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Generation mechanis...
Generation mechanism of terahertz coherent acoustic phonons in Fe
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- Henighan, T. (author)
- SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA.;Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
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- Trigo, M. (author)
- SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA.;SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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- Bonetti, S. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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- Granitzka, P. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.;Univ Amsterdam, Van der Waals Zeeman Inst, Kruislaan 403, NL-1018 XE Amsterdam, Netherlands.
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- Higley, D. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.;Stanford Univ, Dept Photon Sci, Stanford, CA 94305 USA.;Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.;SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Chen, Z. (author)
- Stanford Univ, Dept Phys, Stanford, CA 94305 USA.;SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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- Jiang, M. P. (author)
- SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA.;Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
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- Kukreja, R. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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- Gray, A. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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- Reid, A. H. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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- Jal, E. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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- Hoffmann, C. (author)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Kozina, M. (author)
- SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA.;SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Song, S. (author)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Chollet, M. (author)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Zhu, D. (author)
- SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA.
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- Xu, P. F. (author)
- IBM Almaden Res Ctr, 650 Harry Rd, San Jose, CA 95120 USA.;Max Planck Inst Microstruct Phys, D-06120 Halle, Saale, Germany.
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- Jeong, J. (author)
- IBM Almaden Res Ctr, 650 Harry Rd, San Jose, CA 95120 USA.
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- Carva, K. (author)
- Uppsala universitet,Materialteori,Charles Univ Prague, Dept Condensed Matter Phys, Fac Math & Phys, Ke Karlovu 5, CZ-12116 Prague 2, Czech Republic.
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- Maldonado, Pablo (author)
- Uppsala universitet,Materialteori
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- Oppeneer, Peter M. (author)
- Uppsala universitet,Materialteori
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- Samant, M. G. (author)
- IBM Almaden Res Ctr, 650 Harry Rd, San Jose, CA 95120 USA.
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- Parkin, S. S. P. (author)
- IBM Almaden Res Ctr, 650 Harry Rd, San Jose, CA 95120 USA.;Max Planck Inst Microstruct Phys, D-06120 Halle, Saale, Germany.
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- Reis, D. A. (author)
- SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA.;SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.;Stanford Univ, Dept Photon Sci, Stanford, CA 94305 USA.;Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
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- Durr, H. A. (author)
- SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
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SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA;Stanford Univ, Dept Phys, Stanford, CA 94305 USA. SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA.;SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. (creator_code:org_t)
- 2016
- 2016
- English.
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In: PHYSICAL REVIEW B. - 2469-9950. ; 93:22
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We use femtosecond time-resolved hard x-ray scattering to detect coherent acoustic phonons generated during ultrafast laser excitation of ferromagnetic bcc Fe films grown on MgO(001). We observe the coherent longitudinal-acoustic phonons as a function of wave vector through analysis of the temporal oscillations in the x-ray scattering signal. The width of the extracted strain wave front associated with this coherent motion is similar to 100 fs. An effective electronic Gruneisen parameter is extracted within a two-temperature model. However, ab initio calculations show that the phonons are nonthermal on the time scale of the experiment, which calls into question the validity of extracting physical constants by fitting such a two-temperature model.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Henighan, T.
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Trigo, M.
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Bonetti, S.
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Granitzka, P.
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Higley, D.
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Chen, Z.
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Jiang, M. P.
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Kukreja, R.
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Gray, A.
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Reid, A. H.
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Jal, E.
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Hoffmann, C.
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Kozina, M.
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Song, S.
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Chollet, M.
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Zhu, D.
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Xu, P. F.
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Jeong, J.
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Carva, K.
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Maldonado, Pablo
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Oppeneer, Peter ...
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Samant, M. G.
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Parkin, S. S. P.
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Reis, D. A.
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Durr, H. A.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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PHYSICAL REVIEW ...
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Uppsala University