title: Fock-Darwin-like quantum dot states formed by charged Mn interstitial ions.
abstract: We report a method of creating electrostatically induced quantum dots by thermal diffusion of interstitial Mn ions out of a p-type (GaMn)As layer into the vicinity of a GaAs quantum well. This approach creates deep, approximately circular, and strongly confined dotlike potential minima in a large (200 microm) mesa diode structure without need for advanced lithography or electrostatic gating. Magnetotunneling spectroscopy of an individual dot reveals the symmetry of its electronic eigenfunctions and a rich energy level spectrum of Fock-Darwin-like states with an orbital angular momentum component |lz| from 0 to 11.
authors.affiliation: School of Physics & Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom. oleg.makarovsky@nottingham.ac.uk
authors.forename: O
authors.initials: O
authors.lastname: Makarovsky
authors.forename: O
authors.initials: O
authors.lastname: Thomas
authors.forename: A G
authors.initials: AG
authors.lastname: Balanov
authors.forename: L
authors.initials: L
authors.lastname: Eaves
authors.forename: A
authors.initials: A
authors.lastname: Patanè
authors.forename: R P
authors.initials: RP
authors.lastname: Campion
authors.forename: C T
authors.initials: CT
authors.lastname: Foxon
authors.forename: E E
authors.initials: EE
authors.lastname: Vdovin
authors.forename: D K
authors.initials: DK
authors.lastname: Maude
authors.forename: G
authors.initials: G
authors.lastname: Kiesslich
authors.forename: R J
authors.initials: RJ
authors.lastname: Airey