Grundlagen der Natur

Am Paul Scherrer Institut suchen Forschende nach Antworten auf die fundamentale Frage nach den Grundstrukturen der Materie und den fundamentalen Funktionsprinzipien in der Natur. Sie untersuchen Aufbau und Eigenschaften der Elementarteilchen – der kleinsten Bausteine der Materie – oder gehen der Frage nach, wie biologische Moleküle aufgebaut sind und wie sie ihre Funktion erfüllen. Das so gewonnene Wissen öffnet neue Lösungsansätze in Wissenschaft, Medizin oder Technologie.

Mehr dazu unter Überblick Grundlagen der Natur

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Observation of a d-wave nodal liquid in highly underdoped Bi2Sr2CaCu2O8+δ

A key question in condensed-matter physics is to understand how high-temperature superconductivity emerges on adding mobile charged carriers to an antiferromagnetic Mott insulator. We address this question using angle-resolved photoemission spectroscopy to probe the electronic excitations of the non-superconducting state that exists between the Mott insulator and the d-wave superconductor in Bi2Sr2CaCu2O8+δ.

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Watching atoms move: an ultrafast phase transition

One approach to advance our understanding of the complex interactions between different degrees of freedom in strongly correlated systems is to use time-resolved methods to study the response of a material after it has been driven out of equilibrium. Ultrafast optical techniques have demonstrated considerable potential to unravel the correlations that drive the interesting physics in such materials.

How fast can the lattice symmetry of a solid change?

One approach to advance our understanding of the complex interactions between different degrees of freedom in strongly correlated systems is to use time-resolved methods to study the response of a material after it has been driven out of equilibrium. Ultrafast optical techniques have demonstrated considerable potential to unravel the correlations that drive the interesting physics in such materials.