Optical orientation of a single Mn spin in a quantum dot: Role of carrier spin relaxation

Abstract

In order to explain the recently observed phenomenon of optical orientation of a single Mn spin residing inside a quantum dot, a process of Mn spin relaxation with characteristic timescale of tens of nanoseconds had been invoked. We show that after taking into account the mixing of states of the exciton and the Mn spin (due to the sp-d exchange interaction), the observed Mn optical orientation time can be explained by invoking only the processes of carrier spin relaxation.

arXiv comment6 pages, 3 figures

References in corpus (10)

• Spin-flip transitions between Zeeman sublevels in semiconductor quantum dots
• Optical manipulation of a single Mn spin in a CdTe-based quantum dot
• Optical spin orientation of a single manganese atom in a quantum dot
• Optically probing the fine structure of a single Mn atom in an InAs quantum dot
• Single exciton spectroscopy of semimagnetic quantum dots
• Exciton spin relaxation in single semiconductor quantum dots
• Optical initialization, readout and dynamics of a Mn spin in a quantum dot
• Optical probing of spin fluctuations of a single magnetic atom
• Magnetization dynamics down to zero field in dilute (Cd,Mn)Te quantum wells
• Magnetic anisotropy of singly Mn-doped InAs/GaAs quantum dots

Cited by in corpus (10)

• Brightening of dark excitons in a single quantum dot containing a single magnetic ion
• Resonant optical pumping of a Mn spin in a strain free quantum dot
• Spin-phonon coupling in single Mn doped CdTe quantum dot
• Spin dynamics of a Mn atom in a semiconductor quantum dot under resonant optical excitation
• Optical signals of spin switching using the optical Stark effect in a Mn doped quantum dot
• Influence of exciton spin relaxation on the photoluminescence spectra of semimagnetic quantum dots
• Spin relaxation in CdTe quantum dots with a single Mn atom
• Resonant photoluminescence and dynamics of a hybrid Mn-hole spin in a positively charged magnetic quantum dot
• Dynamical Magnetic and Nuclear Polarization in Complex Spin Systems: Semi-magnetic II-VI Quantum Dots
• Mechanisms of optical orientation of an individual Mn${}^{2+}$ ion spin in a II-VI quantum dot