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Coloquio Extraordinario Prof. Alexandre Dmitriev | University of Gothenburg, Sweden
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"Optical nanoantennas for magnetophotonics and beyond"
Prof. Alexandre Dmitriev
Department of Physics, University of Gothenburg, Sweden
Nanoscale magnetophotonics unites the concepts from magnetism (switching, storage, steering) with light (energy, information, photochemistry) at the nanoscale [1]. Our own exploration of this merger started some 10 years ago by conceiving nanoscale optical and magnetic antennas with magneto-optical properties dependent on cal resonances [2]. This was boosted by bottom-up nanofabrication we developed early on [3]. Today I highlight our recent work, were we employ plasmon nanoantennas to either funnel electromagnetic energy into ferrimagnetic films at the nanoscale assisting the
demagnetization [3], or construct hybrid plasmon-ferrimagnet nanoantennas for that [4]. The produced architectures could also serve as the conceptually new high-resolution light incidence direction sensors or a platform with multistate demagnetization, potentially opening for nanomagnetic neuromorphic-like ultrafast systems. We also show how adding nanoplasmonics allows to ’see’ single molecule magnets with spectroscopy at ambient conditions [5]. I will discuss a very intriguing prospect of ‘spilling’ materials properties (like electronic interband transition) outside the actual material by strongly coupling electronic and optical resonances in ferromagnetic Ni [6]. Finally, couple of very recent examples of employing optical and magnetic nanoantennas – looking into chemical matter strongly coupled to nanoantennas [7] and proposing a new type of matter – magnetoelectic (Tellegen) materials at optical frequencies [8].
Video transmitido en vivo desde el Auditorio del Instituto de Ciencias Físicas, Cuernavaca, Morelos, México.
Prof. Alexandre Dmitriev
Department of Physics, University of Gothenburg, Sweden
Nanoscale magnetophotonics unites the concepts from magnetism (switching, storage, steering) with light (energy, information, photochemistry) at the nanoscale [1]. Our own exploration of this merger started some 10 years ago by conceiving nanoscale optical and magnetic antennas with magneto-optical properties dependent on cal resonances [2]. This was boosted by bottom-up nanofabrication we developed early on [3]. Today I highlight our recent work, were we employ plasmon nanoantennas to either funnel electromagnetic energy into ferrimagnetic films at the nanoscale assisting the
demagnetization [3], or construct hybrid plasmon-ferrimagnet nanoantennas for that [4]. The produced architectures could also serve as the conceptually new high-resolution light incidence direction sensors or a platform with multistate demagnetization, potentially opening for nanomagnetic neuromorphic-like ultrafast systems. We also show how adding nanoplasmonics allows to ’see’ single molecule magnets with spectroscopy at ambient conditions [5]. I will discuss a very intriguing prospect of ‘spilling’ materials properties (like electronic interband transition) outside the actual material by strongly coupling electronic and optical resonances in ferromagnetic Ni [6]. Finally, couple of very recent examples of employing optical and magnetic nanoantennas – looking into chemical matter strongly coupled to nanoantennas [7] and proposing a new type of matter – magnetoelectic (Tellegen) materials at optical frequencies [8].
Video transmitido en vivo desde el Auditorio del Instituto de Ciencias Físicas, Cuernavaca, Morelos, México.