ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT szfki.hu>]

SZFI SeminarNémeth RóbertEötvös Loránd Tudományegyetem (host: Kiss 
Tamás)Aharonov–Bohm Effect in Multiband Electron SystemsTuesday, 25 April 
2023, 10:00, KFKI Campus, Bldg. 1, 2nd floor, Conference RoomIn 1959, Yakir 
Aharonov and David Bohm discovered theoretically that the quantum mechanical 
scattering of charged particles on an infinitesimally thin solenoid differs 
significantly from its classical counterpart. After its experimental 
verification by Robert Chambers in 1960, the Aharonov–Bohm effect became a 
widely known phenomenon supporting quantum theory. In their original paper, 
Aharonov and Bohm presented the analytical solution of the scattering problem 
for spinless charged particles. In our paper [1], we present a unified 
treatment for two-dimensional multiband electronic systems possessing 
isotropic band structures. We propose an integral representation of the 
scattering state and derive its asymptotic form to obtain the differential 
cross section. A rather surprising result emerges: this cross section is the 
same for all isotropic systems and agrees with the original formula by 
Aharonov and Bohm. To demonstrate the generality of our theory, we apply it 
to several specific multiband systems relevant in condensed matter 
physics.[1]: R Németh, J Cserti: Unified Description of the Aharonov–Bohm 
Effect in Isotropic Multiband Electronic Systems, 
arXiv:2302.07050 Minden érdeklődőt szívesen látunk! - Everyone is 
welcome to attend.Attila Nagysem-admin AT szfki.hu