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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202305622
|2 doi
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|a eng
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|a Yordanov, Petar
|e verfasserin
|4 aut
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| 245 |
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|a Generation of Terahertz Radiation via the Transverse Thermoelectric Effect
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|c 2023
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 20.10.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Terahertz (THz) radiation is a powerful tool with widespread applications ranging from imaging, sensing, and broadband communications to spectroscopy and nonlinear control of materials. Future progress in THz technology depends on the development of efficient, structurally simple THz emitters that can be implemented in advanced miniaturized devices. Here, it is shown how the natural electronic anisotropy of layered conducting transition metal oxides enables the generation of intense terahertz radiation via the transverse thermoelectric effect. In thin films grown on off-cut substrates, femtosecond laser pulses generate ultrafast out-of-plane temperature gradients, which in turn launch in-plane thermoelectric currents, thus allowing efficient emission of the resulting THz field out of the film structure. This scheme is demonstrated in experiments on thin films of the layered metals PdCoO2 and La1.84 Sr0.16 CuO4 , and model calculations that elucidate the influence of the material parameters on the intensity and spectral characteristics of the emitted THz field are presented. Due to its simplicity, the method opens up a promising avenue for the development of highly versatile THz sources and integrable emitter elements
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|a Journal Article
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|a THz emission spectroscopy
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|a layered conducting transition metal oxides
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4 |
|a off-cut thin films
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4 |
|a terahertz generation
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| 650 |
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|a transverse thermoelectric effect
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1 |
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|a Priessnitz, Tim
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Min-Jae
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cristiani, Georg
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Logvenov, Gennady
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Keimer, Bernhard
|e verfasserin
|4 aut
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| 700 |
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|a Kaiser, Stefan
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 41 vom: 22. Okt., Seite e2305622
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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|g volume:35
|g year:2023
|g number:41
|g day:22
|g month:10
|g pages:e2305622
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|u http://dx.doi.org/10.1002/adma.202305622
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