Seminarium Fizyki Politechniki Wrocławskiej – poniedziałek 11 maja 2026 roku

Serdecznie zapraszamy na Seminarium Fizyki Politechniki Wrocławskiej w poniedziałek 11 maja 2026 roku o godzinie 11:15 do sali 322, w budynku A-1, na którym wygłoszony zostanie referat:

Can (Cd,Mn)Te quantum wells still hold surprises after years of research?

Prof. Piotr Kossacki
 
Instytut Fizyki, Uniwersytet Warszawski

———————————————————————————————————————
Quantum wells based on (Cd,Mn)Te have been studied for over 30 years. Despite this, they still hide surprises and offer interesting and unexpected physics. During my seminar, I will focus on two new, surprising results. The first concerns measurements of exciton diffusion and coherence propagation investigated using the heterodyne four-wave mixing technique. By measuring the nonlinear response with micron-scale spatial resolution, we were able to determine the propagation velocity of exciton coherence and demonstrate that it is significantly faster than exciton diffusion. As a second example, I will discuss new results from optically detected magnetic resonance (ODMR) and how they shed new light on the properties of the carrier gas within the quantum well.