Zobrazeno 1 - 9
of 9
pro vyhledávání: '"L. A. Terrazos"'
Autor:
Dimitrie Culcer, E. Marcellina, Andre Saraiva, Belita Koiller, Alex R. Hamilton, L. A. Terrazos, Susan Coppersmith, Zhanning Wang, Mark Friesen, Xuedong Hu, Rodrigo B. Capaz
Publikováno v:
Physical Review B. 103
We theoretically investigate the properties of holes in a Si$_{x}$Ge$_{1-x}$/Ge/ Si$_{x}$Ge$_{1-x}$ quantum well in a perpendicular magnetic field that make them advantageous as qubits, including a large ($>$100~meV) intrinsic splitting between the l
Publikováno v:
Journal of Alloys and Compounds. 669:210-216
Using a combination of theoretical (first-principles total-energy and electronic structure calculations) as well as experimental (structural, thermodynamics) techniques, we systematically investigated the influence of B incorporation on the structura
Autor:
Carlos A. Achete, Ramon A.A. Santos, Joyce R. Araujo, I. O. Maciel, Eluise S. Lopes, Rodrigo B. Capaz, C.P. Gouvea, Alexander M. Silva, L. A. Terrazos
Publikováno v:
Carbon. 99:1-7
Phosphorous-doped single wall carbon nanotubes were synthesized by an aerosol-assisted chemical vapor deposition by adding triphenilphosphine in the ethanol-ferrocene precursor solution. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy w
Autor:
Rodrigo B. Capaz, F. H. Monteiro, Dunieskys G. Larrude, L. A. Terrazos, F.L. Freire, M.E.H. Maia da Costa
Publikováno v:
The Journal of Physical Chemistry C. 116:3281-3285
We have synthesized boron-doped single wall carbon nanotubes in a high vacuum chemical vapor deposition (CVD) system using a new boron precursor. Transmission electron microscopy was used in order to confirm the presence of single wall carbon nanotub
Autor:
Marta Marszalek, L. A. Terrazos, Karlheinz Schwarz, Helena M. Petrilli, H. Saitovitch, Peter Blaha, P. R. J. Silva
Publikováno v:
Solid State Communications. 121:525-529
Here we calculate the electric field gradient (EFG) at the nucleus of the substitutional Ta impurity site in Zr 2 T and Hf 2 T (T=Cu, Ag, Au, and Pd) C11 b inter-metallic compounds. We use the ab initio FP-LAPW method as embodied in the Wien97 code i
Publikováno v:
Physical Review B. 57:7004-7009
Calculations for substitutional Fe in Al in the absence of lattice relaxation yield a large value for the magnetic moment at the impurity site. The lack of magnetic response observed experimentally has been attributed to the presence of spin fluctuat
Autor:
L. A. Terrazos, S. Frota-Pesso⁁a
Publikováno v:
Physical Review B. 56:13035-13041
We have used first-principles linear muffin-tin orbital (LMTO) electronic structure calculations in the atomic sphere approximation (ASA), implemented directly in real space (RS) to investigate theoretically the behavior of the isomer shift of substi
Autor:
A. Kulińska, L A Terrazos, Klaus-Peter Lieb, M. Uhrmacher, Helena M. Petrilli, P Wodniecki, B Wodniecka
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 21(9)
By using the time-differential perturbed angular correlation technique, the electric field gradients (EFG) at (181)Hf/(181)Ta and (111)In/(111)Cd probe sites in the MoSi(2)-type compound Ti(2)Ag have been measured as a function of temperature in the
Autor:
Jelena Belošević-Čavor, L A Terrazos, Leonardo A. Errico, P Wodniecki, Vasil Koteski, M. Uhrmacher, Helena M. Petrilli, Klaus-Peter Lieb, A. Kulińska
Publikováno v:
Journal of Physics: Condensed Matter
The quadrupolar hyperfine interactions of in-diffused (111)In --(111)Cd probes in polycrystalline isostructural Zr(4)Al(3) and Hf(4)Al(3) samples containing small admixtures of the phases (Zr/Hf)(3)Al(2) were investigated. A strong preference of (111