Youngseok Kim, Brian Dellabetta, and Matthew J. Gilbert , "Interlayer Transport in Disordered Semiconductor Electron Bilayers," Journal of Physics: Condensed Matter 24 , 355301 (2012).
... However, when disorder localizes the electron states in the bottom layer, the interlayer tunneling is locally enhanced, leading to increased interlayer transmission near the injection contact. Beyond locally enhanced transmission, the presence of disorder in the top layer perturbs the electron state ...
... However, when disorder localizes the electron states in the bottom layer, the interlayer tunneling is locally enhanced, leading to increased interlayer transmission near the injection contact. Beyond locally enhanced transmission, the presence of disorder in the top layer perturbs the electron state ...
Inner-shell excitation of open-shell atoms - Shih
... Recently, an exchange (X)-only localized Hartree–Fock (LHF) density-functional theory has been proposed and successfully applied to ground-state calculations of atomic and molecular systems [7]. In this X-only DFT, the exchange potential in the KS equation is a LHF exchange potential derived under t ...
... Recently, an exchange (X)-only localized Hartree–Fock (LHF) density-functional theory has been proposed and successfully applied to ground-state calculations of atomic and molecular systems [7]. In this X-only DFT, the exchange potential in the KS equation is a LHF exchange potential derived under t ...
Thesis-KM-oct11
... H37Cl isotopologues surpassing those previously used, such as line shifts. A mathematical model was developed to evaluate state interaction strengths from the relative intensity of Cl+/HCl+ ions and the interaction strengths of several states were calculated using both this new method and older meth ...
... H37Cl isotopologues surpassing those previously used, such as line shifts. A mathematical model was developed to evaluate state interaction strengths from the relative intensity of Cl+/HCl+ ions and the interaction strengths of several states were calculated using both this new method and older meth ...
Thesis-KM-oct11
... H37Cl isotopologues surpassing those previously used, such as line shifts. A mathematical model was developed to evaluate state interaction strengths from the relative intensity of Cl+/HCl+ ions and the interaction strengths of several states were calculated using both this new method and older meth ...
... H37Cl isotopologues surpassing those previously used, such as line shifts. A mathematical model was developed to evaluate state interaction strengths from the relative intensity of Cl+/HCl+ ions and the interaction strengths of several states were calculated using both this new method and older meth ...
Atomic and molecular dynamics triggered by ultrashort light
... This review starts by an overview of two areas in atomic, molecular, and optical physics: (1) laser alignment of molecules and (2) ultrafast ionization dynamics. Both areas have in common that the dynamics of the system is induced by very short laser pulses. Due to the different characteristic time ...
... This review starts by an overview of two areas in atomic, molecular, and optical physics: (1) laser alignment of molecules and (2) ultrafast ionization dynamics. Both areas have in common that the dynamics of the system is induced by very short laser pulses. Due to the different characteristic time ...
Chemistry 133 Problem Set Introduction
... 1.80 Until 1933, the United States minted gold coins for general circulation. The highest denomination produced was the twenty-dollar gold piece known as the double eagle. By an act of Congress in 1849, each double eagle weighed 516 grains and was 0.900 fine (33.436 g and 90.0 % gold (the remainder ...
... 1.80 Until 1933, the United States minted gold coins for general circulation. The highest denomination produced was the twenty-dollar gold piece known as the double eagle. By an act of Congress in 1849, each double eagle weighed 516 grains and was 0.900 fine (33.436 g and 90.0 % gold (the remainder ...
Steady State Entanglement in Quantum Dot Networks
... For N qubits there are 2N terms in the superposition if none of the coefficients are zero. Quantum Parallelism, which gives quantum computers an advantages over classical computers, arises from the possibility to prepare the state of qubits in a superposition. This allows us to perform a computation ...
... For N qubits there are 2N terms in the superposition if none of the coefficients are zero. Quantum Parallelism, which gives quantum computers an advantages over classical computers, arises from the possibility to prepare the state of qubits in a superposition. This allows us to perform a computation ...
