Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Shovon Pal"'
Autor:
Shovon Pal, Nives Strkalj, Chia-Jung Yang, Mads C. Weber, Morgan Trassin, Michael Woerner, Manfred Fiebig
Publikováno v:
Physical Review X, Vol 11, Iss 2, p 021023 (2021)
Soft modes are intimately linked to structural instabilities and are key for the understanding of phase transitions. The soft modes in ferroelectrics, for example, map directly the polar order parameter of a crystal lattice. Driving these modes into
Externí odkaz:
https://doaj.org/article/e66ce97dc5a245e7853daceea7095f97
Autor:
Chia-Jung Yang, Shovon Pal, Farzaneh Zamani, Kristin Kliemt, Cornelius Krellner, Oliver Stockert, Hilbert v. Löhneysen, Johann Kroha, Manfred Fiebig
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033296 (2020)
The Drude model describes the free-electron conduction in simple metals, governed by the freedom that the mobile electrons have within the material. In strongly correlated systems, however, a significant deviation of the optical conductivity from the
Externí odkaz:
https://doaj.org/article/a5d451137d36454d9dc15e6fcb66a721
Autor:
Michael Woerner, Mads C. Weber, Nives Strkalj, Chia-Jung Yang, Manfred Fiebig, Morgan Trassin, Shovon Pal
Publikováno v:
Physical Review X, 11 (2)
Physical Review X, Vol 11, Iss 2, p 021023 (2021)
Physical Review X, Vol 11, Iss 2, p 021023 (2021)
Soft modes are intimately linked to structural instabilities and are key for the understanding of phase transitions. The soft modes in ferroelectrics, for example, map directly the polar order parameter of a crystal lattice. Driving these modes into
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcd674ce64fbd05e9eb6c4f8dd452ad1
https://hdl.handle.net/20.500.11850/481202
https://hdl.handle.net/20.500.11850/481202
Autor:
Jérôme Faist, Martin Franckié, David Stark, Manfred Fiebig, Shovon Pal, Mattias Beck, Sergej Markmann, Giacomo Scalari
Publikováno v:
Conference on Lasers and Electro-Optics.
We have performed two-dimensional THz spectroscopy on an unbiased quan- tum cascade structure (QCS), and observe multiple nonlinear pump-probe signals origi- nating from the engineered intersubband system. Moreover, we provide experimental and simula
Autor:
David Stark, Jérôme Faist, Martin Franckié, Manfred Fiebig, Sergej Markmann, Shovon Pal, Mattias Beck, Giacomo Scalari
Publikováno v:
Nanophotonics, 10 (1)
Nanophotonics
Nanophotonics, Vol 10, Iss 1, Pp 171-180 (2020)
Nanophotonics
Nanophotonics, Vol 10, Iss 1, Pp 171-180 (2020)
Understanding and controlling the nonlinear optical properties and coherent quantum evolution of complex multilevel systems out of equilibrium is essential for the new semiconductor device generation. In this work, we investigate the nonlinear system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38b6aa70999f6b27b738b33d6e54f77b
https://hdl.handle.net/20.500.11850/457092
https://hdl.handle.net/20.500.11850/457092
Autor:
David Stark, Manfred Fiebig, Giacomo Scalari, Shovon Pal, M. Beck, Martin Franckié, Sergej Markmann, Jérôme Faist
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We use two-dimensional (2D) THz-spectroscopy to study the $\chi^{(3)}$ non-linearities originating from four-wave mixing (FWM) in a quantum cascade structure (QCS), embedded in a single-plasmon waveguide. This approach allows us to extract the streng
Publikováno v:
Thermochimica Acta. 662:69-74
In this paper, we propose a method for measuring thermal and infrared properties of infrared transparent and semi-transparent thin film. We have investigated an undoped Al0.33Ga0.67As thin film epitaxially grown on a heavily Zn doped GaAs substrate u
Autor:
Nives Strkalj, Manfred Fiebig, Morgan Trassin, G. De Luca, Shovon Pal, Nicola A. Spaldin, Jakob Schaab, Marta D. Rossell, Marco Campanini, Chiara Gattinoni
Publikováno v:
Physical Review Letters
Physical Review Letters, 123 (14)
Physical Review Letters, 123 (14)
We identify a transient enhancement of the depolarizing field, leading to an unexpected quench of net polarization, during the growth of a prototypical metal-ferroelectric-metal epitaxial system made of ${\mathrm{BaTiO}}_{3}$ and ${\mathrm{SrRuO}}_{3
Autor:
Hilbert von Löhneysen, Manfred Fiebig, Johann Kroha, Oliver Stockert, Christoph Wetli, Shovon Pal, Farzaneh Zamani
Publikováno v:
Physical Review Letters, 122 (9)
We measure the quasiparticle weight in the heavy-fermion compound CeCu$_{6-x}$Au$_{x}$ ($x=0,\ 0.1$) by time-resolved THz spectroscopy for temperatures from 2 up to 300\,K. This method distinguishes contributions from the heavy Kondo band and from th