Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Igor, Ilyakov"'
Autor:
Thomas W. J. Metzger, Kirill A. Grishunin, Chris Reinhoffer, Roman M. Dubrovin, Atiqa Arshad, Igor Ilyakov, Thales V. A. G. de Oliveira, Alexey Ponomaryov, Jan-Christoph Deinert, Sergey Kovalev, Roman V. Pisarev, Mikhail I. Katsnelson, Boris A. Ivanov, Paul H. M. van Loosdrecht, Alexey V. Kimel, Evgeny A. Mashkovich
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)
Abstract Understanding spin-lattice interactions in antiferromagnets is a critical element of the fields of antiferromagnetic spintronics and magnonics. Recently, coherent nonlinear phonon dynamics mediated by a magnon state were discovered in an ant
Externí odkaz:
https://doaj.org/article/a0e409469c954d7fa52b3ee15f5452aa
Autor:
Igor Ilyakov, Arne Brataas, Thales V. A. G. de Oliveira, Alexey Ponomaryov, Jan-Christoph Deinert, Olav Hellwig, Jürgen Faßbender, Jürgen Lindner, Ruslan Salikhov, Sergey Kovalev
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Efficient generation and control of spin currents launched by terahertz (THz) radiation with subsequent ultrafast spin-to-charge conversion is the current challenge for the next generation of high-speed communication and data processing unit
Externí odkaz:
https://doaj.org/article/54c58cd666714896b62bb8b3aee5c93e
Autor:
Hao Chu, Sergey Kovalev, Zi Xiao Wang, Lukas Schwarz, Tao Dong, Liwen Feng, Rafael Haenel, Min-Jae Kim, Parmida Shabestari, Le Phuong Hoang, Kedar Honasoge, Robert David Dawson, Daniel Putzky, Gideok Kim, Matteo Puviani, Min Chen, Nilesh Awari, Alexey N. Ponomaryov, Igor Ilyakov, Martin Bluschke, Fabio Boschini, Marta Zonno, Sergey Zhdanovich, Mengxing Na, Georg Christiani, Gennady Logvenov, David J. Jones, Andrea Damascelli, Matteo Minola, Bernhard Keimer, Dirk Manske, Nanlin Wang, Jan-Christoph Deinert, Stefan Kaiser
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Cuprate superconductors are known for their intertwined interactions and coexistence of competing orders. Here, the authors observe a Fano resonance in the nonlinear THz response of La2-xSrxCuO4, which may arise from a coupling between superconductin
Externí odkaz:
https://doaj.org/article/b4f04f7813554566b2a23916cd9d0839
Autor:
Klaas-Jan Tielrooij, Alessandro Principi, David Saleta Reig, Alexander Block, Sebin Varghese, Steffen Schreyeck, Karl Brunner, Grzegorz Karczewski, Igor Ilyakov, Oleksiy Ponomaryov, Thales V. A. G. de Oliveira, Min Chen, Jan-Christoph Deinert, Carmen Gomez Carbonell, Sergio O. Valenzuela, Laurens W. Molenkamp, Tobias Kiessling, Georgy V. Astakhov, Sergey Kovalev
Publikováno v:
Light: Science & Applications, Vol 11, Iss 1, Pp 1-8 (2022)
Topological insulator metamaterials bring nonlinear terahertz photonic technology a step closer by producing a third-harmonic output power close to a milliwatt.
