complex materials have made them the focus of active investigation in order to fully…”
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Dynamic conductivity scaling in photoexcited V 2 O 3 thin films by Abreu, Elsa, Wang, Siming, Ramírez, Juan Gabriel, Liu, Mengkun, Zhang, Jingdi, Geng, Kun, Schuller, Ivan K., Averitt, Richard D.

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