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Doping dependence and electron-boson coupling in the ultrafast relaxation of hot electron populations in Ba(Fe_{1-x}Co_x)_2As_2

Autor: Avigo, I., Thirupathaiah, S., Ligges, M., Wolf, T., Fink, J., Bovensiepen, U.

Using femtosecond time- and angle-resolved photoemission spectroscopy we investigate the effect of electron doping on the electron dynamics in Ba(Fe_{1-x}Co_x)_2As_2 in a range of 0 < x < 0.15 at temperatures slightly above the N\'eel temperature. By

Externí odkaz: http://arxiv.org/abs/1605.05177

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Energy dissipation in the time domain governed by bosons in a correlated material

Autor: Rameau, J. D., Freutel, S., Sentef, M. A., Kemper, A. F., Freericks, J. K., Avigo, I., Ligges, M., Rettig, L., Yoshida, Y., Eisaki, H., Schneeloch, J., Zhong, R. D., Xu, Z. J., Gu, G. D., Johnson, P. D., Bovensiepen, U.

Publikováno v: Nature Communications 7, Article number: 13761 (2016)

In complex materials various interactions play important roles in determining the material properties. Angle Resolved Photoelectron Spectroscopy (ARPES) has been used to study these processes by resolving the complex single particle self energy $\Sig

Externí odkaz: http://arxiv.org/abs/1505.07055

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Non-Fermi-liquid scattering rates and anomalous band dispersion in ferropnictides

Autor: Fink, J., Charnukha, A., Rienks, E. D. L., Liu, Z. H., Thirupathaiah, S., Avigo, I., Roth, F., Jeevan, H. S., Gegenwart, P., Roslova, M., Morozov, I., Wurmehl, S., Bovensiepen, U., Borisenko, S., Vojta, M., Buechner, B.

Publikováno v: Phys. Rev. B 92. 201106 (R) (2015)

Angle-resolved photoemission spectroscopy (ARPES) is used to study the band dispersion and the quasiparticle scattering rates in two ferropnictides systems. Our ARPES results show linear-in-energy dependent scattering rates which are constant in a wi

Externí odkaz: http://arxiv.org/abs/1501.02135

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Electronic structure and quantum criticality in Ba(Fe$_{1-x-y}$Co$_{x}$Mn$_{y}$)$_{2}$As$_{2}$, an ARPES study

Autor: Rienks, E. D. L., Wolf, T., Koepernik, K., Avigo, I., Hlawenka, P., Lupulescu, C., Arion, T., Roth, F., Eberhardt, W., Bovensiepen, U., Fink, J.

Publikováno v: EPL 103, 47004 (2013)

We used angle-resolved photoemission spectroscopy (ARPES) and density functional theory calculations to study the electronic structure of Ba(Fe1-x-yCoxMny)2As2 for x=0.06 and 0<=y <=0.07. From ARPES we derive that the substitution of Fe by Mn does no

Externí odkaz: http://arxiv.org/abs/1301.4365

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Ultrafast Doublon Dynamics in Photoexcited $1T-TaS_{2}$

Autor: Ligges, M., Avigo, I., Rossnagel, K., Eckstein, M., Werner, P., Bovensiepen, U., Golež, D., Strand, H. U. R., Beyazit, Y., Hanff, K., Diekmann, F., Stojchevska, L., Kalläne, M., Zhou, P.

Publikováno v: Physical Review Letters
Physical review letters 120(16), 166401 (2018). doi:10.1103/PhysRevLett.120.166401

Physical review letters 120(16), 166401 (2018). doi:10.1103/PhysRevLett.120.166401
Strongly correlated materials exhibit intriguing properties caused by intertwined microscopic interactions that are hard to disentangle in equilibrium. Employing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83e375f404d49dc87d4fe0ea7b47a5d0

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Ultrafast Doublon Dynamics in Photoexcited 1 T - TaS 2

Autor: Ligges, M., Avigo, I., Golež, D., Strand, H. U. R., Beyazit, Y., Hanff, K., Diekmann, F., Stojchevska, L., Kalläne, M., Zhou, P., Rossnagel, K., Eckstein, M., Werner, P., Bovensiepen, U.

Publikováno v: Physical Review Letters

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::ef1fda485c1f960b67428c6e58c76917

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Doping dependence and electron–boson coupling in the ultrafast relaxation of hot electron populations in Ba(Fe₁₋ₓCoₓ)₂As₂

Autor: Avigo, I., Thirupathaiah, S., Ligges, M., Wolf, T., Fink, J., Bovensiepen, U.

Publikováno v: New journal of physics, 18 (9), 093028

Using femtosecond time- and angle-resolved photoemission spectroscopy we investigate the effect of electron doping on the electron dynamics in Ba(Fe1-xCox)2As2 in a range of $0\leq \ $x< 0.15 at temperatures slightly above the Néel temperature. By a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3648838df1001a6802be5038a72062a3
https://publikationen.bibliothek.kit.edu/1000059477/3891182

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