Externí odkaz:
https://doaj.org/article/a24cec4bd7fe47398e703ba2e8a095d2
Autor:
Atiqa Arshad, Hatice Nur Koyun, Ruslan Salikhov, Michael Gensch, Igor Ilyakov, Alexey Ponomaryov, Gulloo Lal Prajapati, Thales V. A. G. de Oliveira, Kalliopi Mavridou, Jürgen Lindner, Jan-Christoph Deinert, Cumhur Gökhan Ünlü, Sergey Kovalev
Publikováno v:
Advanced Photonics Research, Vol 4, Iss 7, Pp n/a-n/a (2023)
The third harmonic generation (THG) of graphite layers on paper substrate upon excitation with intense (up to 100 kV cm−1) narrowband terahertz (THz) pulses is studied. Highest THG efficiencies are comparable with those of chemical vapor deposition
Externí odkaz:
https://doaj.org/article/2e16917cb4a843838f29877a738305ce
Autor:
Fanqi Meng, Frederik Walla, Sergey Kovalev, Jan-Christoph Deinert, Igor Ilyakov, Min Chen, Alexey Ponomaryov, Sergey G. Pavlov, Heinz-Wilhelm Hübers, Nikolay V. Abrosimov, Christoph Jungemann, Hartmut G. Roskos, Mark D. Thomson
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043141 (2023)
We investigate ultrafast harmonic generation (HG) in Si:B, driven by intense pump pulses with fields reaching ∼100kVcm^{−1} and a carrier frequency of 300 GHz, at 4 K and 300 K, both experimentally and theoretically. We report several findings co
Externí odkaz:
https://doaj.org/article/97e7faecbcdf42079d00a04964207721
Autor:
Sergey Kovalev, Renato M. A. Dantas, Semyon Germanskiy, Jan-Christoph Deinert, Bertram Green, Igor Ilyakov, Nilesh Awari, Min Chen, Mohammed Bawatna, Jiwei Ling, Faxian Xiu, Paul H. M. van Loosdrecht, Piotr Surówka, Takashi Oka, Zhe Wang
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
The mechanism and scaling of high harmonic generation in solids is a highly compelling ongoing area of research. Here the authors show a non-perturbative behavior of HHG in terahertz regime from 3D Dirac semimetal, Cd3As2, at room temperature, and re
Externí odkaz:
https://doaj.org/article/d6a3b0fda6c44f75aa9905d90ca99a4f
Autor:
Hao Chu, Min-Jae Kim, Kota Katsumi, Sergey Kovalev, Robert David Dawson, Lukas Schwarz, Naotaka Yoshikawa, Gideok Kim, Daniel Putzky, Zhi Zhong Li, Hélène Raffy, Semyon Germanskiy, Jan-Christoph Deinert, Nilesh Awari, Igor Ilyakov, Bertram Green, Min Chen, Mohammed Bawatna, Georg Cristiani, Gennady Logvenov, Yann Gallais, Alexander V. Boris, Bernhard Keimer, Andreas P. Schnyder, Dirk Manske, Michael Gensch, Zhe Wang, Ryo Shimano, Stefan Kaiser
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Interaction between Cooper pairs and other collective excitations may reveal important information about the pairing mechanism. Here, the authors observe a universal jump in the phase of the driven Higgs oscillations in cuprate thin films, indicating
Externí odkaz:
https://doaj.org/article/2a2f151c6c604b829dec60523bbf4157
This paper considers the nanostructuring of the surface of dielectrics under the effect of two successive femtosecond laser pulses, one of the fundamental frequency (FF) and the other of the second harmonic (SH) of a Ti:sapphire laser, through a laye
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03122d869af2bb49b7eebd00c1652955
https://doi.org/10.1364/opticaopen.21967844.v1
https://doi.org/10.1364/opticaopen.21967844.v1
Autor:
Ruslan Salikhov, Igor Ilyakov, Lukas Körber, Attila Kákay, Rodolfo A. Gallardo, Alexey Ponomaryov, Jan-Christoph Deinert, Thales V. A. G. de Oliveira, Kilian Lenz, Jürgen Fassbender, Stefano Bonetti, Olav Hellwig, Jürgen Lindner, Sergey Kovalev
Publikováno v:
Nature Physics 13(2023), 529-535
Spin-based technologies can operate at terahertz frequencies but require manipulation techniques that work at ultrafast timescales to become practical. For instance, devices based on spin waves, also known as magnons, require efficient generation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d56a46cd425ee65b96aae0f2f9318e96
https://www.hzdr.de/publications/Publ-35382-1
https://www.hzdr.de/publications/Publ-35382-1