Controlling coherent and incoherent spin dynamics by steering the photoinduced energy flow
We present a femtosecond spectroscopic magneto-optical investigation of the coherent and incoherent spin dynamics in the antiferromagnetic dielectric KNiF sub(3). The pathways of the photoinduced energy flow to spins were controlled by tuning the pump photon energy. In particular, we demonstrate tha...
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| Veröffentlicht in: | Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2014-02, Vol.89 (6), Article 060405 |
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| container_title | Physical review. B, Condensed matter and materials physics |
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| creator | Bossini, D. Kalashnikova, A. M. Pisarev, R. V. Rasing, Th Kimel, A. V. |
| description | We present a femtosecond spectroscopic magneto-optical investigation of the coherent and incoherent spin dynamics in the antiferromagnetic dielectric KNiF sub(3). The pathways of the photoinduced energy flow to spins were controlled by tuning the pump photon energy. In particular, we demonstrate that laser pulses, with photon energy tuned to a nearly-zero-absorption region, excite the spin system without any signatures of heating of electrons or phonons. In this regime the ultrafast excitation of coherent spin waves is followed by a gradual increase of the spin temperature solely due to decoherence of the laser-generated magnons, as revealed by our simultaneous measurement of both the transversal and the longitudinal component of the spin dynamics. |
| doi_str_mv | 10.1103/PhysRevB.89.060405 |
| format | Article |
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V.</creatorcontrib><title>Controlling coherent and incoherent spin dynamics by steering the photoinduced energy flow</title><title>Physical review. B, Condensed matter and materials physics</title><description>We present a femtosecond spectroscopic magneto-optical investigation of the coherent and incoherent spin dynamics in the antiferromagnetic dielectric KNiF sub(3). The pathways of the photoinduced energy flow to spins were controlled by tuning the pump photon energy. In particular, we demonstrate that laser pulses, with photon energy tuned to a nearly-zero-absorption region, excite the spin system without any signatures of heating of electrons or phonons. In this regime the ultrafast excitation of coherent spin waves is followed by a gradual increase of the spin temperature solely due to decoherence of the laser-generated magnons, as revealed by our simultaneous measurement of both the transversal and the longitudinal component of the spin dynamics.</description><subject>Coherence</subject><subject>Condensed matter</subject><subject>Dynamical systems</subject><subject>Energy flow</subject><subject>Excitation</subject><subject>Photons</subject><subject>Spin dynamics</subject><subject>Spin waves</subject><subject>Tuning</subject><issn>1098-0121</issn><issn>1550-235X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNo9kMtOwzAQRSMEEqXwA6y8ZJMytuM0XkLFS6oEQiAhNpYfkyYotYOdgvL3tCqwmjvSuXdxsuycwoxS4JdPzZie8et6VskZlFCAOMgmVAjIGRdvh9sMssqBMnqcnaT0AUALWbBJ9r4Ifoih61q_IjY0GNEPRHtHWv__pr71xI1er1ubiBlJGhDjrjE0SPomDKH1bmPREfQYVyOpu_B9mh3Vukt49nun2evtzcviPl8-3j0srpa5Lbgc8tKZWtiSUiykc5JRY7g0uoDCyspoLgEqU-EcDHMlE8LNDdNAqShZ7UpH-TS72O_2MXxuMA1q3SaLXac9hk1SdL6loeRyh7I9amNIKWKt-tiudRwVBbUTqf5EqkqqvUj-AzJ1aew</recordid><startdate>20140219</startdate><enddate>20140219</enddate><creator>Bossini, D.</creator><creator>Kalashnikova, A. 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B, Condensed matter and materials physics</jtitle><date>2014-02-19</date><risdate>2014</risdate><volume>89</volume><issue>6</issue><artnum>060405</artnum><issn>1098-0121</issn><eissn>1550-235X</eissn><abstract>We present a femtosecond spectroscopic magneto-optical investigation of the coherent and incoherent spin dynamics in the antiferromagnetic dielectric KNiF sub(3). The pathways of the photoinduced energy flow to spins were controlled by tuning the pump photon energy. In particular, we demonstrate that laser pulses, with photon energy tuned to a nearly-zero-absorption region, excite the spin system without any signatures of heating of electrons or phonons. In this regime the ultrafast excitation of coherent spin waves is followed by a gradual increase of the spin temperature solely due to decoherence of the laser-generated magnons, as revealed by our simultaneous measurement of both the transversal and the longitudinal component of the spin dynamics.</abstract><doi>10.1103/PhysRevB.89.060405</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | Physical review. B, Condensed matter and materials physics, 2014-02, Vol.89 (6), Article 060405 |
| issn | 1098-0121 1550-235X |
| language | eng |
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| source | American Physical Society Journals |
| subjects | Coherence Condensed matter Dynamical systems Energy flow Excitation Photons Spin dynamics Spin waves Tuning |
| title | Controlling coherent and incoherent spin dynamics by steering the photoinduced energy flow |
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