SKM 2021 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 4: Focus Session: Correlated van-der-Waals Magnets
Montag, 27. September 2021, 13:30–16:15, H7
Reducing the dimensionality of electronic materials often yields novel phenomena and exceptional physical properties. In layered van-der-Waals (vdW) materials which are formed by structurally stable but out-of-plane only weakly coupled crystalline layers this is, e.g., demonstrated by the presence of long-range magnetic order down to the bilayer in Cr2Ge2Te6 and down to the monolayer in CrI3. For VSe2, the presence of ferromagnetism even at room temperature has been reported for monolayers while the bulk material is paramagnetic. Due to their quasi-2D, layered vdW-magnets do not only allow to investigate fundamental aspects of electronic correlation in structurally reduced dimensionality, but also hold a promise for technological applications, as demonstrated, e.g., by Cr2Ge2O6/NiO heterostructures or NiPS3-based field-effect transistors. Furthermore, the recent discovery of magnetic topological insulators (MTIs) in the (MnBi2Te4)(Bi2Te3)n (n = 0, 1, 2) family of vdW compounds has provided a rich experimental basis for the realization of new emerging physical phenomena such as the quantum anomalous Hall effect, the topological magnetoelectric effect, and majorana fermions emerging in MTIs due to a coexistence of the long-range magnetic order and the topologically nontrivial electronic band structure.
Organizers: Bernd Büchner (IFW Dresden), Rüdiger Klingeler (Heidelberg University)
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13:30 | TT 4.1 | Topological states in MnBi2Te4-based magnetic van der Waals materials — •Hendrik Bentmann, Raphael. C. Vidal, Philipp Kagerer, Sebastian Buchberger, Celso Fornari, Anna Isaeva, and Friedrich Reinert |
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14:00 | TT 4.2 | Static and dynamic magnetic properties of (MnBi2Te4)(Bi2Te3)n (n = 0, 1) probed by electron spin resonance technique. — •Alexey Alfonsov, Kavita Mehlawat, Jorge I. Facio, Ali G. Moghaddam, Rajyavardhan Ray, Alexander Zeugner, Manuel Richter, Anna Isaeva, Jeroen van den Brink, Bernd Büchner, and Vladislav Kataev |
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14:15 | TT 4.3 | Tuning Magnetic and Transport Properties in Quasi-2D (Mn1−xNix)2P2S6 Single Crystals — •S. Aswartham, Y. Shemerliuk, Y. H. Zhou, Z. R. Yang, G. Cao, A.U.B. Wolter, and B. Büchner |
| 14:30 | 15. min. break | ||
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14:45 | TT 4.4 | Hauptvortrag: 2D Magnetism and Its Efficient Control — •Cheng Gong |
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15:15 | TT 4.5 | Coulomb-Engineered Magnetism in CrI3 Monolayer — David Soriano, Alexander Rudenko, Mikhail Katsnelson, and •Malte Rösner |
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15:30 | TT 4.6 | Magnetoelastic coupling in the ferromagnetic van-der-Waals material CrI3 — •Jan Arneth, Martin Jonak, Sven Spachmann, Mahmoud Abdel-Hafiez, Yaroslav Kvashnin, and Rüdiger Klingeler |
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15:45 | TT 4.7 | Probing magnetic states in 2D layered van-der- Waals materials under pressure — Anirudha Gosh, Deobrat Singh, Qingge Mu, Sergey Medvedev, Rajeev Ahuja, Olle Eriksson, and •Mahmoud Abdel-Hafiez |
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16:00 | TT 4.8 | Magnetic- and structural properties of α-RuCl3 under hydrostatic He-gas pressure — •Bernd Wolf, Anja Wolter-Giraud, Gael Bastien, Anna Isaeva, David Kaib, Aleksandar Razpop, Kira Riedl, Sananda Biswas, Roser Valentí, Bernd Büchner, and Michael Lang |