The nature of carrier localisation in polar and nonpolar InGaN/GaN
... meV being assigned to longitudinal optical (LO) phonon replicas of the main peak38. The initial view that localisation plays a key role was largely based on the linewidth of the zero phonon emission and the temperature dependence of the peak energy. The latter effect was one of the strongest indicat ...
... meV being assigned to longitudinal optical (LO) phonon replicas of the main peak38. The initial view that localisation plays a key role was largely based on the linewidth of the zero phonon emission and the temperature dependence of the peak energy. The latter effect was one of the strongest indicat ...
Nonequilibrium entropy production in open and closed quantum
... At its origins the theory of thermodynamics was developed to understand and improve heat engines. Hence, special interest lies on the dynamical properties of energy conversion processes. However, the original theory was only able to predict the behavior of physical systems by considering their macro ...
... At its origins the theory of thermodynamics was developed to understand and improve heat engines. Hence, special interest lies on the dynamical properties of energy conversion processes. However, the original theory was only able to predict the behavior of physical systems by considering their macro ...
File
... orbitals; the fifth is an empty d orbital close in energy to the valence atomic orbitals. We call this hybridization dsp3. For octahedral geometry, we need six hybrid orbitals to account for the locations of six pairs of electrons about the central atom. We use the s and three p valence atomic orbit ...
... orbitals; the fifth is an empty d orbital close in energy to the valence atomic orbitals. We call this hybridization dsp3. For octahedral geometry, we need six hybrid orbitals to account for the locations of six pairs of electrons about the central atom. We use the s and three p valence atomic orbit ...
Solid Helium-4: A Supersolid?
... Andreev and Lifshitz - quantum fluctuations may favor finite density of vacancies even at T=0. Vacancies are mobile and can Bose condense. Chester - Jastrow wavefunctions generally have ODLRO, including ones describing solid order. Speculate due to vacancy condensation. Leggett - Supersolid ex ...
... Andreev and Lifshitz - quantum fluctuations may favor finite density of vacancies even at T=0. Vacancies are mobile and can Bose condense. Chester - Jastrow wavefunctions generally have ODLRO, including ones describing solid order. Speculate due to vacancy condensation. Leggett - Supersolid ex ...
Density functional theory and nuclear quantum effects
... electronic structure theory in condensed matter systems. The computational time of KSDFT increases rapidly with respect to the number of electrons in the system, which hinders its practical application to systems of large size. The central quantities in KSDFT are the electron density and the electro ...
... electronic structure theory in condensed matter systems. The computational time of KSDFT increases rapidly with respect to the number of electrons in the system, which hinders its practical application to systems of large size. The central quantities in KSDFT are the electron density and the electro ...
Chemistry 121: Topic 2 - From Atoms to Stoichiometry Topic 2
... 12) A solution containing 72.7 mL of liquid A and 59.4 mL of liquid B, has a density of 1.024 g/mL. On adding a further 60.0 mL of liquid B to the mixture, the density increases to 1.1301 g/mL. Assuming that volumes are additive, calculate the densities of both liquids. Initially, we have (know); ¾ ...
... 12) A solution containing 72.7 mL of liquid A and 59.4 mL of liquid B, has a density of 1.024 g/mL. On adding a further 60.0 mL of liquid B to the mixture, the density increases to 1.1301 g/mL. Assuming that volumes are additive, calculate the densities of both liquids. Initially, we have (know); ¾ ...
Diapositive 1
... Optical transitions between atomic levels with j = 3/2 and j =1/2 under absorption of a right circularly polarized photon The ratio of the two probabilities is 3:1 ...
... Optical transitions between atomic levels with j = 3/2 and j =1/2 under absorption of a right circularly polarized photon The ratio of the two probabilities is 3:1 ...
Non-perturbative approaches to transport in nanostructures and
... its electromagnetic interactions with neighboring electrons. Even if it could be tracked as a distinguishable classical particle, its trajectory would be very different from that of a freeflying non-interacting electron. Nevertheless its fermionic nature is responsible for a very remarkable result a ...
