Zobrazeno 1 - 10
of 203
pro vyhledávání: '"Munzar D."'
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
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:
Xu, B., Marsik, P., Sheveleva, E., Lyzwa, F., Louat, A., Brouet, V., Munzar, D., Bernhard, C.
Publikováno v:
Phys. Rev. Lett. 124, 027402 (2020)
With optical spectroscopy we provide evidence that the insulator-metal transition in Sr$_2$Ir$_{1-x}$Rh$_{x}$O$_{4}$ occurs close to a crossover from the Mott- to the Slater-type. The Mott-gap at $x = 0$ persists to high temperature and evolves witho
Externí odkaz:
http://arxiv.org/abs/2001.05697
Publikováno v:
Phys. Rev. B 97, 045137 (2018)
We present results of our broadband ellipsometry measurements of the optical response of ferromagnetic La$_{0.7}$Sr$_{0.3}$CoO$_3$. Our data show that the ferromagnetic transition is accompanied by a transfer of optical spectral weight from an absorp
Externí odkaz:
http://arxiv.org/abs/1801.02424
Autor:
Sen, K., Perret, E., Alberca, A., Uribe-Laverde, M. A., Marozau, I., Yazdi-Rizi, M., Mallett, B. P. P., Marsik, P., Piamonteze, C., Khaydukov, Y., Döbeli, M., Keller, T., Biškup, N., Varela, M., Vašátko, J., Munzar, D., Bernhard, C.
Publikováno v:
Phys. Rev. B 93, 205131 (2016)
With x-ray absorption spectroscopy and polarized neutron reflectometry we studied how the magnetic proximity effect at the interface between the cuprate high-$T_C$ superconductor $\mathrm{YBa_2Cu_3O_7}$ (YBCO) and the ferromagnet $\mathrm{La_{2/3}Ca_
Externí odkaz:
http://arxiv.org/abs/1601.03844
Autor:
Uribe-Laverde, M. A., Das, S., Sen, K., Marozau, I., Perret, E., Alberca, A., Heidler, J., Piamonteze, C., Merz, M., Nagel, P., Schuppler, S., Munzar, D., Bernhard, C.
With x-ray absorption spectroscopy we investigated the orbital reconstruction and the induced ferromagnetic moment of the interfacial Cu atoms in YBa$_2$Cu$_3$O$_{7}$/La$_{2/3}$Ca$_{1/3}$MnO$_3$ (YBCO/LCMO) and La$_{2-x}$Sr$_{x}$CuO$_4$/La$_{2/3}$Ca$
Externí odkaz:
http://arxiv.org/abs/1410.8399
Autor:
Marsik, P., Wang, C. N., Roessle, M., Yazdi-Rizi, M., Schuster, R., Kim, K. W., Dubroka, A., Munzar, D., Wolf, T., Chen, X. H., Bernhard, C.
Publikováno v:
Phys. Rev. B 88, 180508(R) (2013)
We studied the doping and temperature (T) dependence of the infrared (IR) response of Ba(Fe1-xCox)2As2 single crystals. We show that a weak band around 1000 cm-1, that was previously interpreted in terms of interaction of the charge carriers with mag
Externí odkaz:
http://arxiv.org/abs/1309.3198
Publikováno v:
APPLIED PHYSICS LETTERS 97, 203107 (2010)
The electronic structure of InAs quantum dots covered with the GaAs(1-y)Sb(y) strain reducing layer has been studied using the k.p theory. We explain previous experimental observations of the red shift of the photoluminescence emission with increasin
Externí odkaz:
http://arxiv.org/abs/1209.6234
Autor:
Klenovský, P., Brehm, M., Křápek, V., Lausecker, E., Munzar, D., Hackl, F., Steiner, H., Fromherz, T., Bauer, G., Humlíček, J.
Publikováno v:
Physical Review B 86, 115305 (2012)
The pumping intensity (I) dependence of the photoluminescence (PL) spectra of perfectly laterally two-dimensionally ordered SiGe quantum dots on Si(001) substrates was studied. The PL results from recombinations of holes localized in the SiGe quantum
Externí odkaz:
http://arxiv.org/abs/1209.6230
Autor:
Dubroka, A., Roessle, M., Kim, K. W., Malik, V. K., Munzar, D., Basov, D. N., Schafgans, A., Moon, S. J., Lin, C. T., Haug, D., Hinkov, V., Keimer, B., Wolf, Th., Storey, J. G., Tallon, J. L., Bernhard, C.
Publikováno v:
Phy. Rev. Lett. 106, 047006 (2011)
We show that a multilayer analysis of the infrared c-axis response of RBa2Cu3O7-d (R=Y, Gd, Eu) provides important new information about the anomalous normal state properties of underdoped cuprate high temperature superconductors. Besides competing c
Externí odkaz:
http://arxiv.org/abs/1009.2925