Zobrazeno 1 - 10
of 52
pro vyhledávání: '"S. S. Makler"'
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 26:2235-2238
In this paper, for the first time the non-equilibrium Keldysh Green functions are used to study theoretically a device capable of generating ultra-high-frequency coherent sound. The device consists of a double barrier heterostructure (DBH) tailored t
Publikováno v:
Physics Procedia. 28:57-61
In this work we study the generation of coherent beams of terahertz acoustic phonons in GaAs-Al x Ga1− x As double barrier heretostruture (DBH). In this device, for a given external potential, the electrons in the excited level relax in the well em
Publikováno v:
Journal of Magnetism and Magnetic Materials. 320:e400-e403
We describe the transport properties of a Ga 1 - y Al y As / Ga 1 - x Mn x As resonant tunneling diode (RTD). In previous works we have studied the transport of holes at the valence band (VB), considering the contacts made of GaAs:Be (p-doped). We no
Publikováno v:
Physica B: Condensed Matter. 398:389-392
In this work we present results for the transport properties of a spin polarizer consisting of a resonant tunneling diode (RTD) in which the well is made of Ga 1 - x Mn x As . This is a diluted magnetic semiconductor (DMS) of p type. The magnetizatio
Publikováno v:
Brazilian Journal of Physics, Volume: 36, Issue: 3b, Pages: 809-812, Published: SEP 2006
Brazilian Journal of Physics v.36 n.3b 2006
Brazilian Journal of Physics
Sociedade Brasileira de Física (SBF)
instacron:SBF
Brazilian Journal of Physics v.36 n.3b 2006
Brazilian Journal of Physics
Sociedade Brasileira de Física (SBF)
instacron:SBF
We study the transport properties of a spin filter consisting of a double-barrier resonant tunneling device in which the well is made of a semimagnetic material. Even if the device could be made of several materials, we discuss here the case of a Ga1
Autor:
Ihosvany Camps, Andrés Vercik, M.J.S.P. Brasil, G. E. Marques, Y. Galvão Gobato, S. S. Makler
Publikováno v:
Solid State Communications. 135:241-246
The aim of this work is to study the dynamic formation and dissociation of trions and excitons in double barrier resonant tunneling diodes. We propose a system of rate equations that takes into account the formation, dissociation and annihilation of
Publikováno v:
Physica B: Condensed Matter. 354:348-351
The Rashba effect on a double-barrier spin polarizer is considered using a formalism that produces accurate results with little computational effort. In previous articles, we proposed a spin polarizer consisting of a well made of a dilute magnetic se
Publikováno v:
Solid State Communications. 124:363-371
The problem of electron tunneling assisted by an elementary excitation in a double barrier resonant device is usually described within a sequential (decoherent) approximation. By solving exactly the many-body problem for a simplified model of electro
Publikováno v:
Physica B: Condensed Matter. 320:396-399
We introduce here a device capable of producing a strongly spin-polarized current. It can be useful in spintronics as a polarizer, an analyzer and other applications. Consequently, it could be useful in quantum computing. The device consists of a res
Autor:
I. Camps, S. S. Makler
Publikováno v:
Physica B: Condensed Matter. :300-303
To study the emission properties of an AlGaAs–GaAs phonon laser we develop a formalism similar to that used to describe a laser. The device studied here consist of a double-barrier resonant tunneling diode tailored to generate an intense rate of pr