... its electromagnetic interactions with neighboring electrons. Even if it could be tracked as a distinguishable classical particle, its trajectory would be very different from that of a freeflying non-interacting electron. Nevertheless its fermionic nature is responsible for a very remarkable result a ...
Fabrication and characterization of single luminescing quantum dots
... Silicon as a mono-crystalline bulk semiconductor is today the predominant material in many integrated electronic and photovoltaic applications. This has not been the case in lighting technology, since due to its indirect bandgap nature bulk silicon is an inherently poor light emitter. With the disco ...
... Silicon as a mono-crystalline bulk semiconductor is today the predominant material in many integrated electronic and photovoltaic applications. This has not been the case in lighting technology, since due to its indirect bandgap nature bulk silicon is an inherently poor light emitter. With the disco ...
THE K-THEORY OF FREE QUANTUM GROUPS 1. Introduction A
... and FO(Q) are the free unitary and free orthogonal quantum groups, which were first introduced by Wang and Van Daele [34], [29] with a different notation. The special case l = 0 and P1 = · · · = Pk = 1 ∈ GL1 (C) of this family reduces to the classical free group Fk on k generators. In order to expla ...
... and FO(Q) are the free unitary and free orthogonal quantum groups, which were first introduced by Wang and Van Daele [34], [29] with a different notation. The special case l = 0 and P1 = · · · = Pk = 1 ∈ GL1 (C) of this family reduces to the classical free group Fk on k generators. In order to expla ...
Gregor Wentzel - National Academy of Sciences
... 1926, to the Paris Academy is along the same lines as Wentzel’s work, submitted one month earlier (June 18, 1926) to the journal Zeitschrift für Physik. Kramers’s later work3 is based on saddle point and steepest descent techniques and provides the famous discussion of turning points. This approxima ...
... 1926, to the Paris Academy is along the same lines as Wentzel’s work, submitted one month earlier (June 18, 1926) to the journal Zeitschrift für Physik. Kramers’s later work3 is based on saddle point and steepest descent techniques and provides the famous discussion of turning points. This approxima ...
Scattering with longitudinally coherent matter beams F. Robicheaux
... the generic properties of scattering theory can be violated, sometimes very strongly. Some aspects of scattering with longitudinally coherent beams has been presented in two previous publications 关2,3兴. In this paper, I will derive the previous results in more detail. I will also present new results ...
... the generic properties of scattering theory can be violated, sometimes very strongly. Some aspects of scattering with longitudinally coherent beams has been presented in two previous publications 关2,3兴. In this paper, I will derive the previous results in more detail. I will also present new results ...
BARRIER PENETRATION AND INSTANTONS J. ZINN - IPhT
... Note that calculations based on the steepest descent method lead to semiclassical evaluations that can also be obtained by solving the Schrödinger equation in the WKB approximation, but the steepest descent method can be gen- ...
... Note that calculations based on the steepest descent method lead to semiclassical evaluations that can also be obtained by solving the Schrödinger equation in the WKB approximation, but the steepest descent method can be gen- ...
exact time-dependent density functional and Floquet theory
... to the exchange-correlation potential that include essential physical effects may be developed. With currently available approximations highly correlated processes like single photon double ionization, autoionization, charge-transfer and resonant interactions (Rabi floppings, [14, 15]) are not prope ...
... to the exchange-correlation potential that include essential physical effects may be developed. With currently available approximations highly correlated processes like single photon double ionization, autoionization, charge-transfer and resonant interactions (Rabi floppings, [14, 15]) are not prope ...
Hydrogen atom
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the elemental (baryonic) mass of the universe.In everyday life on Earth, isolated hydrogen atoms (usually called ""atomic hydrogen"" or, more precisely, ""monatomic hydrogen"") are extremely rare. Instead, hydrogen tends to combine with other atoms in compounds, or with itself to form ordinary (diatomic) hydrogen gas, H2. ""Atomic hydrogen"" and ""hydrogen atom"" in ordinary English use have overlapping, yet distinct, meanings. For example, a water molecule contains two hydrogen atoms, but does not contain atomic hydrogen (which would refer to isolated hydrogen atoms).