Zobrazeno 1 - 10
of 235
pro vyhledávání: '"Rößler, U. K."'
Autor:
Chen, K., Luo, C., Baudelet, Y. Zhao F., Maurya, A., Thamizhavel, A., Rößler, U. K., Makarov, D., Radu, F.
Publikováno v:
J. Phys. Chem. Lett. 2023, 14, 1000-1006
In rare-earth compounds with valence fluctuation, the proximity of the 4f level to the Fermi energy leads to instabilities of the charge configuration and the magnetic moment. Here, we provide direct experimental evidence for an induced magnetic pola
Externí odkaz:
http://arxiv.org/abs/2301.12414
Autor:
Crivillero, M. Victoria Ale, Rößler, Sahana, Rosa, Priscila F. S., Müller, J., Rößler, U. K., Wirth, S.
Publikováno v:
Phys. Rev. B 106, 035124 (2022)
We performed Scanning Tunneling Microscopy and Spectroscopy (STM/STS) measurements to investigate the Zintl phase Eu$_5$In$_2$Sb$_6$, a non-symmorphic antiferromagnet. The theoretical prediction of a non-trivial Fermi surface topology stabilized by t
Externí odkaz:
http://arxiv.org/abs/2204.07001
Autor:
Andersen, I. M., Wolf, D., Rodriguez, L. A., Lubk, A., Oliveros, D., Bran, C., Niermann, T., Rößler, U. K., Vazquez, M., Gatel, C., Snoeck, E.
Publikováno v:
Phys. Rev. Res. 3, (2021) 033085
Cylindrical magnetic nanowires with large transversal magnetocrystalline anisotropy have been shown to sustain non-trivial magnetic configurations resulting from the interplay of spatial confinement, exchange, and anisotropies. Exploiting these pecul
Externí odkaz:
http://arxiv.org/abs/2107.13201
Autor:
Heinze, L., Bastien, G., Ryll, B., Hoffmann, J. -U., Reehuis, M., Ouladdiaf, B., Bert, F., Kermarrec, E., Mendels, P., Nishimoto, S., Drechsler, S. -L., Rößler, U. K., Rosner, H., Büchner, B., Studer, A. J., Rule, K. C., Süllow, S., Wolter, A. U. B.
Publikováno v:
Phys. Rev. B 99, 094436 (2019)
We report on a detailed neutron diffraction and $^1$H-NMR study on the frustrated spin-1/2 chain material linarite, PbCuSO$_4$(OH)$_2$, where competing ferromagnetic nearest neighbor and antiferromagnetic next-nearest neighbor interactions lead to fr
Externí odkaz:
http://arxiv.org/abs/1901.02842
Autor:
Sokolov, D. A., Kikugawa, N., Helm, T., Borrmann, H., Burkhardt, U., Cubitt, R., Ressouche, E., Bleuel, M., Kummer, K., Mackenzie, A. P., Rößler, U. K.
Publikováno v:
Nat. Phys. 15, 671-677 (2019)
The notion of a simple ordered state implies homogeneity. If the order is established by a broken symmetry, elementary Landau theory of phase transitions shows that only one symmetry mode describes this state. Precisely at points of phase coexistence
Externí odkaz:
http://arxiv.org/abs/1810.06247
Autor:
Mydeen, K., Kasinathan, D., Koz, C., Rößler, S., Rößler, U. K., Hanfland, M., Tsirlin, A. A., Schwarz, U., Wirth, S., Rosner, H., Nicklas, M.
Publikováno v:
Phys. Rev. Lett. 119, 227003 (2017)
A rapid and anisotropic modification of the Fermi-surface shape can be associated with abrupt changes in crystalline lattice geometry or in the magnetic state of a material. In this study we show that such an electronic topological transition is at t
Externí odkaz:
http://arxiv.org/abs/1711.10745
Autor:
Kopte, M., Rößler, U. K., Schäfer, R., Kosub, T., Kákay, A., Volkov, O., Fuchs, H., Vedmedenko, E. Y., Radu, F., Schmidt, O. G., Lindner, J., Faßbender, J., Makarov, D.
The magnetic properties of ferromagnetic thin films down to the nanoscale are ruled by the exchange stiffness, anisotropies and the effects of magnetic fields. As surfaces break inversion symmetry, an additional effective chiral exchange is omniprese
Externí odkaz:
http://arxiv.org/abs/1706.09322
Autor:
Martin, N., Deutsch, M., Chaboussant, G., Damay, F., Bonville, P., Fomicheva, L. N., Tsvyashchenko, A. V., Rössler, U. K., Mirebeau, I.
Publikováno v:
Phys. Rev. B 96, 020413 (2017)
We study the evolution of helical magnetism in MnGe chiral magnet upon partial substitution of Mn for non magnetic 3d-Co and 4d-Rh ions. At high doping levels, we observe spin helices with very long periods -more than ten times larger than in the pur
Externí odkaz:
http://arxiv.org/abs/1702.06511
Autor:
Wilhelm, H., Leonov, A. O., Rößler, U. K., Burger, P., Hardy, F., Meingast, C., Gruner, M. E., Schnelle, W., Schmidt, M., Baenitz, M.
Publikováno v:
Phys. Rev. B 94, 144424 (2016)
The critical behavior of the cubic helimagnet FeGe was obtained from isothermal magnetization data in very close vicinity of the ordering temperature. A thorough and consistent scaling analysis of these data revealed the critical exponents $\beta=0.3
Externí odkaz:
http://arxiv.org/abs/1610.00862
Autor:
Grafe, H. -J., Nishimoto, S., Iakovleva, M., Vavilova, E., Spillecke, L., Alfonsov, A., Sturza, M. -I., Wurmehl, S., Nojiri, H., Rosner, H., Richter, J., Rößler, U. K., Drechsler, S. -L., Kataev, V., Büchner, B.
Publikováno v:
revised version published in Sci. Rep. 7, 6729 (2017)
Modern theories of quantum magnetism predict exotic multipolar states in weakly interacting strongly frustrated spin-1/2 Heisenberg chains with ferromagnetic nearest neighbor (NN) inchain exchange in high magnetic fields. Experimentally these states
Externí odkaz:
http://arxiv.org/abs/1607.05164