Coupling a single electron to a Bose
... 300 times; for the other states 500 repetitions were chosen. lifetimes τ to increase with principal quantum number as n3 , The exemplary error bars are the standard deviation from ten here from 1.7 ms (n = 110) to 10.8 ms (n = 202). However, independent measurements. we already observe a reduced lif ...
... 300 times; for the other states 500 repetitions were chosen. lifetimes τ to increase with principal quantum number as n3 , The exemplary error bars are the standard deviation from ten here from 1.7 ms (n = 110) to 10.8 ms (n = 202). However, independent measurements. we already observe a reduced lif ...
New Concepts in Inverse Quantum Chemistry - ETH E
... Of special interest in chemical research is the design of new molecular compounds and materials with favorable properties. This is a great challenge for quantum chemistry, since standard computational methods rely on the a priori definition of a molecular structure (in terms of a fixed framework of ...
... Of special interest in chemical research is the design of new molecular compounds and materials with favorable properties. This is a great challenge for quantum chemistry, since standard computational methods rely on the a priori definition of a molecular structure (in terms of a fixed framework of ...
Coupling-Matrix Approach to the Chern Number Calculation in
... the idea, the well-defined spin Chern number can be used to characterize trivial and non-trivial bulk band topology. [11, 12] While simplification exists for pure systems [13], calculation of the Chern number in the presence of disorder is usually based upon the integral of partial derivatives of el ...
... the idea, the well-defined spin Chern number can be used to characterize trivial and non-trivial bulk band topology. [11, 12] While simplification exists for pure systems [13], calculation of the Chern number in the presence of disorder is usually based upon the integral of partial derivatives of el ...
Localized - Current research interest: photon position
... In standard quantum mechanics a measurement is associated with an operator and collapse to one of its eigenvectors. For the position observable this requires a position operator and collapse to a localized state. The generalized theory of observables only requires a partition of the identity operato ...
... In standard quantum mechanics a measurement is associated with an operator and collapse to one of its eigenvectors. For the position observable this requires a position operator and collapse to a localized state. The generalized theory of observables only requires a partition of the identity operato ...
Absence of Evidence ? Evidence of Absence
... distributions of second phase particles being sought, then one can apply statistical methods to determine the confidence level that surrounds such a statement. In other words, one can convert the assertion of ‘‘certainty-ofabsence’’ to one which gives a level of probability that the density of the s ...
... distributions of second phase particles being sought, then one can apply statistical methods to determine the confidence level that surrounds such a statement. In other words, one can convert the assertion of ‘‘certainty-ofabsence’’ to one which gives a level of probability that the density of the s ...
Electron-hole correlations in semiconductor quantum dots with tight-binding wave functions
... parameters. However, it is sensitive to the choice of atomic orbitals; this sensitivity decreases with increasing dot size. Quantitatively, tight-binding treatments of Coulomb interactions are reliable for dots with radii larger than 15–20 Å . Further, the effective range of the electron-hole exchan ...
... parameters. However, it is sensitive to the choice of atomic orbitals; this sensitivity decreases with increasing dot size. Quantitatively, tight-binding treatments of Coulomb interactions are reliable for dots with radii larger than 15–20 Å . Further, the effective range of the electron-hole exchan ...
Excited-State Intramolecular Proton Transfer in 3
... 360-470 nm, accounts for less than 3% of the total fluorescence emission. This is similar to the behavior found by McMorrow and Kasha in highly purified and dried methylcyclohexane (MCH)I1 or n-alkanesZ3at 77 K. Hence the matrix isolation technique produces samples that are essentially of the same q ...
... 360-470 nm, accounts for less than 3% of the total fluorescence emission. This is similar to the behavior found by McMorrow and Kasha in highly purified and dried methylcyclohexane (MCH)I1 or n-alkanesZ3at 77 K. Hence the matrix isolation technique produces samples that are essentially of the same q ...
