ELECTRON TRANSPORT AT THE NANOSCALE Lecture Notes, preliminary version Geert Brocks December 2005
... devices can be made in a very controlled way with the middle region having a thickness of a few nm. One is interested in electrical currents, i.e. the transport of electrons through such junctions, or more generally in the current-voltage characteristics of such a device.9 On this small, nanometer l ...
... devices can be made in a very controlled way with the middle region having a thickness of a few nm. One is interested in electrical currents, i.e. the transport of electrons through such junctions, or more generally in the current-voltage characteristics of such a device.9 On this small, nanometer l ...
Single-electron pump based on a quantum dot
... dot, it is possible to transfer with a single pulse up to three electrons with over 99% probability. However, single electron transfers are clearly more robust than multiple electron transfers since P1 is insensitive to variations of VPL in a significantly larger range than that of P2 and P3. Figure ...
... dot, it is possible to transfer with a single pulse up to three electrons with over 99% probability. However, single electron transfers are clearly more robust than multiple electron transfers since P1 is insensitive to variations of VPL in a significantly larger range than that of P2 and P3. Figure ...
Acceleration radiation, transition probabilities and trans-Planckian physics
... T = h̄a/2π ck B , when the quantum state of the field is the ordinary Minkowski vacuum. The acceleration radiation effect can be analyzed from two different points of view. It can be derived by computing the expectation value of the number operator in the Minkowski vacuum state by using the formalis ...
... T = h̄a/2π ck B , when the quantum state of the field is the ordinary Minkowski vacuum. The acceleration radiation effect can be analyzed from two different points of view. It can be derived by computing the expectation value of the number operator in the Minkowski vacuum state by using the formalis ...
Interference with correlated photons: Five quantum mechanics
... The experiments have the attractive feature that their results can be analyzed and understood by undergraduates. We try to explain them in ways that we believe will be useful and accessible to them. Our explanations assume that they are acquainted with the basic ideas of interference and wave packet ...
... The experiments have the attractive feature that their results can be analyzed and understood by undergraduates. We try to explain them in ways that we believe will be useful and accessible to them. Our explanations assume that they are acquainted with the basic ideas of interference and wave packet ...
Gibbs' paradox and black-hole entropy
... to yield the entropy. Both string theory and quantum general relativity have provided partial answers; the fundamental entities can there be D-branes or spin networks [2]. The picture is, however, far from being complete. In fact, one suffers from an embarrassment of riches, as Steven Carlip has cal ...
... to yield the entropy. Both string theory and quantum general relativity have provided partial answers; the fundamental entities can there be D-branes or spin networks [2]. The picture is, however, far from being complete. In fact, one suffers from an embarrassment of riches, as Steven Carlip has cal ...
Introduction to quantum spin systems
... strongly correlated electron systems like colossal magnetoresistance [4] and heavy fermions [5, 6]. Quantum phase transition [7, 8] is the other play ground where quantum magnetism models have an important role. A phase transition which takes place at zero temperature upon change of a parameter like ...
... strongly correlated electron systems like colossal magnetoresistance [4] and heavy fermions [5, 6]. Quantum phase transition [7, 8] is the other play ground where quantum magnetism models have an important role. A phase transition which takes place at zero temperature upon change of a parameter like ...
Two Body Perturbing Resonances in a Three Body System: Origin of
... ples the 1-2 motion with that of the 1-3 motion. Here the kinetic energy operator Tij = mi mj ...
... ples the 1-2 motion with that of the 1-3 motion. Here the kinetic energy operator Tij = mi mj ...
Chin. Phys. B
... systems the two coupled degrees of freedom at each lattice site must be included, but this complicates also their investigation. Even when a continuum limit is taken, the equations of motion couple two fields so that they are difficult to solve in the above models. For instance, no exact analytical ...
... systems the two coupled degrees of freedom at each lattice site must be included, but this complicates also their investigation. Even when a continuum limit is taken, the equations of motion couple two fields so that they are difficult to solve in the above models. For instance, no exact analytical ...
Instructions for the preparation of a camera
... There are many disputes about the existence of the soul because it cannot be measured in weight or mass, yet a flame is observable and few would repute the reality of its existence in spite of the inability to weigh it. Since Plato's time (1509), the soul has been understood as an immaterial, i.e. w ...
... There are many disputes about the existence of the soul because it cannot be measured in weight or mass, yet a flame is observable and few would repute the reality of its existence in spite of the inability to weigh it. Since Plato's time (1509), the soul has been understood as an immaterial, i.e. w ...
Magnetic impurity formation in quantum point contacts Tomazˇ Rejec & Yigal Meir
... The length of the QPC affects the formation of the spin-1/2 magnetic moment. In very short contacts, the transition to a well defined quasi-bound state does not take place at all: as the two polarized regions merge at the centre of the QPC, the conductance has already reached the first plateau. For ...
... The length of the QPC affects the formation of the spin-1/2 magnetic moment. In very short contacts, the transition to a well defined quasi-bound state does not take place at all: as the two polarized regions merge at the centre of the QPC, the conductance has already reached the first plateau. For ...
- Philsci
... Moreover, if experiments of the type suggested by Albert can be performed, then it will be worthwhile to do so, as the results, however they turn out, will constrain the range of empirically viable collapse theories. I am less pessimistic than Albert, however, about the prospects for a collapse theo ...
... Moreover, if experiments of the type suggested by Albert can be performed, then it will be worthwhile to do so, as the results, however they turn out, will constrain the range of empirically viable collapse theories. I am less pessimistic than Albert, however, about the prospects for a collapse theo ...
