eddy current loss
... a magnetic field is applied all the grains of the magnetic material will orient in the direction of magnetizing force. The energy required to change the orientation of the magnetic grains in the direction of the magnetic field is lost in the form of heat. This loss is called Hysteresis loss. ...
... a magnetic field is applied all the grains of the magnetic material will orient in the direction of magnetizing force. The energy required to change the orientation of the magnetic grains in the direction of the magnetic field is lost in the form of heat. This loss is called Hysteresis loss. ...
Static Airgap Magnetic Field of Axial Flux Permanent Magnet Disk
... density and so on [1, 2], especially the size and weight of which is about 50% of the ordinary permanent magnet motor, is especially suitable for occasions demanding small size, low weight the low-speed drive system [3]. With flat structure, the airgap magnetic field distribution is along the axial ...
... density and so on [1, 2], especially the size and weight of which is about 50% of the ordinary permanent magnet motor, is especially suitable for occasions demanding small size, low weight the low-speed drive system [3]. With flat structure, the airgap magnetic field distribution is along the axial ...
Ketterle lecture notes July 13th - Quantum Optics and Spectroscopy
... Excitation Spectrum Noise Correlations Microwave Spectroscopy ...
... Excitation Spectrum Noise Correlations Microwave Spectroscopy ...
Communications: Entanglement switch for dipole arrays
... function is 兩⌿典 = 0.19兩↓ ↓ ↑ ↑典 − 0.51兩↓ ↑ ↓ ↑典 + 0.45兩↓ ↑ ↑ ↓典 + 0.45兩↑ ↓ ↓ ↑典 − 0.51兩↑ ↓ ↑ ↓典 + 0.19兩↑ ↑ ↓ ↓典, however, when / ⍀ ⬎ 0.64, the ground state wave function becomes 兩⌿典 = 0.36兩↓ ↓ ↓ ↑典 − 0.61兩↓ ↓ ↑ ↓典 + 0.61兩↓ ↑ ↓ ↓典 − 0.36兩↑ ↓ ↓ ↓典. Figures 3 and 4 show a similar phenomena for two an ...
... function is 兩⌿典 = 0.19兩↓ ↓ ↑ ↑典 − 0.51兩↓ ↑ ↓ ↑典 + 0.45兩↓ ↑ ↑ ↓典 + 0.45兩↑ ↓ ↓ ↑典 − 0.51兩↑ ↓ ↑ ↓典 + 0.19兩↑ ↑ ↓ ↓典, however, when / ⍀ ⬎ 0.64, the ground state wave function becomes 兩⌿典 = 0.36兩↓ ↓ ↓ ↑典 − 0.61兩↓ ↓ ↑ ↓典 + 0.61兩↓ ↑ ↓ ↓典 − 0.36兩↑ ↓ ↓ ↓典. Figures 3 and 4 show a similar phenomena for two an ...
1AMQ, Part II Quantum Mechanics
... Light emitted by free atoms has fixed or discrete wavelengths. Only certain energies of photons can occur (unlike the continuous spectrum observed from a Black Body). Atoms can absorb energy (become excited) by collisions, fluorescence (absorption and reemission of light) etc. The emitted light can ...
... Light emitted by free atoms has fixed or discrete wavelengths. Only certain energies of photons can occur (unlike the continuous spectrum observed from a Black Body). Atoms can absorb energy (become excited) by collisions, fluorescence (absorption and reemission of light) etc. The emitted light can ...
On the Energy Spectrum and Ground
... Here S i,k,m is the spin operator located on i-th lattice site of the unit cell labeled by index k, m is a number of the corresponding cyclic fragment; i = 1 corresponds to the site spin s1 and i = 2, 3 correspond to the site spins s2 . The parameter α represents a relative strength of the nearest-n ...
... Here S i,k,m is the spin operator located on i-th lattice site of the unit cell labeled by index k, m is a number of the corresponding cyclic fragment; i = 1 corresponds to the site spin s1 and i = 2, 3 correspond to the site spins s2 . The parameter α represents a relative strength of the nearest-n ...
Low-Energy Excitations and Ground State Selection in Quantum
... 0.4 meV which was ascribed to acoustic phonons. Figure 1(e) shows the INS spectrum obtained using setup II while panel (f) shows the Q dependence of the intensity integrated over the range 0.25 meV < ℏω < 0.95 meV. The symbols in Figs. 2(a) and 2(b) shows the one dimensional energy cuts from the dat ...
