Zobrazeno 1 - 10
of 567
pro vyhledávání: '"Kummer, K"'
Autor:
Munoz-Bolanos, J. D., Rajaeipour, P., Kummer, K., Kress, M., Ataman, C., Ritsch-Marte, M., Jesacher, A.
Confocal Raman microscopy, a highly specific and label-free technique for the microscale study of thick samples, often presents difficulties due to weak Raman signals. Inhomogeneous samples introduce wavefront aberrations that further reduce these si
Externí odkaz:
http://arxiv.org/abs/2409.08725
Autor:
Li, X. T., Tu, S. J., Chaix, L., Fawaz, C., d'Astuto, M., Li, X., Yakhou-Harris, F., Kummer, K., Brookes, N. B., Garcia-Fernandez, M., Zhou, K. J., Lin, Z. F., Yuan, J., Jin, K., Dean, M. P. M., Liu, X.
Publikováno v:
Phys. Rev. Lett. 132, 056002 (2024)
We investigated the high energy spin excitations in electron-doped $\mathrm{La}_{2-x} \mathrm{Ce}_x \mathrm{CuO}_{4}$, a cuprate superconductor, by resonant inelastic x-ray scattering (RIXS) measurements. Efforts were paid to disentangle the paramagn
Externí odkaz:
http://arxiv.org/abs/2310.13214
Autor:
Biało, I., Martinelli, L., De Luca, G., Worm, P., Drewanowski, A., Choi, J., Garcia-Fernandez, M., Agrestini, S., Zhou, Ke-Jin, Kummer, K., Brookes, N. B., Guo, L., Edgeton, A., Eom, C. B., Tomczak, J. M., Held, K., Gibert, M., Wang, Qisi, Chang, J.
Publikováno v:
Commun. Phys. 7, 230 (2024)
Magnetic frustration is a route that can lead to the emergence of novel ground states, including spin liquids and spin ices. Such frustration can be introduced through either the geometry of lattice structures or by incompatible exchange interactions
Externí odkaz:
http://arxiv.org/abs/2306.05828
Autor:
Güttler, Monika, Generalov, Alexander V., Otrokov, M. M., Kummer, K., Kliemt, Kristin, Fedorov, Alexander, Chikina, Alla, Danzenbächer, Steffen, Schulz, S., Chulkov, Evgenii Vladimirovich, Koroteev, Yury Mikhaylovich, Caroca-Canales, Nubia, Shi, Ming, Radovic, Milan, Geibel, Christoph, Laubschat, Clemens, Dudin, Pavel, Kim, Timur K., Hoesch, Moritz, Krellner, Cornelius, Vyalikh, Denis V.
Publikováno v:
Scientific Reports (2016), 6, ISSN 2045-2322. DOI: 10.1038/srep24254. Artikelnr.: 24254.
Spin-polarized two-dimensional electron states (2DESs) at surfaces and interfaces of magnetically active materials attract immense interest because of the idea of exploiting fermion spins rather than charge in next generation electronics. Applying an
Externí odkaz:
http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-214847
http://www.qucosa.de/fileadmin/data/qucosa/documents/21484/srep24254.pdf
http://www.qucosa.de/fileadmin/data/qucosa/documents/21484/srep24254.pdf
Autor:
Güttler, Monika, Generalov, Alexander V., Otrokov, M. M., Kummer, K., Kliemt, Kristin, Fedorov, Alexander, Chikina, Alla, Danzenbächer, Steffen, Schulz, S., Chulkov, Evgenii Vladimirovich, Koroteev, Yury Mikhaylovich, Caroca-Canales, Nubia, Shi, Ming, Radovic, Milan, Geibel, Christoph, Laubschat, Clemens, Dudin, Pavel, Kim, Timur K., Hoesch, Moritz, Krellner, Cornelius, Vyalikh, Denis V.
