Dresden 2026 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 5: Superconductivity: Sample Preparation and Characterization
TT 5.8: Talk
Monday, March 9, 2026, 11:30–11:45, CHE/0089
High-pressure high-temperature synthesis of uranium-silver compounds — •Jordan Tierney1, Julia-Maria Hübner2, Ulrich Schwarz1, Andreas Leithe-Jasper1, Ulrich Burkhardt1, Markus König1, Anamaria Ghihor1, Yurii Prots1, and Eteri Svanidze1 — 1MPI CPfS, Dresden — 2TU Dresden
Uranium-based quantum materials have recently entered a renaissance. Evidence of correlated topological states, spin-liquid behavior, hidden order phases, and spin-triplet superconductivity prove that these materials are exceptionally interesting. Because of their complex chemistry and fragile stability, many potentially fascinating uranium-based systems are currently entirely beyond the reach of conventional synthesis methods. In this talk, we will show how simultaneous high-pressure high-temperature synthesis, combined with micro-scale specimen isolation, can reach previously unattainable phases. We will discuss the uranium-silver system, in which no binary compounds have been previously reported; the two elements have appeared to be immiscible during conventional synthesis. By employing simultaneous high-pressure high-temperature synthesis instead, we have discovered several new materials. In particular, we were able to identify new magnetic and superconducting phases, with the detailed analysis of chemical and physical properties still currently underway. This proof-of-principle work shows that by implementing this methodology we can access high-purity materials and study their novel crystallographic arrangements and exotic quantum states. Supported by DFG grant number 553528746.
Keywords: high-pressure synthesis; uranium; quantum materials; magnetism; materials discovery