Zobrazeno 1 - 10
of 295
pro vyhledávání: '"A Dubroka"'
Autor:
Kiaba, Michal, Suter, Andreas, Salman, Zaher, Prokscha, Thomas, Chen, Binbin, Koster, Gertjan, Dubroka, Adam
Two-dimensional magnetic materials attract a lot of attention since they potentially exhibit new magnetic properties due to, e.g., strongly enhanced spin fluctuations. However, the suppression of the long-range magnetic order in two dimensions due to
Externí odkaz:
http://arxiv.org/abs/2405.04293
Using spectroscopic ellipsometry, we studied the optical conductivity of LaCoO$_3$ with various degrees of strain. The optical response of the compressively strained \lco\ film is qualitatively similar to the one of the unstrained LaCoO$_3$ polycryst
Externí odkaz:
http://arxiv.org/abs/2404.10385
Autor:
Mohelsky, I., Wyzula, J., Mardele, F. Le, Abadizaman, F., Caha, O., Dubroka, A., Sun, X. D., Cho, C. W., Piot, B. A., Tanzim, M. F., Aguilera, I., Bauer, G., Springholz, G., Orlita, M.
Publikováno v:
Phys. Rev. B 109, 165205 (2024)
Here we report on Landau level spectroscopy of an epitaxially grown thin film of the topological insulator Sb2Te3, complemented by ellipsometry and magneto-transport measurements. The observed response suggests that Sb2Te3 is a direct-gap semiconduct
Externí odkaz:
http://arxiv.org/abs/2312.07402
We have grown La$_{0.3}$Sr$_{0.7}$CoO$_{3-{\delta}}$ thin films by pulsed laser deposition on (LaAlO$_3$)$_{0.3}$(Sr$_2$TaAlO$_3$)$_{0.7}$ substrates with and without a protective LaAlO$_3$ capping layer and investigated their structural and magnetic
Externí odkaz:
http://arxiv.org/abs/2201.04854
Autor:
Zahradnik, M., Kiaba, M., Espinoza, S., Rebarz, M., Andreasson, J., Caha, O., Abadizaman, F., Munzar, D., Dubroka, A.
We have studied ultrafast dynamics of thin films of LaCoO$_3$ and La$_{0.5}$Sr$_{0.5}$CoO$_3$ with femtosecond pump-probe ellipsometry in the energy range of 1.6-3.4 eV. We have observed a large pump-induced transfer of spectral weight in LaCoO$_3$ t
Externí odkaz:
http://arxiv.org/abs/2201.02525
Publikováno v:
New Journal of Physics, Vol 17, Iss 5, p 053022 (2015)
We performed calculations of the in-plane infrared response of underdoped cuprate superconductors to clarify the origin of a characteristic dip feature which occurs in the published experimental spectra of the real part of the in-plane conductivity b
Externí odkaz:
https://doaj.org/article/d8bb84b0a322498689c74b5368de6a86
Autor:
Mohelsky, I., Dubroka, A., Wyzula, J., Slobodeniuk, A., Martinez, G., Krupko, Y., Piot, B. A., Caha, O., Humlicek, J., Bauer, G., Springholz, G., Orlita, M.
Publikováno v:
Phys. Rev. B 102, 085201 (2020)
Here we report on Landau level spectroscopy in magnetic fields up to 34 T performed on a thin film of topological insulator Bi$_2$Te$_3$ epitaxially grown on a BaF$_2$ substrate. The observed response is consistent with the picture of a direct-gap se
Externí odkaz:
http://arxiv.org/abs/2004.13565
Autor:
Xu, B., Munzar, D., Dubroka, A., Sheveleva, E., Lyzwa, F., Marsik, P., Wang, C. N., Wang, Z. C., Cao, G. H., Bernhard, C.
Publikováno v:
Phys. Rev. B 101, 214512 (2020)
With infrared spectroscopy we studied the out-of-plane ($c$-axis) response of the iron arsenide superconductor ACa$_2$Fe$_4$As$_4$F$_2$ (A = Rb,Cs) which has a bilayer structure similar to the high $T_c$ cuprates YBa$_2$Cu$_3$O$_7$ (YBCO) and Bi$_2$S
Externí odkaz:
http://arxiv.org/abs/2004.08819
Autor:
Schmidt, E., Dubroka, A.
We present the results of a theoretical work discussing the propagation of an electromagnetic wave through nested Mach-Zehnder interferometers using classical optics and standard quantum theory. We show that some seemingly surprising effects at first
Externí odkaz:
http://arxiv.org/abs/1907.07391
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