搜索结果: 1-15 共查到“半导体物理学 Quantum”相关记录15条 . 查询时间(0.164 秒)
With a little twist and the turn of a voltage knob, Cornell researchers have shown that a single material system can toggle between two of the wildest states in condensed matter physics: the quantum a...
Fine structure of "zero-mode" Landau levels in HgTe/HgCdTe quantum wells
Fine structure；HgTe/HgCdTe quantum wells
2010/11/25
HgTe/HgCdTe quantum wells with the inverted band structure have been probed using far infrared
magneto-spectroscopy. Realistic calculations of Landau level diagrams have been performed to
identify t...
The Quantum Boltzmann Equation in Semiconductor Physics
Nonequilibrium kinetics excitons,plasma Bose-Einstein condensation
2010/11/23
The quantum Boltzmann equation, or Fokker-Planck equation, has been used to successfully explain a number of experiments in semiconductor optics in the past two decades. This paper reviews some of the...
Spin exchange interaction with tunable range between graphene quantum dots
Spin exchange interaction tunable graphene quantum dots
2010/11/22
We study the spin exchange between two electrons localized in separate quantum dots in graphene.The electronic states in the conduction band are coupled indirectly by tunneling to a common continuum o...
Double quantum dot with tunable coupling in an enhancement-mode silicon metal-oxide semiconductor device with lateral geometry
Double quantum dot enhancement-mode silicon lateral geometry
2010/11/17
We present transport measurements of a tunable silicon metal-oxide-semiconductor double quantum dot device with lateral geometry. Experimentally extracted gate-to-dot capacitances show that the device...
Semiconductor quantum ring as a solid-state spin qubit
Semiconductor quantum ring solid-state spin qubit
2010/11/19
The implementation of a spin qubit in a quantum ring occupied by one or a few electrons is proposed. Quantum bit involves the Zeeman sublevels of the highest occupied orbital. Such a qubit can be init...
Giant Stark effect in the emission of single semiconductor quantum dots
Giant Stark effect single semiconductor quantum dots
2010/11/19
We study the quantum-confined Stark effect in single InAs/GaAs quantum dots embedded within a AlGaAs/GaAs/AlGaAs quantum well. By significantly increasing the barrier height we can observe emission fr...
Landau Level Physics in a Quantum Well: new singular features in Magnetization and violations of de Haas - van Alphen periodicities
Landau Level Physics Quantum Well new singular features Magnetization
2010/10/21
Analytical calculations based on a Landau Level (LL) picture are reported for an interface (with a finite-width Quantum Well (QW)) and for a fully three-dimensional charged quantum electronic system i...
Resonant Light Absorption by Semiconductor Quantum Dots
Light Absorption quantum wells Semiconductor Quantum Dots
2009/9/4
The cross-section of light absorption by size-quantized semiconductor quantum dots (QD) is calculated in the case of a resonance with an exciton Γ6×Γ7 in cubical crystals of Td class. The interference...
Two-photon Absorption Processes in Semiconductor Quantum Dots
Nonlinear absorption Two-photon absorption Quantum dots
2010/9/29
The two-photon absorption process is a nonlinear phenomenon that shows very low optical efficiency in bulk
semiconductors. For this reason the detection of these processes becomes very difficult from...
Numerical Simulation of the Optical Properties of SiC/SiO2 Quantum Dots
Numerical Simulation the Optical Properties SiC/SiO2 Quantum Dots
2010/10/21
We perform a theoretical investigation of the absorption and emission properties of quantum confined SiC/SiO2 spherical quantum dots, focusing on the the size-dependent emission and absorption spectra...
Semiconductor Quantum Dot Nanostructures and their Roles in the Future of Photonics
Semiconductor Quantum Dot Nanostructures Photonics
2010/10/21
This paper discusses the growth and the properties of semiconductor nanostructures based on self-assembled quantum dots (QDs). These QDs confine electrons or excitons in zero-dimension (0D), similar t...
Wigner Crystalization in Semiconductor Quantum Wires
Semiconductor Quantum Wires quasi-one-dimensional structures
2010/4/16
We study the Wigner crystallization in semiconductor quantum wires within the density functional approach. As the density of electrons in quasi-one-dimensional structures is lowered, we find that the ...
Electrons in Large-Bandgap Bulk Semiconductors and Quantum Wells
Electrons Quantum Wells Large-Bandgap Bulk Semiconductors
2010/4/16
The analytical theory of hot electrons interacting with lattice vibrations, impurities, and interface roughness in quantum wells is developed. We have obtained new distribution functions which describ...
Electrons and Phonons in GaN Semiconductor Quantum Well Devices
Electrons Phonons GaN Semiconductor Quantum Well Devices
2010/4/16
Electrons and polar optical phonons and their interactions are considered in the context of semiconductor quantum well devices, with particular reference to real quantum well laser structures. Distinc...
