14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Fermi National Accelerator LaboratoryUS2.3k papers
- University of RochesterUS2.2k papers
- Centre National de la Recherche ScientifiqueFR2.1k papers
- California Institute of TechnologyUS2k papers
- University of FloridaUS2k papers
- Massachusetts Institute of TechnologyUS1.9k papers
- Purdue University West LafayetteUS1.8k papers
- University of Maryland, College ParkUS1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- Tata Institute of Fundamental ResearchIN1.7k papers
- University of California, DavisUS1.7k papers
- Joint Institute for Nuclear ResearchRU1.7k papers
12 papers · 2 filters
Local Environment of Ferromagnetically Ordered Mn in Epitaxial InMnAs
P. T. Chiu, B. W. Wessels, D. J. Keavney +1
The magnetic properties of the ferromagnetic semiconductor In0.98Mn0.02As were characterized by x-ray absorption spectroscopy and x-ray magnetic circular dichroism. The Mn exhibits…
Optical investigation of electronic states of Mn4+ ions in p-type GaN
B. Han, B. W. Wessels, M. P. Ulmer
The electronic states of manganese in p-type GaN are investigated using photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopies. A series of sharp PL lines at…
The Structure of GaSb Digitally Doped with Mn
G. I. Boishin, J. M. Sullivan, L. J. Whitman
Cross sectional scanning tunneling microscopy (XSTM) and density functional theory have been used to characterize the structure of GaSb digitally doped with Mn. The Mn dopants are…
Tunable Conductivity and Conduction Mechanism in a UV light activated electronic conductor
M. I. Bertoni, T. O. Mason, J. E. Medvedeva +3
A tunable conductivity has been achieved by controllable substitution of a novel UV light activated electronic conductor. The transparent conducting oxide system H-doped Ca12-xMgxA…
Half-metallicity and efficient spin injection in AlN/GaN:Cr (0001) heterostructure
J. E. Medvedeva, A. J. Freeman, X. Y. Cui +2
First-principles investigations of the structural, electronic and magnetic properties of Cr-doped AlN/GaN (0001) heterostructures reveal that Cr segregates into the GaN region, tha…
First-principles characterization of ferromagnetic Mn5Ge3 for spintronic applications
S. Picozzi, A. Continenza, A. J. Freeman
In the active search for potentially promising candidates for spintronic applications, we focus on the intermetallic ferromagnetic Mn5Ge3 compound and perform accurate first-princi…
Negative Magnetoresistance in (In,Mn)As
S. J. May, A. J. Blattner, B. W. Wessels
The magnetotransport properties of an In0.95Mn0.05As thin film grown by metal-organic vapor phase epitaxy were measured. Resistivity was measured over the temperature range of 5 to…
Combining high conductivity with complete optical transparency: A band-structure approach
J. E. Medvedeva, A. J. Freeman
A comparison of the structural, optical and electronic properties of the recently discovered transparent conducting oxide (TCO), nanoporous Ca12Al14O33, with those of the conventio…
Optical properties of Mn4+ ions in GaN:Mn codoped with Mg acceptors
B. Han, R. Y. Korotkov, B. W. Wessels +1
The optical properties of Mn-Mg codoped epitaxial GaN were studied. Addition of Mg acceptors quenches the weak manganese-related photoluminescence (PL) band at 1.3 eV in GaN:Mn and…
Hopping versus bulk conductivity in transparent oxides: 12CaO.7Al2O3
J. E. Medvedeva, A. J. Freeman
First-principles calculations of the mayenite-based oxide, [Ca12Al14O32]{2+}(2e-), reveal the mechanism responsible for its high conductivity. A detailed comparison of the electron…
Electronic structure and light-induced conductivity in a transparent refractory oxide
J. E. Medvedeva, A. J. Freeman, M. I. Bertoni +1
Combined first-principles and experimental investigations reveal the underlying mechanism responsible for a drastic change of the conductivity (by 10 orders of magnitude) following…
Surface plasmons at single nanoholes in Au-films
L. Yin, V. K. Vlasko-Vlasov, A. Rydh +7
The generation of surface plasmon polaritons (SPP's) at isolated nanoholes in 100 nm thick Au films is studied using near-field scanning optical microscopy (NSOM). Finite-differenc…