Surface-acoustic-wave-driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers
Surface acoustic waves (SAW) were generated on a thin layer of the ferromagnetic semiconductor (Ga,Mn)(As,P). The out-of-plane uniaxial magnetic anisotropy of this dilute magnetic semiconductor is very sensitive to the strain of the layer, making it an ideal test material for the dynamic control of...
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| Veröffentlicht in: | Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2014-09, Vol.90 (9), Article 094401 |
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| container_title | Physical review. B, Condensed matter and materials physics |
| container_volume | 90 |
| creator | Thevenard, L. Gourdon, C. Prieur, J. Y. von Bardeleben, H. J. Vincent, S. Becerra, L. Largeau, L. Duquesne, J.-Y. |
| description | Surface acoustic waves (SAW) were generated on a thin layer of the ferromagnetic semiconductor (Ga,Mn)(As,P). The out-of-plane uniaxial magnetic anisotropy of this dilute magnetic semiconductor is very sensitive to the strain of the layer, making it an ideal test material for the dynamic control of magnetization via magnetostriction. The amplitude and phase of the transmitted SAW during magnetic field sweeps showed a clear resonant behavior at a field close to the one calculated to give a precession frequency equal to the SAW frequency. A resonance was observed from 5 to 85 K, just below the Curie temperature of the layer. A full analytical treatment of the coupled magnetization/acoustic dynamics showed that the magnetostrictive coupling modifies the elastic constants of the material and accordingly the wave-vector solution to the elastic wave equation. The shape and position of the resonance were well reproduced by the calculations, in particular the fact that velocity (phase) variations resonated at lower fields than the acoustic attenuation variations. We suggest one reinterpret SAW-driven ferromagnetic resonance as a form of resonant, dynamic, delta-E effect, a concept usually reserved for static magnetoelastic phenomena. |
| doi_str_mv | 10.1103/PhysRevB.90.094401 |
| format | Article |
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Y. ; von Bardeleben, H. J. ; Vincent, S. ; Becerra, L. ; Largeau, L. ; Duquesne, J.-Y.</creator><creatorcontrib>Thevenard, L. ; Gourdon, C. ; Prieur, J. Y. ; von Bardeleben, H. J. ; Vincent, S. ; Becerra, L. ; Largeau, L. ; Duquesne, J.-Y.</creatorcontrib><description>Surface acoustic waves (SAW) were generated on a thin layer of the ferromagnetic semiconductor (Ga,Mn)(As,P). The out-of-plane uniaxial magnetic anisotropy of this dilute magnetic semiconductor is very sensitive to the strain of the layer, making it an ideal test material for the dynamic control of magnetization via magnetostriction. The amplitude and phase of the transmitted SAW during magnetic field sweeps showed a clear resonant behavior at a field close to the one calculated to give a precession frequency equal to the SAW frequency. A resonance was observed from 5 to 85 K, just below the Curie temperature of the layer. A full analytical treatment of the coupled magnetization/acoustic dynamics showed that the magnetostrictive coupling modifies the elastic constants of the material and accordingly the wave-vector solution to the elastic wave equation. The shape and position of the resonance were well reproduced by the calculations, in particular the fact that velocity (phase) variations resonated at lower fields than the acoustic attenuation variations. We suggest one reinterpret SAW-driven ferromagnetic resonance as a form of resonant, dynamic, delta-E effect, a concept usually reserved for static magnetoelastic phenomena.</description><identifier>ISSN: 1098-0121</identifier><identifier>EISSN: 1550-235X</identifier><identifier>DOI: 10.1103/PhysRevB.90.094401</identifier><language>eng</language><publisher>American Physical Society</publisher><subject>Condensed Matter ; Dynamics ; Ferromagnetic resonance ; Joining ; Magnetization ; Mathematical analysis ; Other ; Physics ; Semiconductors ; Surface acoustic waves</subject><ispartof>Physical review. 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A resonance was observed from 5 to 85 K, just below the Curie temperature of the layer. A full analytical treatment of the coupled magnetization/acoustic dynamics showed that the magnetostrictive coupling modifies the elastic constants of the material and accordingly the wave-vector solution to the elastic wave equation. The shape and position of the resonance were well reproduced by the calculations, in particular the fact that velocity (phase) variations resonated at lower fields than the acoustic attenuation variations. We suggest one reinterpret SAW-driven ferromagnetic resonance as a form of resonant, dynamic, delta-E effect, a concept usually reserved for static magnetoelastic phenomena.</description><subject>Condensed Matter</subject><subject>Dynamics</subject><subject>Ferromagnetic resonance</subject><subject>Joining</subject><subject>Magnetization</subject><subject>Mathematical analysis</subject><subject>Other</subject><subject>Physics</subject><subject>Semiconductors</subject><subject>Surface acoustic waves</subject><issn>1098-0121</issn><issn>1550-235X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNo9kE1Lw0AQhhdRsFb_gKccW3DrbLLJZo-1aCtUWvwAb8tkM7GRNKm7baT_3pSqpxnmfXhhHsauBYyEgOh2udr7Z2rvRhpGoKUEccJ6Io6Bh1H8ftrtoFMOIhTn7ML7TwAhtQx7bPGycwVa4mibnd-Wln9jSzx3ZUt1UJBzzRo_auqSwJFvaqwtBWUdDKZ481QPB2N_sxwGtCkr3JPzl-yswMrT1e_ss7eH-9fJjM8X08fJeM6tVNGWhxlYUnmeCoAkRY2ZxVQlpDKZUJgUBUqVh0JHmYhR2DzPFFkqbEgqtV0W9dnw2LvCymxcuUa3Nw2WZjaem8MNRBSrRCWt6NjBkd245mtHfmvWpbdUVVhT97QRCrSSkCayQ8Mjal3jvaPiv1uAOZg2f6aNBnM0Hf0ArRJzGA</recordid><startdate>20140902</startdate><enddate>20140902</enddate><creator>Thevenard, L.</creator><creator>Gourdon, C.</creator><creator>Prieur, J. 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The amplitude and phase of the transmitted SAW during magnetic field sweeps showed a clear resonant behavior at a field close to the one calculated to give a precession frequency equal to the SAW frequency. A resonance was observed from 5 to 85 K, just below the Curie temperature of the layer. A full analytical treatment of the coupled magnetization/acoustic dynamics showed that the magnetostrictive coupling modifies the elastic constants of the material and accordingly the wave-vector solution to the elastic wave equation. The shape and position of the resonance were well reproduced by the calculations, in particular the fact that velocity (phase) variations resonated at lower fields than the acoustic attenuation variations. 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| language | eng |
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| source | American Physical Society Journals |
| subjects | Condensed Matter Dynamics Ferromagnetic resonance Joining Magnetization Mathematical analysis Other Physics Semiconductors Surface acoustic waves |
| title | Surface-acoustic-wave-driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers |
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