Temperature dependence of electric-field gradient in iodine and zinc – the message of two forgotten experiments

by Heinz Haas (University of Aveiro (PT))

Tuesday 24 Oct 2023, 16:00 → 17:00 Europe/Zurich

26/1-022 (CERN)

Understanding and quantitatively reproducing the effect of temperature on the electric-field gradient (EFG) in condensed matter is worthwhile for the phenomenon itself, but also for obtaining precision information on nuclear quadrupole moments and lattice dynamics. Thus, this property has always been studied since the beginning of nuclear quadrupole interaction (NQI) investigations. Obviously, various theoretical attempts have been made for quantitative explanations, especially for the simple halogens and the hcp metals. Two examples will be discussed where experimental data that contradict early simple theories and were initially ignored can now be well understood.