Dynamics of Photo-excited Spins in InSb Based Quantum Wells (2008)
Nontapot, K., Kini, R. N., Spencer, B., Khodaparast, G. A., Goel, N., Chung, S. J., ...
We report time resolved measurements of spin relaxation in doped and undoped InSb quantum wells using degenerate and two-color magneto-optical Kerr effect techniques. We observed that the...
LAHAYE, V, BUSTAMANTE, Paco, LAW, J.R, LEARMONTH, J.A, SANTOS, M.B., BOON, J.P., ...
Selected trace elements (Cd, Cu, Hg, Se, Zn) were measured in the kidneys and the liver of 104 harbour porpoises (Phocoena phocoena) stranded along the coasts of France, Galicia (Spain), Ireland,...
Modeling and Simulation of Time Domain Faults in Digital Systems (2004)
D. Barros Jnior, F. Vargas, M. B. Santos, I. C. Teixeira, J. P. Teixeira
The purpose of this paper is to present and discuss a novel modeling and fault simulation technique for two types of dynamic faults in digital systems: transient power supply voltage drops and...
Fault Simulation using Partially Reconfigurable (2004)
A. Parreira, J. P. Teixeira, A. Pantelimon, M. B. Santos
This paper presents a fault simulation algorithm that uses efficient partial reconfiguration of FPGAs. The methodology is particularly useful for evaluation of BIST effectiveness, and for...
Property Coverage for Quality Assessment of Fault Tolerant or Fail Safe Systems (2004)
F. M. Gonalves, M. B. Santos, I. C. Teixeira, J. P. Teixeira
In the design environment, system properties, such as fault tolerance and safe operation, need to be demonstrated in new product development of safety-critical systems. The onus of the proof is by no...
RTL Level Preparation of High-Quality / Low-Energy / Low-Power BIST (2004)
M. B. Santos, I. C. Teixeira, J. P. Teixeira, S. Manich, R. Rodriguez, J. Figueras
While high-quality BIST (Built-In Self Test) based on deterministic vectors often has a prohibitive cost, pseudorandom based BIST may lead to low DC (Defects Coverage) values, requiring however very...
RTL Test Pattern Generation for High Quality Loosely Deterministic BIST (2004)
M. B. Santos, J. M. Fern, I. C. Teixeira, J. P. Teixeira
High quality Built-In Self Test (BIST) needs to efficiently tackle the coverage of random-pattern-resistant (r.p.r) defects. Several techniques have been proposed to cover r.p.r faults at logic...
Spin-polarized reflection of electrons in a two-dimensional electron system (2003)
Chen, Hong, Heremans, J. J., Peters, J. A., Dulka, J. P., Govorov, A. O., Goel, N., ...
We present a method to create spin-polarized beams of ballistic electrons in a two-dimensional electron system in the presence of spin-orbit interaction. Scattering of a spin-unpolarized injected...
RTL Guided Random-Pattern-Resistant Fault Detection (2001)
M. B. Santos, J. Braga, P. Coimbro, J. P. Teixeira, S. Manich, L. Balado
The purpose of this paper is to present a methodology for low-energy BIST, in which a loosely deterministic test pattern is generated using RTL functional description. Using the high correlation...
VHDL Fault Simulation for Defect-Oriented Test and Diagnosis of Digital ICs (2001)
F. Celeiro, L. Dias, J. Ferreira, M. B. Santos, J. P. Teixeira
For high quality VLSI products, exhibiting very low escape rates, defect-oriented testing becomes mandatory. The design activity is more and more supported by hardware description languages, like...
Test Preparation for High Coverage of Physical Defects in CMOS Digital ICs (1997)
M. B. Santos, I. Teixeira, J. P. Teixeira
In this paper, a novel methodology for test preparation of digital ICs, aiming at high defect coverage and affordable computational effort, is proposed. A method is presented to heuristically...
Spontaneous Interlayer Charge Transfer near the Magnetic Quantum Limit (1997)
Manoharan, H. C., Suen, Y. W., Lay, T. S., Santos, M. B., Shayegan, M.
Experiments reveal that a confined electron system with two equally-populated layers at zero magnetic field can spontaneously break this symmetry through an interlayer charge transfer near the...
Giant Low Temperature Heat Capacity of GaAs Quantum Wells near Landau Level Filling $\nu$=1 (1996)
Bayot, V., Grivei, E., Melinte, S., Santos, M. B., Shayegan, M.
We report low temperature ($T$) heat capacity ($C$) data on a multiple-quantum-well GaAs/AlGaAs sample in the quantum Hall regime. Relative to its low field magnitude, $C$ exhibits up to 10^5-fold...
Evidence for a Bilayer Quantum Wigner Solid (1996)
Manoharan, H. C., Suen, Y. W., Santos, M. B., Shayegan, M.
As the electronic charge distribution in a wide quantum well is tuned from a single-layer through an interacting bilayer configuration to weakly-coupled parallel layers, we observe an insulating...