Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Martin Mittendorff"'
Autor:
Jeong Woo Han, Pavlo Sai, Dmytro B. But, Ece Uykur, Stephan Winnerl, Gagan Kumar, Matthew L. Chin, Rachael L. Myers-Ward, Matthew T. Dejarld, Kevin M. Daniels, Thomas E. Murphy, Wojciech Knap, Martin Mittendorff
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Abstract Strong circularly polarized excitation opens up the possibility to generate and control effective magnetic fields in solid state systems, e.g., via the optical inverse Faraday effect or the phonon inverse Faraday effect. While these effects
Externí odkaz:
https://doaj.org/article/02af78d1966f468f9a78bedfaa5ee21d
Autor:
Jeong Woo Han, Matthew L. Chin, Sebastian Matschy, Jayaprakash Poojali, Angelika Seidl, Stephan Winnerl, Hassan A. Hafez, Dmitry Turchinovich, Gagan Kumar, Rachael L. Myers-Ward, Matthew T. Dejarld, Kevin M. Daniels, Howard Dennis Drew, Thomas E. Murphy, Martin Mittendorff
Publikováno v:
Advanced Photonics Research, Vol 3, Iss 2, Pp n/a-n/a (2022)
The discovery of graphene and its unique optical and electronic properties has triggered intense developments in a vast number of optoelectronic applications, especially in spectral regions that are not easily accessible with conventional semiconduct
Externí odkaz:
https://doaj.org/article/c5ebf9ca77004b8eb3c7a5e615d8c85b
Autor:
Torben Winzer, Martin Mittendorff, Stephan Winnerl, Henry Mittenzwey, Roland Jago, Manfred Helm, Ermin Malic, Andreas Knorr
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
Saturable absorption, a technologically relevant property of graphene, is usually explained with Pauli blocking of optically driven carriers in the strong-excitation regime. Here, Winzeret al. reveal a new saturation regime at low excitations, result
Externí odkaz:
https://doaj.org/article/f77cd51ef2f2429eb842d108ee2f67bf
Publikováno v:
APL Photonics, Vol 4, Iss 3, Pp 034502-034502-6 (2019)
Black phosphorus possesses several attractive properties for optoelectronics, notably a direct and layer dependent bandgap that varies from the visible to mid-infrared and the ability to transfer the material to nearly arbitrary substrates. A less ut
Externí odkaz:
https://doaj.org/article/21f94cd08d744bb38b3ee1d152f289f2
Autor:
Alvydas Lisauskas, Kęstutis Ikamas, Sylvain Massabeau, Maris Bauer, Dovilė Čibiraitė, Jonas Matukas, Juliette Mangeney, Martin Mittendorff, Stephan Winnerl, Viktor Krozer, Hartmut G. Roskos
Publikováno v:
APL Photonics, Vol 3, Iss 5, Pp 051705-051705-8 (2018)
We propose to exploit rectification in field-effect transistors as an electrically controllable higher-order nonlinear phenomenon for the convenient monitoring of the temporal characteristics of THz pulses, for example, by autocorrelation measurement
Externí odkaz:
https://doaj.org/article/22498ef0d749412dab91ce4e913f9795
Autor:
Martin Mittendorff, Milan Orlita, Marek Potemski, Claire Berger, Walter A de Heer, Harald Schneider, Manfred Helm, Stephan Winnerl
Publikováno v:
New Journal of Physics, Vol 16, Iss 12, p 123021 (2014)
We investigate the low-energy carrier dynamics in Landau quantized multilayer epitaxial graphene on $(000\bar{1})$ SiC, using 14 meV photons. The THz absorption is dominated by Landau-level transitions within the conduction bands of several graphene
Externí odkaz:
https://doaj.org/article/c135f5b4c52449d5be549698e00b9bc0
Autor:
Sepideh Izadi, Ahana Bhattacharya, Sarah Salloum, Jeong Woo Han, Lauritz Schnatmann, Ulrike Wolff, Nicolas Perez, Georg Bendt, Inga Ennen, Andreas Hütten, Kornelius Nielsch, Stephan Schulz, Martin Mittendorff, Gabi Schierning
Publikováno v:
Small
Three-dimensional topological insulators (3D TI) exhibit conventional parabolic bulk bands and protected Dirac surface states. A thorough investigation of the different transport channels provided by the bulk and surface carriers using macroscopic sa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57c50e6a5479600c16d1186530622f52
https://pub.uni-bielefeld.de/record/2968382
https://pub.uni-bielefeld.de/record/2968382
Autor:
Jeong Woo Han, Sepideh Izadi, Sarah Salloum, Ulrike Wolff, Lauritz Schnatmann, Ahana Bhattacharya, Aswin Asaithambi, Sebastian Matschy, Heike Schlörb, Heiko Reith, Nicolas Perez, Kornelius Nielsch, Stephan Schulz, Gabi Schierning, Martin Mittendorff
Nanograined Bi2Te3 offers a large surface-to-volume ratio, making it an interesting material to employ the high mobility surface states for devices. We present THz spectroscopic measurements to reveal the role of the surface carriers.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b65556aa1ee47abfcae19303c6b2324
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=85139918071
https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&origin=inward&scp=85139918071
Autor:
Heiko Reith, Nicolás Pérez, Lauritz Schnatmann, H. Schlörb, Sarah Salloum, Aswin Asaithambi, Ulrike Wolff, Jeong Woo Han, Kornelius Nielsch, Stephan Schulz, Gabi Schierning, Sebastian Matschy, Sepideh Izadi, Martin Mittendorff
Publikováno v:
Small
3D topological insulators (TI) host surface carriers with extremely high mobility. However, their transport properties are typically dominated by bulk carriers that outnumber the surface carriers by orders of magnitude. A strategy is herein presented
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d94aa65663969055cecd4ea21b52d22f
https://doi.org/10.1002/smll.202103281
https://doi.org/10.1002/smll.202103281
Autor:
Jacob C. König-Otto, H. Dennis Drew, Martin Mittendorff, Alexander L. Gaeta, Ni Ni, Bing Shen, Mohammad M. Jadidi, Yigit Aytac, Thomas E. Murphy, Stephan Winnerl, Mehdi Kargarian
Publikováno v:
Physical Review B 102(2020), 245123
Solids with topologically robust electronic states exhibit unusual electronic and optical properties that do not exist in other materials. A particularly interesting example is chiral charge pumping, the so-called chiral anomaly, in recently discover
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5979a6045d30ed384aec40f46ce0659a
https://doi.org/10.1103/physrevb.102.245123
https://doi.org/10.1103/physrevb.102.245123