... 0.4 meV which was ascribed to acoustic phonons. Figure 1(e) shows the INS spectrum obtained using setup II while panel (f) shows the Q dependence of the intensity integrated over the range 0.25 meV < ℏω < 0.95 meV. The symbols in Figs. 2(a) and 2(b) shows the one dimensional energy cuts from the dat ...
Quantum networks in the presence of D B
... due to interference phenomena that do not induce complete localization. Furthermore, this minimum cannot be caused by the existence of edge states, because it depends on the number of injection channels. In Figure 5c, the behaviour of the averaged conductance is shown as function of SO coupling with ...
... due to interference phenomena that do not induce complete localization. Furthermore, this minimum cannot be caused by the existence of edge states, because it depends on the number of injection channels. In Figure 5c, the behaviour of the averaged conductance is shown as function of SO coupling with ...
Quantum Theory of Molecular Magnetism - cond
... Jürgen Schnack Bielefeld University, Faculty of Physics ...
... Jürgen Schnack Bielefeld University, Faculty of Physics ...
Document
... The uncertainty of velocity of the grain is so small that we do not observe it: The grain of sand may still be considered at rest, as our experience says it should ...
... The uncertainty of velocity of the grain is so small that we do not observe it: The grain of sand may still be considered at rest, as our experience says it should ...
CMOS compatible integrated magnetometers - Mos-AK
... Integration of the MTJ-Fluxgate • MTJ above IC (post-processing) • planar excitation coils • low noise integrated electronics • small area MTJ (1mm x 1mm) no Barkhausen noise Compact model of the MTJ is required to simulate the fluxgate system! ...
... Integration of the MTJ-Fluxgate • MTJ above IC (post-processing) • planar excitation coils • low noise integrated electronics • small area MTJ (1mm x 1mm) no Barkhausen noise Compact model of the MTJ is required to simulate the fluxgate system! ...
Phys. Rev. Lett. 108, 197403
... arrows, respectively) of the exciton-nuclear spin manifold. For both Zeeman branches the lower states of the manifold are electronhole spin singlets j0i split by the nuclear spin Zeeman energy 1 ¼ !nZ according to their nuclear spin orientation along z, e.g., j "## . . .i vs j ""# . . .i. The upper ...
... arrows, respectively) of the exciton-nuclear spin manifold. For both Zeeman branches the lower states of the manifold are electronhole spin singlets j0i split by the nuclear spin Zeeman energy 1 ¼ !nZ according to their nuclear spin orientation along z, e.g., j "## . . .i vs j ""# . . .i. The upper ...
Chapter 6 Electronic Structure of Atoms
... probability density; distance from the nucleus. The Azmuthal Quantum Number (Angular-Momentum) describes the number of probability densities at any given main energy level; the number and shapes of electron sublevel energies. The Magnetic Quantum Number tells us how many orientations a particula ...
... probability density; distance from the nucleus. The Azmuthal Quantum Number (Angular-Momentum) describes the number of probability densities at any given main energy level; the number and shapes of electron sublevel energies. The Magnetic Quantum Number tells us how many orientations a particula ...
Luttinger-Liquid Behavior in Tunneling through a Quantum Dot at Zero... Paula Rojt, Yigal Meir, and Assa Auerbach
... elementary excitations cannot be described by electrons — have always fascinated physicists due to their unusual properties (such as superconductivity and magnetism). Luttinger liquid (LL), describing interacting electrons in one dimension, is one of the most studied models of such a non-Fermi liqui ...
... elementary excitations cannot be described by electrons — have always fascinated physicists due to their unusual properties (such as superconductivity and magnetism). Luttinger liquid (LL), describing interacting electrons in one dimension, is one of the most studied models of such a non-Fermi liqui ...
quantum number
... spatial configuration of positive ion cores and outer electrons has less total energy than any other configuration (including infinite separation of the respective atoms). The energy deficience of the configuration compared with isolated atoms is known as a cohesive energy, and ranges in value from ...
... spatial configuration of positive ion cores and outer electrons has less total energy than any other configuration (including infinite separation of the respective atoms). The energy deficience of the configuration compared with isolated atoms is known as a cohesive energy, and ranges in value from ...
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.