Spin-polarized two-dimensional electron states (2DESs) at surfaces and interfaces of magnetically active materials attract immense interest because of the idea of exploiting fermion spins rather than charge in next generation electronics. Applying an
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A30007
https://tud.qucosa.de/api/qucosa%3A30007/attachment/ATT-0/
https://tud.qucosa.de/api/qucosa%3A30007/attachment/ATT-0/
Autor:
Rahn, M. C., Kummer, K., Hariki, A., Ahn, K. -H., Kunes, J., Amorese, A., Denlinger, J. D., Lu, D. -H., Hashimoto, M., Rienks, E., Valvidares, M., Haslbeck, F., Byler, D. D., McClellan, K. J., Bauer, E. D., Zhu, J. -X., Booth, C. H., Christianson, A. D., Lawrence, J. M., Ronning, F., Janoschek, M.
Publikováno v:
Nature Communications volume 13, Article number: 6129 (2022)
Effective models focused on pertinent low-energy degrees of freedom have substantially contributed to our qualitative understanding of quantum materials. An iconic example, the Kondo model, was key to demonstrating that the rich phase diagrams of cor
Externí odkaz:
http://arxiv.org/abs/2207.11560
Autor:
Ehrlich, H., Deutzmann, R., Brunner, E., Cappellini, E., Koon, Hannah E.C., Solazzo, C., Yang, Y., Ashford, D., Thomas-Oates, J., Lubeck, M., Baessmann, C., Langrock, T., Hoffmann, R., Worheide, G., Reitner, J., Simon, P., Tsurkan, M., Ereskovsky, A.V., Kurek, D., Bazhenov, V.V., Hunoldt, S., Mertig, M., Vyalikh, D.V., Molodtsov, S.L., Kummer, K., Worch, H., Smetacek, V., Collins, M.J.
The minerals involved in the formation of metazoan skeletons principally comprise glassy silica, calcium phosphate or carbonate. Because of their ancient heritage, glass sponges (Hexactinellida) may shed light on fundamental questions such as molecul
Externí odkaz:
http://hdl.handle.net/10454/5959
Autor:
Krieger, G., Martinelli, L., Zeng, S., Chow, L. E., Kummer, K., Arpaia, R., Sala, M. Moretti, Brookes, N. B., Ariando, A., Viart, N., Salluzzo, M., Ghiringhelli, G., Preziosi, D.
Superconductivity in infinite-layer nickelates holds exciting analogies with that of cuprates, with similar structures and $3d$-electron count. Using resonant inelastic x-ray scattering (RIXS) we studied electronic and magnetic excitations and charge
Externí odkaz:
http://arxiv.org/abs/2112.03341
Autor:
Tam, C. C., Zhu, M., Ayres, J., Kummer, K., Yakhou-Harris, F., Cooper, J. R., Carrington, A., Hayden, S. M.
Publikováno v:
Nature Communications 13, 570 (2022)
Hall effect and quantum oscillation measurements on high temperature cuprate superconductors show that underdoped compositions have a small Fermi surface pocket whereas when heavily overdoped, the pocket increases dramatically in size. The origin of
Externí odkaz:
http://arxiv.org/abs/2109.04279
Autor:
Kim, T. K., Pervakov, K. S., Vlasenko, V. A., Sadakov, A. V., Usoltsev, A. S., Evtushinsky, D. V., Jung, S. W., Poelchen, G., Kummer, K., Roditchev, D., Stolyarov, V. S., Golovchanskiy, I. A., Vyalikh, D. V., Borisov, V., Valenti, R., Ernst, A., Eremeev, S. V., Chulkov, E. V., Pudalov, V. M.
Publikováno v:
Physics-Uspekhi, 65(7) 740 (2022)
In the novel stoichiometric iron-based material RbEuFe4As4 superconductivity coexists with a peculiar long-range magnetic order of Eu 4f states; their coexistance is puzzling and represents a challenge for both experiment and theory. Using angle-reso
Externí odkaz:
http://arxiv.org/abs/2108.13928