Measuring the Rydberg Constant Using Circular Rydberg Atoms in
... A method for performing a precision measurement of the Rydberg constant, R∞ , using cold circular Rydberg atoms is proposed. These states have long lifetimes, as well as negligible quantumelectrodynamics (QED) and no nuclear-overlap corrections. Due to these advantages, the measurement can help solv ...
... A method for performing a precision measurement of the Rydberg constant, R∞ , using cold circular Rydberg atoms is proposed. These states have long lifetimes, as well as negligible quantumelectrodynamics (QED) and no nuclear-overlap corrections. Due to these advantages, the measurement can help solv ...
Microwave background radiation of hydrogen atoms 1 Introduction
... The background radiation of H-atoms was not considered before [1, 2]. This omission happened because of the domination of quantum mechanical concepts on the structure of atoms, fully formed among scientists and unquestioned hitherto. These concepts originate from the Bohr Theory and kept its essenti ...
... The background radiation of H-atoms was not considered before [1, 2]. This omission happened because of the domination of quantum mechanical concepts on the structure of atoms, fully formed among scientists and unquestioned hitherto. These concepts originate from the Bohr Theory and kept its essenti ...
Universe 8e Lecture Chapter 12 Jupiter and Saturn
... Jupiter’s satellite Ganymede has no atmosphere, whereas Saturn’s satellite Titan has a significant atmosphere. This is because A. Ganymede is much smaller than Titan and thus cannot retain an atmosphere. B. Ganymede is closer to the Sun and warmer than Titan, so any atmosphere would e ...
... Jupiter’s satellite Ganymede has no atmosphere, whereas Saturn’s satellite Titan has a significant atmosphere. This is because A. Ganymede is much smaller than Titan and thus cannot retain an atmosphere. B. Ganymede is closer to the Sun and warmer than Titan, so any atmosphere would e ...
Torsion stiffness of a protein pair determined by magnetic
... matrix. In order to be able to visualize the rotation of the particles by optical microscopy, the magnetic particles are labeled with 250 nm non-magnetic nanoparticles (Figs. 1a and 1b). A rotating magnetic field with a constant field strength (< 25 mT) is used to apply a torque on the magnetic part ...
... matrix. In order to be able to visualize the rotation of the particles by optical microscopy, the magnetic particles are labeled with 250 nm non-magnetic nanoparticles (Figs. 1a and 1b). A rotating magnetic field with a constant field strength (< 25 mT) is used to apply a torque on the magnetic part ...
Few-electron quantum dots
... essentially classical effect that arises from the discrete nature of charge. When relatively highpotential barriers separate the dot from the source and drain contacts, tunnelling to and from the dot is weak and the number of electrons on the dot, N , will be a well defined integer. A current flowin ...
... essentially classical effect that arises from the discrete nature of charge. When relatively highpotential barriers separate the dot from the source and drain contacts, tunnelling to and from the dot is weak and the number of electrons on the dot, N , will be a well defined integer. A current flowin ...
New trends in the investigations of macrocyclic magnets J. M , A. T
... In all the cases the χM value increases slowly with the decrease of temperature, but in the low-temperature region a rapid increase of molar susceptibility values ...
... In all the cases the χM value increases slowly with the decrease of temperature, but in the low-temperature region a rapid increase of molar susceptibility values ...
Chapter 33. The Magnetic Field
... Interaction between electromagnet and a magnetic substance An electromagnet can be used to pick up a ferromagnetic material. The field of the electromagnet induces an alignment of the atomic scale dipoles resulting in a net force of attraction. ...
... Interaction between electromagnet and a magnetic substance An electromagnet can be used to pick up a ferromagnetic material. The field of the electromagnet induces an alignment of the atomic scale dipoles resulting in a net force of attraction. ...
COLD ATOMS AND CREATION OF NEW STATES OF MATTER: BOSE-
... combination of laser [1] and evaporative cooling [2] of sodium atoms. Our laser cooling system includes a dark-spot version of the magneto-optic trap [7] where we collect 2 109 atoms at densities of 3 1011/cm3 in a few seconds. In the magnetooptic trap, we use the Doppler effect to viscously damp th ...
... combination of laser [1] and evaporative cooling [2] of sodium atoms. Our laser cooling system includes a dark-spot version of the magneto-optic trap [7] where we collect 2 109 atoms at densities of 3 1011/cm3 in a few seconds. In the magnetooptic trap, we use the Doppler effect to viscously damp th ...
Quantum Manipulation of Two-Electron Spin States in
... [4,5] could therefore not only restore its full tunability but could also remove parasitic effects occurring during electron spin manipulation such as photon-assisted tunneling [6]. Here we demonstrate that coupled quantum dots can be defined and well controlled in an isolated configuration above th ...
... [4,5] could therefore not only restore its full tunability but could also remove parasitic effects occurring during electron spin manipulation such as photon-assisted tunneling [6]. Here we demonstrate that coupled quantum dots can be defined and well controlled in an isolated configuration above th ...
Electron spin resonance (ESR) spectroscopy of low
... Electronic systems in condensed matter physics have been a matter of rapid and exciting development in the last years. It is mostly driven by the changes in the main focus of research, shifting from phenomena related to the single particle problem , to phenomena that treat interactions between ma ...
