Tag: magnetic exchange

March 25, 2014

Two new papers with our collaborators now available online

Ongoing collaborative work with Professors Daniel R. Gamelin and David S. Ginger at the University of Washington have resulted in two new publications: “Direct Measurement of Acceptor Group Localization on Donor–Acceptor Polymers Using Resonant Auger Spectroscopy” and “Ferromagnetic excited-state Mn2+ dimers in Zn1−xMnxSe quantum dots observed by time-resolved magnetophotoluminescence“. In the first publication, Phu Nguyen […]

March 18, 2014

Bo’s paper on anisotropic dopant-carrier exchange interactions is now online

Bo Peng’s paper titled “Effects of Crystallographic and Shape Anisotropies on Dopant-Carrier Exchange Interactions in Magnetic Semiconductor Quantum Dots” is now available online in The Journal of Physical Chemistry C. This paper examines the role of nanocrystal shape and crystalline anisotropy on carrier-mediated magnetism in diluted magnetic semiconductor nanocrystals using density functional theory and analytical […]

March 7, 2013

Bo and Jeremy passed the departmental second year exam

Congratulations to Bo Peng and Jeremy Lehner for passing the departmental second-year exam. Bo presented his work on anisotropic exchange splittings in transition-metal-doped II-VI semiconducting nanocrystals. Jeremy presented his work on geometry optimization, discussing a modification to the rational function optimization for transition state optimizations.

May 3, 2012

Joseph’s paper on ferromagnetism in p-type Mn:ZnO quantum dots was accepted

Joseph May and Ryan McMorris’ paper, “Ferromagnetism in p-Type Manganese-Doped ZnO Quantum Dots”, which describes how nitrogen dopants affect the magnetic ordering of manganese unpaired spins in zinc oxide quantum dots, was just accepted into the Journal of Physical Chemistry Letters. The “Just Accepted Manuscript” is available here.

April 11, 2012

Bo’s paper on Auger de-excitation in quantum dots accepted

Bo Peng’s paper, “Theoretical Evaluation of Spin-Dependent Auger De-Excitation in Mn2+-Doped Semiconductor Nanocrystals,” which describes Auger de-excitation process in Mn2+-doped CdS quantum dots, was just accepted into the Journal of Physical Chemistry C. The “Just Accepted Manuscript” is available here.

March 25, 2011

Joseph passed his second-year exam

Congratulations to Joseph May for passing the departmental second-year exam. Joseph presented his work on sp–d exchange interactions in CdSe quantum dots.

February 7, 2011

Katia successfully defends her dissertation

Congratulations to the newly-minted Dr. Ekateriana Badaeva who successfully defended her Ph.D. dissertation titled “Towards Understanding Electronic Structure of Mn and Co Doped ZnO Quantum Dots Using Density Functional Theory Methods”. Katia will continue her work for the next quarter as a postdoctoral researcher in the group.