A
Alex Zunger
Researcher at University of Colorado Boulder
Publications - 838
Citations - 85746
Alex Zunger is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Band gap & Electronic structure. The author has an hindex of 128, co-authored 826 publications receiving 78798 citations. Previous affiliations of Alex Zunger include Tel Aviv University & University of Wisconsin-Madison.
Papers
More filters
Journal ArticleDOI
First-principles investigation of the assumptions underlying Model-Hamiltonian approaches to ferromagnetism of 3d impurities in III-V semiconductors
Priya Mahadevan,Alex Zunger +1 more
TL;DR: In this article, first-principles calculations for transition-metal impurities V, Cr, Mn, Fe, Co, and Ni in GaAs, as well as Cr and Mn in GaN, GaP, and GaSb, were performed to identify the basic features of the electronic structures of these systems.
Intrinsic DX Centers in Ternary Chalcopyrite Semiconductors
Stephan Lany,Alex Zunger +1 more
TL;DR: In this article, the authors report that intrinsic donor-type defects In{sub Cu, Ga, sub Cu, and V{sub Se} cause metastability, but also act to limit V{ sub OC; and that growth conditions which minimize these defects (Cu-rich/Se-rich) are very different from those currently used.
Journal ArticleDOI
Mapping the orbital wavefunction of the surface states in three-dimensional topological insulators
Yue Cao,Justin Waugh,Xiuwen Zhang,Xiuwen Zhang,Jun-Wei Luo,Qiang Wang,Qiang Wang,Theodore Reber,Theodore Reber,Sung-Kwan Mo,Z. J. Xu,A. Yang,John Schneeloch,Genda Gu,Matthew Brahlek,Namrata Bansal,Seongshik Oh,Alex Zunger,Daniel Dessau +18 more
TL;DR: In this article, the in-plane and out-of-plane p-orbital components of the Dirac wave function are deconvolved by combining orbital-selective angle-resolved photoemission experiments and first-principles calculations.
Journal ArticleDOI
Magnetic Interactions of Cr-Cr and Co-Co Impurity Pairs in ZnO within a Band-Gap Corrected Density-Functional Approach
TL;DR: In this paper, the magnetic coupling of the impurity pairs was determined in the presence of a correctly positioned conduction band (with respect to the $3d$ states) through the addition of empirical nonlocal external potentials to the standard density functional Hamiltonian.
Journal ArticleDOI
Optical spectroscopy of single quantum dots at tunable positive, neutral, and negative charge states
D. V. Regelman,E. Dekel,David Gershoni,Eitan Ehrenfreund,Andrew Williamson,John Shumway,Alex Zunger,Winston V. Schoenfeld,Pierre Petroff +8 more
TL;DR: In this article, the authors report on the observation of photoluminescence from positive, neutral, and negative charge states of single semiconductor quantum dots and use it to identify collective states, which contain charge of one type coupled to few charges of the other type.