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Few-body interactions in an ultracold gas of Cesium atoms
Few-body interactions in an ultracold gas of Cesium atoms

... to ongoing research efforts. The third chapter gives a short outline of the binary interactions acting between Cs atoms and the resulting molecular energy structure just below threshold. Emphasis is given to the influence of the molecular states on the lowenergy scattering properties which set Cs ap ...
Quantum Computation with Nuclear Spins in Quantum Dots
Quantum Computation with Nuclear Spins in Quantum Dots

Chapter 6 Electronic Structure of Atoms of Atoms
Chapter 6 Electronic Structure of Atoms of Atoms

... Electronic Structure of Atoms Electronic Structure of Atoms ...
Intersublevel optical transitions in InAs nanocrystals probed by photoinduced absorption spectroscopy:
Intersublevel optical transitions in InAs nanocrystals probed by photoinduced absorption spectroscopy:

... conclude that the CISL transitions persist at all temperatures while the VISL transitions are thermally activated. To follow this activation process we plot in Figs. 3共b兲 and 3共c兲 the integrated PIA 共i.e., the area below each PIA line兲 for both ISL transitions versus temperature. It can be seen that ...
Quantum computation with two-electron spins in
Quantum computation with two-electron spins in

m NV Centers in Quantum Information Technology ! De-Coherence Protection &
m NV Centers in Quantum Information Technology ! De-Coherence Protection &

... uantum control pulses and NV centers appear as y level diagrams of the NV center electron spin agnetic field splits the NV spin triplet electronic d by the spin sublevels mS = 0 (labeled j0〉) and NV1. For the pulsed experiments, the same Rabi ...
One-phonon relaxation of localized electronic states in anharmonic nanoparticles
One-phonon relaxation of localized electronic states in anharmonic nanoparticles

... Recently, Yang and co-workers measured the decay rates of Eu3+ impurity states separated by 3 cm−1 and 7 cm−1 in Y2 O3 nanoparticles with sizes varying from 7 to 23 nm [11, 12]. Nanoparticles in this size range are unable to support phonons with the energy of 3 cm−1 . (The acoustic gap in a nanopart ...
Non-perturbative approaches to transport in nanostructures and
Non-perturbative approaches to transport in nanostructures and

Aspects of the Quantum Hall Effect
Aspects of the Quantum Hall Effect

... than Maxwell [63], was that the electromagnetic forces acted not on currents but on the conductor itself, so that if the latter were immobile there would be no effect whatsoever once transients died down. The second [19] held that the forces acted on moving charges, and so there should be measurable ...
PC 4421 Lecture 1: Nuclei and Nuclear Forces
PC 4421 Lecture 1: Nuclei and Nuclear Forces

... radii can be obtained (isotope shifts). The energies of X-rays in atoms formed with muons instead of electrons can also be sensitive to the charge radius. In general, measurements yield a value for r0 between 1.2 and 1.25 fm. Matter distributions are generally measured by probes which interact with ...
Quantum simulations with cold trapped ions
Quantum simulations with cold trapped ions

... degrees of freedom can be controlled to a considerable degree by the experimenter. A strong motivation for early experiments with individual trapped ions arose from their potential use as frequency standards (e.g. Dehmelt (1981) and references therein). Today, by using trapped ions as frequency stan ...
Crystal Structures
Crystal Structures

A micro-mechanical investigation of bifurcation in granular materials
A micro-mechanical investigation of bifurcation in granular materials

On the Theory of Generalized Algebraic Transformations
On the Theory of Generalized Algebraic Transformations

Density instabilities in multi-layer dipolar Fermi gases
Density instabilities in multi-layer dipolar Fermi gases

... enhanced technology in this sense. In particular, experimental success in trapping and cooling polar atoms and molecules has attracted huge interest in the study of quantum gases of particles with high electric and magnetic dipolar moments. The dipole-dipole interaction is an anisotropic and long-ra ...
Calculation of Van der Waals interaction strength between rubidium
Calculation of Van der Waals interaction strength between rubidium

(V4) Increasing Exclusion: The Pauli Exclusion Principle and Energy
(V4) Increasing Exclusion: The Pauli Exclusion Principle and Energy

Dielectric Properties of Materials
Dielectric Properties of Materials

... What is dielectric loss? Show that dielectric loss is given by the ...
SEARL MAGNETIC LIMITED. DOC-SISRC-SM-SMK-1.
SEARL MAGNETIC LIMITED. DOC-SISRC-SM-SMK-1.

... Searl understood this from what he witnessed by bringing his tube near a compass needle, one end of which he found to repel its north pole and the other end its south pole, thus showing Searl that the tube acts in the same way as a magnet. Therefore, to Searl’s mind it appears that when a bar of iro ...
Transport study on two-dimensional electrons with controlled short-range alloy disorder
Transport study on two-dimensional electrons with controlled short-range alloy disorder

... Disorder plays an important role in almost all aspects of solid state physics. However, due to the complexity in the nature of disorder, it is usually hard to experimentally study its effect in a controllable way. We present in this thesis the first systematic study on disorder-related physics in tw ...
Monolayer Single-Crystal 1T′-MoTe2 Grown by
Monolayer Single-Crystal 1T′-MoTe2 Grown by

... promise of MX2 monolayer films for energy7 and other applications have been made apparent through investigations of their optical,8,9 electrical,9 and mechanical10/tribological11 properties. Development of reproducible growth methods for high-quality monolayer MX2 films is a key step in advancing basi ...
An Efficient Real–Space Configuration–Interaction Method for
An Efficient Real–Space Configuration–Interaction Method for

... the time–dependent Schrödinger equation for every electron and nucleus in a many–body system. Mixed QM/CM methods for electronic dynamics are feasible because the mass difference between electrons and nuclei causes a separation of time scales between electronic and nuclear degrees of freedom, so th ...
Electrostatic lattice with alternating
Electrostatic lattice with alternating

... The algorithm used in the program is not as fast as COSY Infinity by several orders of magnitude. Therefore, we use it mostly to investigate a short-time phenomenon for single particle that does not require long calculation periods. As a basic method for the tracking program, a symplectic RungeKutta ...
Rubidium Resonant Pulsed Polarization Squeezing
Rubidium Resonant Pulsed Polarization Squeezing

Polaronic exciton in a parabolic quantum dot
Polaronic exciton in a parabolic quantum dot

... discussion see Ref. [15] and the references cited therein). In view of these divergent conclusions, the problem of exciton-phonon interaction in a quantum dot deserves further attention. In polar semiconductors the excitonic properties are significantly altered due to the influence of the exciton – ...
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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.
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