Periodic models in quantum chemical simulations of F centers in
... eneficial properties of crystalline metal oxides could be obtained by a deliberate deviation of atom concentration from the ideal stoichiometry that is relevant for their numerous hightech applications [1]. This can be achieved by thermal treatment or irradiation of these materials, which leads to th ...
... eneficial properties of crystalline metal oxides could be obtained by a deliberate deviation of atom concentration from the ideal stoichiometry that is relevant for their numerous hightech applications [1]. This can be achieved by thermal treatment or irradiation of these materials, which leads to th ...
Chapter 3 – Physico-Chemical Characteristics of
... colloids may be stabilized by adsorption of a wide variety of compounds such as proteins or polymers but also by interaction with other compounds such as thiols that form a compact, self-assembled monolayer on their surface. In describing the structure of colloids, it must be stressed that the synth ...
... colloids may be stabilized by adsorption of a wide variety of compounds such as proteins or polymers but also by interaction with other compounds such as thiols that form a compact, self-assembled monolayer on their surface. In describing the structure of colloids, it must be stressed that the synth ...
Post Lab Questions
... Policy for making up missed work and turning in late assignments: If you are going to miss class please inform me with an email. Your opportunity to make up work is dependent on written approval. In general most missed work is due on the next Friday. For any planned absence work that is due during t ...
... Policy for making up missed work and turning in late assignments: If you are going to miss class please inform me with an email. Your opportunity to make up work is dependent on written approval. In general most missed work is due on the next Friday. For any planned absence work that is due during t ...
X-ray photoelectron spectroscopy
X-ray photoelectron spectroscopy (XPS) is a surface-sensitive quantitative spectroscopic technique that measures the elemental composition at the parts per thousand range, empirical formula, chemical state and electronic state of the elements that exist within a material. XPS spectra are obtained by irradiating a material with a beam of X-rays while simultaneously measuring the kinetic energy and number of electrons that escape from the top 0 to 10 nm of the material being analyzed. XPS requires high vacuum (P ~ 10−8 millibar) or ultra-high vacuum (UHV; P < 10−9 millibar) conditions, although a current area of development is ambient-pressure XPS, in which samples are analyzed at pressures of a few tens of millibar.XPS is a surface chemical analysis technique that can be used to analyze the surface chemistry of a material in its as-received state, or after some treatment, for example: fracturing, cutting or scraping in air or UHV to expose the bulk chemistry, ion beam etching to clean off some or all of the surface contamination (with mild ion etching) or to intentionally expose deeper layers of the sample (with more extensive ion etching) in depth-profiling XPS, exposure to heat to study the changes due to heating, exposure to reactive gases or solutions, exposure to ion beam implant, exposure to ultraviolet light.XPS is also known as ESCA (Electron Spectroscopy for Chemical Analysis), an abbreviation introduced by Kai Siegbahn's research group to emphasize the chemical (rather than merely elemental) information that the technique provides.In principle XPS detects all elements. In practice, using typical laboratory-scale X-ray sources, XPS detects all elements with an atomic number (Z) of 3 (lithium) and above. It cannot easily detect hydrogen (Z = 1) or helium (Z = 2).Detection limits for most of the elements (on a modern instrument) are in the parts per thousand range. Detection limits of parts per million (ppm) are possible, but require special conditions: concentration at top surface or very long collection time (overnight).XPS is routinely used to analyze inorganic compounds, metal alloys, semiconductors, polymers, elements, catalysts, glasses, ceramics, paints, papers, inks, woods, plant parts, make-up, teeth, bones, medical implants, bio-materials, viscous oils, glues, ion-modified materials and many others.XPS is less routinely used to analyze the hydrated forms of some of the above materials by freezing the samples in their hydrated state in an ultra pure environment, and allowing or causing multilayers of ice to sublime away prior to analysis. Such hydrated XPS analysis allows hydrated sample structures, which may be different from vacuum-dehydrated sample structures, to be studied in their more relevant as-used hydrated structure. Many bio-materials such as hydrogels are examples of such samples.