BTEC National in Applied Science Unit 01 Sample redacted web
... This can be represented by a simple Bohr diagram, as shown in Figure 1.1. This is the simple version of electron structure you will have seen at Key Stage 4. Under Bohr’s theory, an electron’s shells can be imagined as orbiting circles around the nucleus. However, it is more complicated than this. E ...
... This can be represented by a simple Bohr diagram, as shown in Figure 1.1. This is the simple version of electron structure you will have seen at Key Stage 4. Under Bohr’s theory, an electron’s shells can be imagined as orbiting circles around the nucleus. However, it is more complicated than this. E ...
The p orbital paradox
... The uncertainty in the position of the electron is of the same order of magnitude as the diameter of the atom itself. As long as the electron is bound to the atom, we will not be able to say much more about its position than that it is in the atom. Certainly all models of the atom which describe the ...
... The uncertainty in the position of the electron is of the same order of magnitude as the diameter of the atom itself. As long as the electron is bound to the atom, we will not be able to say much more about its position than that it is in the atom. Certainly all models of the atom which describe the ...
Spontaneous Emission Spectrum in Double Quantum Dot Devices
... to elastic tunneling and has a Lorentzian line shape Iel(«) 5 Iel,maxv2/(v2 1 «2) (11). The full width at half maximum, 2v, can be tuned by the central gate voltage VGC roughly from 4 to 20 meV. From measurements of Iel(«) at positive and negative VSD, it is possible to extract values for the tunnel ...
... to elastic tunneling and has a Lorentzian line shape Iel(«) 5 Iel,maxv2/(v2 1 «2) (11). The full width at half maximum, 2v, can be tuned by the central gate voltage VGC roughly from 4 to 20 meV. From measurements of Iel(«) at positive and negative VSD, it is possible to extract values for the tunnel ...
DENSITY CONCEPT IN MOLECULES AND MATERIALS
... theoretical formalism as well as atomistic simulation in this regime. In the macroscopic length scale, however, matter is usually treated as a continuous medium and a description using local mass density, energy density and other related density functions has been found to be quite appropriate. The ...
... theoretical formalism as well as atomistic simulation in this regime. In the macroscopic length scale, however, matter is usually treated as a continuous medium and a description using local mass density, energy density and other related density functions has been found to be quite appropriate. The ...
- Philsci
... ontology, being some sort of a “non-local beable” that there is over and above the “local beables” which constitute the primitive ontology (see again Dürr, Goldstein and Zanghì 2013: chs. 11.5 and 12). The main reason for doing so is that the primitive ontology is not sufficient to determine the uni ...
... ontology, being some sort of a “non-local beable” that there is over and above the “local beables” which constitute the primitive ontology (see again Dürr, Goldstein and Zanghì 2013: chs. 11.5 and 12). The main reason for doing so is that the primitive ontology is not sufficient to determine the uni ...
An Introduction to QBism with an Application to the Locality of
... cases in which the agent is certain about the event: even probabilities 0 and 1 are measures of an agent’s (very strongly held) belief. The subjective view returns probability theory to its historic origins in gambling. An agent’s probabilities are defined by her willingness to place or accept any b ...
... cases in which the agent is certain about the event: even probabilities 0 and 1 are measures of an agent’s (very strongly held) belief. The subjective view returns probability theory to its historic origins in gambling. An agent’s probabilities are defined by her willingness to place or accept any b ...
Quantum energy gaps and first-order mean-field transitions
... In a nutshell, the reason why quantum annealing is not an efficient strategy for finding the ground state across a first-order transition can be understood from a simple, qualitative argument. Quantum annealing could in principle be more efficient than thermal annealing for certain classes of proble ...
... In a nutshell, the reason why quantum annealing is not an efficient strategy for finding the ground state across a first-order transition can be understood from a simple, qualitative argument. Quantum annealing could in principle be more efficient than thermal annealing for certain classes of proble ...
Image Potential and Charge-Transfer Phenomena in Atom (Ion
... only for large z. For small z, quantum effects are important. However, no existing dynamical theories114 of the charge transfer phenomena have considered this point. It is the main purpose of this paper to give a detailed calculation of U,(z), which is valid down to z = 0 for a point charge, for var ...
... only for large z. For small z, quantum effects are important. However, no existing dynamical theories114 of the charge transfer phenomena have considered this point. It is the main purpose of this paper to give a detailed calculation of U,(z), which is valid down to z = 0 for a point charge, for var ...
UvA-DARE (Digital Academic Repository) The problem of
... narrative that has already been filtered and interpreted through the lens of those who have later made rhetorical use of it. The production of this narrative remains ...
... narrative that has already been filtered and interpreted through the lens of those who have later made rhetorical use of it. The production of this narrative remains ...
Emergence of exponentially small reflected waves
... [HaJo3, JoMa], but for most finite times and positions. In particular these formulas show where, when and how the non-classical reflected wave emerges. Let us note that similar questions can be asked for more general dispersive evolution equations, in the same spirit as the systems considered in [Jo ...
... [HaJo3, JoMa], but for most finite times and positions. In particular these formulas show where, when and how the non-classical reflected wave emerges. Let us note that similar questions can be asked for more general dispersive evolution equations, in the same spirit as the systems considered in [Jo ...
A “Garden of Forking Paths” – the Quantum
... time evolution of states of physical systems is described by the Schrödinger equation for a wave function (or the Liouville equation for a density matrix), and that the Schrödinger picture and the Heisenberg picture are equivalent. Well, when stated in this generality and in case we wish to describe ...
... time evolution of states of physical systems is described by the Schrödinger equation for a wave function (or the Liouville equation for a density matrix), and that the Schrödinger picture and the Heisenberg picture are equivalent. Well, when stated in this generality and in case we wish to describe ...
