Zobrazeno 1 - 10
of 249
pro vyhledávání: '"Pentcheva R"'
Autor:
Radhakrishnan, P., Geisler, B., Fürsich, K., Putzky, D., Wang, Y., Christiani, G., Logvenov, G., Wochner, P., van Aken, P. A., Pentcheva, R., Benckiser, E.
Heterostructuring provides different ways to manipulate the orbital degrees of freedom and to tailor orbital occupations in transition metal oxides. However, the reliable prediction of these modifications remains a challenge. Here, we present a detai
Externí odkaz:
http://arxiv.org/abs/2112.05444
Autor:
Di Capua, R., Verma, M., Radovic, M., Strocov, V. N., Piamonteze, C., Guedes, E. B., Plumb, N., Chen, Yu, D'Antuono, M., De Luca, G. M., Di Gennaro, E., Stornaiuolo, D., Preziosi, D., Jouault, B., Granozio, F. Miletto, Sambri, A., Pentcheva, R., Ghiringhelli, G., Salluzzo, M.
Multi-orbital physics in quasi-two-dimensional electron gases (q2DEGs) triggers unique phenomena not observed in bulk materials, such as unconventional superconductivity and magnetism. Here, we investigate the mechanism of orbital selective switching
Externí odkaz:
http://arxiv.org/abs/2109.06138
Autor:
Bisht, R. S., Mograbi, M., Rout, P. K., Tuvia, G., Dagan, Y., Yoon, Hyeok, Swartz, A. G., Hwang, H. Y., Li, L. L., Pentcheva, R.
In polar-oxide interfaces, a certain number of monolayers (ML) is needed for conductivity to appear. This threshold for conductivity is explained by accumulating sufficient electric potential to initiate charge transfer to the interface. Here we stud
Externí odkaz:
http://arxiv.org/abs/2102.07239
Autor:
Di Capua, R., Verma, M., Radovic, M., Plumb, N. C., Dil, J. H., Ristic, Z., Guedes, E. B., De Luca, G. M., Preziosi, D., Wang, Z., Weber, A. P., Pentcheva, R., Salluzzo, M.
Studies on oxide quasi-two dimensional electron gas (q2DEG) have been a playground for the discovery of novel and sometimes unexpected phenomena, like the reported magnetism at the surface and at the interface between LaAlO$_{3}$ and SrTiO$_{3}$ non-
Externí odkaz:
http://arxiv.org/abs/2003.05494
Autor:
Rothenbach, N., Gruner, M. E., Ollefs, K., Schmitz-Antoniak, C., Salamon, S., Zhou, P., Li, R., Mo, M., Park, S., Shen, X., Weathersby, S., Yang, J., Wang, X. J., Šipr, O., Ebert, H., Sokolowski-Tinten, K., Pentcheva, R., Bovensiepen, U., Eschenlohr, A., Wende, H.
Publikováno v:
Phys. Rev. B 104, 144302 (2021)
Time-dependent and constituent-specific spectral changes in soft near edge X-ray spectroscopy (XAS) of an [Fe/MgO]$_8$ metal/insulator heterostructure upon laser excitation are analyzed at the O K-edge with picosecond time resolution. The oxygen abso
Externí odkaz:
http://arxiv.org/abs/1911.06201
Autor:
Arab, Arian, Liu, Xiaoran, Köksal, O., Yang, W., Chandrasena, R. U., Middey, S., Kareev, M., Kumar, S., Husanu, M. -A., Yang, Z., Gu, L., Strocov, V. N., Lee, T. -L., Minár, J., Pentcheva, R., Chakhalian, J., Gray, A. X.
Artificial complex-oxide heterostructures containing ultrathin buried layers grown along the pseudocubic [111] direction have been predicted to host a plethora of exotic quantum states arising from the graphene-like lattice geometry and the interplay
Externí odkaz:
http://arxiv.org/abs/1905.11441
Autor:
Rothenbach, N., Gruner, M. E., Ollefs, K., Schmitz-Antoniak, C., Salamon, S., Zhou, P., Li, R., Mo, M., Park, S., Shen, X., Weathersby, S., Yang, J., Wang, X. J., Pentcheva, R., Wende, H., Bovensiepen, U., Sokolowski-Tinten, K., Eschenlohr, A.
Publikováno v:
Phys. Rev. B 100, 174301 (2019)
The element specificity of soft X-ray spectroscopy makes it an ideal tool for analyzing the microscopic origin of ultrafast dynamics induced by localized optical excitation in metal-insulator heterostructures. Using [Fe/MgO]$_n$ as a model system, we
Externí odkaz:
http://arxiv.org/abs/1902.05264
Publikováno v:
Phyica C 549, 99 (2018)
The search for robust examples of the magnetic version of topological insulators, referred to as quantum anomalous Hall insulators or simply Chern insulators, so far lacks success. Our groups have explored two distinct possibilities based on multiorb
Externí odkaz:
http://arxiv.org/abs/1802.07411
Autor:
Wrobel, F., Geisler, B., Wang, Y., Christiani, G., Logvenov, G., Bluschke, M., Schierle, E., van Aken, P. A., Pentcheva, R., Benckiser, E., Keimer, B.
Publikováno v:
Phys. Rev. Materials 2, 035001 (2018)
Layer-by-layer oxide molecular beam epitaxy has been used to synthesize cuprate-nickelate multilayer structures of composition (La$_2$CuO$_4$)$_m$/LaO/(LaNiO$_3$)$_n$. In a combined experimental and theoretical study, we show that these structures al
Externí odkaz:
http://arxiv.org/abs/1706.02173
Autor:
Eiteneer, D., Pálsson, G. K., Nemšák, S., Gray, A. X., Kaiser, A. M., Son, J., LeBeau, J., Conti, G., Greer, A. A., Keqi, A., Rattanachata, A., Saw, A. Y., Bostwick, A., Rotenberg, E., Gullikson, E. M., Ueda, S., Kobayashi, K., Janotti, A., Van de Walle, C. G., Blanca-Romero, A., Pentcheva, R., Schneider, C. M., Stemmer, S., Fadley, C. S.
LaNiO$_3$ (LNO) is an intriguing member of the rare-earth nickelates in exhibiting a metal-insulator transition for a critical film thickness of about 4 unit cells [Son et al., Appl. Phys. Lett. 96, 062114 (2010)]; however, such thin films also show
Externí odkaz:
http://arxiv.org/abs/1510.06600