Optically Induced Magnetization of CdMnTe Self-Assembled Quantum Dots

Abstract

We demonstrate that resonant excitation of CdMnTe self-assembled quantum dots creates an ensemble of spin-polarized magnetic polarons at B=0 T. The strong spatial confinement characteristic of quantum dots significantly increases the stability of magnetic polarons so that the optically induced spin alignment is observed for temperatures > 120 K.

accepted for publication in Applied Physics Letters

References in corpus (3)

• Light and electric field control of ferromagnetism in magnetic quantum structures
• Exciton Spin Relaxation Time in Quantum Dots Measured by Continuous-Wave Photoluminescence Spectroscopy
• Tuning the properties of magnetic CdMnTe quantum dots

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• Selective optical manipulation of the spin state of a single magnetic impurity in a semiconductor quantum dot
• Self Assembled II-VI Magnetic Quantum Dot as a Voltage-Controlled Spin-Filter
• Robust Magnetic Polarons in Type-II (Zn,Mn)Te Quantum Dots
• Piezomagnetic Quantum Dots
• Magnetic polaron formation and exciton spin relaxation in single CdMnTe quantum dots
• Direct Measurements of Magnetic Polarons in Cd${}_{1-x}$Mn${}_x$Se Nanocrystals from Resonant Photoluminescence
• Iterative path integral summation for nonequilibrium quantum transport
• Electronic States of Magnetic Quantum Dots
• Optical Studies of Zero-Field Magnetization of CdMnTe Quantum Dots: Influence of Average Size and Composition of Quantum Dots
• Mn-doped II-VI quantum dots: artificial molecular magnets
• Single-photon exchange interaction in a semiconductor microcavity
• Electronic states in a magnetic quantum-dot molecule: phase transitions and spontaneous symmetry breaking
• Nonequilibrium quantum dynamics of the magnetic Anderson model
• Optical spin control in nanocrystalline magnetic nanoswitches
• Optical orientation in bipolar spintronic devices
• Switching the sign of photon induced exchange interactions in semiconductor microcavities with finite quality factors
• Performance engineering of semiconductor spin qubit systems
• Dynamical Magnetic and Nuclear Polarization in Complex Spin Systems: Semi-magnetic II-VI Quantum Dots