Isomeric electronic states in concentric quantum rings

• We show that polarized few-electron concentric double quantum rings display localized states that are the quantum analog of classical equilibrium ones. These states have very similar energies but fairly different angular momenta, constituting a new physical realization of the isomeric states found in nuclear and molecular physics. Their fingerprint is a very soft mode in the infrared-absorption spectrum at nearly the dipole excitation energy of a rigidly rotating N-electron molecule. The yrast line and the infrared-absorption spectrum are discussed for N=4 and 6 electron configurations.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Hälsovetenskap -- Näringslära (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Health Sciences -- Nutrition and Dietetics (hsv//eng)

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Nyckelord

infrared spectra

localised states

quantum dots

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)