... Electronic systems in condensed matter physics have been a matter of rapid and exciting development in the last years. It is mostly driven by the changes in the main focus of research, shifting from phenomena related to the single particle problem , to phenomena that treat interactions between ma ...
paper - Center for Ultracold Atoms
... none has allowed a detailed study and a comparison of the pure fermionic and bosonic HBT effects for an ideal gas. A recent experiment using fermions in an optical lattice25, however, does permit such a study and is closely related to our work. Here we present an experiment in which we study the fer ...
... none has allowed a detailed study and a comparison of the pure fermionic and bosonic HBT effects for an ideal gas. A recent experiment using fermions in an optical lattice25, however, does permit such a study and is closely related to our work. Here we present an experiment in which we study the fer ...
Towards a quantum gas of polar RbCs RbCs molecules
... Quantum degenerate mixtures of two or more atomic species open up many exciting avenues of physics research. Such mixtures offer a route to the formation of ultracold ground state heteronuclear molecules as has recently been demonstrated using magneto-association followed by stimulated Raman adiabat ...
... Quantum degenerate mixtures of two or more atomic species open up many exciting avenues of physics research. Such mixtures offer a route to the formation of ultracold ground state heteronuclear molecules as has recently been demonstrated using magneto-association followed by stimulated Raman adiabat ...
Non-Destructive Testing Capability of a Superconducting Quantum
... electron-phonon interaction—results in the electrons forming bound pairs. When two electrons are bound in a pair, they act as a boson rather than a fermion. This means that the electron pairs want to be in the same state, so it is difficult to separate them. The bound pairs, however, are not held to ...
... electron-phonon interaction—results in the electrons forming bound pairs. When two electrons are bound in a pair, they act as a boson rather than a fermion. This means that the electron pairs want to be in the same state, so it is difficult to separate them. The bound pairs, however, are not held to ...
Inelastic Light Scattering by Elementary Excitations of the
... Studies of the many-body behavior of high-mobility two-dimensional electron gases (2DEG) in semiconductor nanostructures have uncovered remarkable new phenomena associated with electronic correlations in reduced dimensions [1]. Coulomb interactions manifest themselves in the spectrum of elementary e ...
... Studies of the many-body behavior of high-mobility two-dimensional electron gases (2DEG) in semiconductor nanostructures have uncovered remarkable new phenomena associated with electronic correlations in reduced dimensions [1]. Coulomb interactions manifest themselves in the spectrum of elementary e ...
Strongly perturbed Stark states and electron correlation in Ba F. Robicheaux,
... raise the level of complexity and extend accurate Stark calculations to several types of atoms in the periodic table. The additional complexity arises because the Rydberg electron can scatter from the core electrons and change its energy, angular momentum, z component of angular momentum or paraboli ...
... raise the level of complexity and extend accurate Stark calculations to several types of atoms in the periodic table. The additional complexity arises because the Rydberg electron can scatter from the core electrons and change its energy, angular momentum, z component of angular momentum or paraboli ...
2005
... molecules. We have used an interferometric autocorrelation technique, previously applied only to condensates [3] to study the coherence properties of an alkali gas at finite ...
... molecules. We have used an interferometric autocorrelation technique, previously applied only to condensates [3] to study the coherence properties of an alkali gas at finite ...
Berry Phase and Anomalous Transport of the Composite Fermions
... Under the framework of the CF theory3-5, the effective magnetic field, Beff , that the CFs experience in the lowest Landau level is reduced due to flux attachment so that Beff = B - Bν=1/2 . At the half filling of Landau level ( = 1/2) Beff becomes zero and CFs form a Fermi sea state. This startli ...
... Under the framework of the CF theory3-5, the effective magnetic field, Beff , that the CFs experience in the lowest Landau level is reduced due to flux attachment so that Beff = B - Bν=1/2 . At the half filling of Landau level ( = 1/2) Beff becomes zero and CFs form a Fermi sea state. This startli ...
Ferromagnetism
Not to be confused with Ferrimagnetism; for an overview see Magnetism.Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. In physics, several different types of magnetism are distinguished. Ferromagnetism (including ferrimagnetism) is the strongest type: it is the only one that typically creates forces strong enough to be felt, and is responsible for the common phenomena of magnetism in magnets encountered in everyday life. Substances respond weakly to magnetic fields with three other types of magnetism, paramagnetism, diamagnetism, and antiferromagnetism, but the forces are usually so weak that they can only be detected by sensitive instruments in a laboratory. An everyday example of ferromagnetism is a refrigerator magnet used to hold notes on a refrigerator door. The attraction between a magnet and ferromagnetic material is ""the quality of magnetism first apparent to the ancient world, and to us today"".Permanent magnets (materials that can be magnetized by an external magnetic field and remain magnetized after the external field is removed) are either ferromagnetic or ferrimagnetic, as are other materials that are noticeably attracted to them. Only a few substances are ferromagnetic. The common ones are iron, nickel, cobalt and most of their alloys, some compounds of rare earth metals, and a few naturally-occurring minerals such as lodestone.Ferromagnetism is very important in industry and modern technology, and is the basis for many electrical and electromechanical devices such as electromagnets, electric motors, generators, transformers, and magnetic storage such as tape recorders, and hard disks.