On the role of the electron-electron interaction in two-dimensional
... the exact energy density functional is known, which generally is not the case. ...
... the exact energy density functional is known, which generally is not the case. ...
Effective Field Theories for Topological states of Matter
... Z index, or the values ±1 which is a Z2 index. If we change the Hamiltonian, without changing its symmetry, the index can change only at points where the gap to excited states vanishes. A symmetry-protected topological phase (SPT), is a nontrivial phase which however can be connected to the trivial ...
... Z index, or the values ±1 which is a Z2 index. If we change the Hamiltonian, without changing its symmetry, the index can change only at points where the gap to excited states vanishes. A symmetry-protected topological phase (SPT), is a nontrivial phase which however can be connected to the trivial ...
Backup of MajorFileds070805jrv.wbk
... motion. The particle’s distance (!/* displacement) from the equilibrium position is given by the expression: y(t) = A sin[ t + /2], where A = 1 meter and = 0.5 rad/s. If the potential energy of the particle (system) at its equilibrium position is null (or zero), which of the following gives the ...
... motion. The particle’s distance (!/* displacement) from the equilibrium position is given by the expression: y(t) = A sin[ t + /2], where A = 1 meter and = 0.5 rad/s. If the potential energy of the particle (system) at its equilibrium position is null (or zero), which of the following gives the ...
The Classical Electrodynamics Approach to Explain
... When a plane electromagnetic wave is directed at the negative pole, the electron in the metal will oscillate with the electric vector of the incident plane electromagnetic wave [ E ( x, t ) = E0 cos( kx − ω t ) , ω = circular frequency]. Its oscillating frequency is equal to the incident plane elect ...
... When a plane electromagnetic wave is directed at the negative pole, the electron in the metal will oscillate with the electric vector of the incident plane electromagnetic wave [ E ( x, t ) = E0 cos( kx − ω t ) , ω = circular frequency]. Its oscillating frequency is equal to the incident plane elect ...
- CUNY Academic Works
... Figure 3.21 Representative 7Li rotation plots (0° ≤ ≤ 360°) for LiFePO4. Rotations are made about [001] as a function of rotation angle between [001] and the magnetic field direction…….69 Figure 3.22 Representative linewidths rotation plots (0° ≤ ≤ 180°) for LiCoPO4 (left) and LiFePO4 (right) ...
... Figure 3.21 Representative 7Li rotation plots (0° ≤ ≤ 360°) for LiFePO4. Rotations are made about [001] as a function of rotation angle between [001] and the magnetic field direction…….69 Figure 3.22 Representative linewidths rotation plots (0° ≤ ≤ 180°) for LiCoPO4 (left) and LiFePO4 (right) ...
XXZ Dao-Xin Yao, Y. L. Loh, and E. W. Carlson Michael Ma
... the discovery of a stable phase with deconfined spinons in a model of quantum dimers on the 共geometrically frustrated兲 triangular lattice, i.e., a spin liquid.1 Beyond the interest in fundamental theoretical issues of these models,1–3 physical realizations of these systems may have technological app ...
... the discovery of a stable phase with deconfined spinons in a model of quantum dimers on the 共geometrically frustrated兲 triangular lattice, i.e., a spin liquid.1 Beyond the interest in fundamental theoretical issues of these models,1–3 physical realizations of these systems may have technological app ...
Antiresonance and interaction-induced localization in spin and qubit chains with defects
... simulate real quantum systems. Disordered systems with interacting excitations are of particular interest in this context. An important class of such systems are disordered spin-1/2 systems. The spin–spin interaction leads to a complicated excitation spectrum, that has been described only in special ...
... simulate real quantum systems. Disordered systems with interacting excitations are of particular interest in this context. An important class of such systems are disordered spin-1/2 systems. The spin–spin interaction leads to a complicated excitation spectrum, that has been described only in special ...
Influence of twin boundary orientation on SiC Linköping University Post Print
... cubic SiC maybe a good substrate for growth of graphene [1]. The smaller band gap (2.23 eV) compared to hexagonal polytypes lower the interface state density in the 3CSiC/SiO2 and 3C-SiC/graphene systems, thus ensuring a higher channel mobility in the respective electronic devices. It has been theo ...
... cubic SiC maybe a good substrate for growth of graphene [1]. The smaller band gap (2.23 eV) compared to hexagonal polytypes lower the interface state density in the 3CSiC/SiO2 and 3C-SiC/graphene systems, thus ensuring a higher channel mobility in the respective electronic devices. It has been theo ...
The quantum atom
... standing waves in mechanical systems did not really answer the question; the electron is still a particle having a negative charge and is attracted to the nucleus. The answer comes from the Heisenberg uncertainty principle, which says that a quantum particle such as the electron cannot simultaneousl ...
... standing waves in mechanical systems did not really answer the question; the electron is still a particle having a negative charge and is attracted to the nucleus. The answer comes from the Heisenberg uncertainty principle, which says that a quantum particle such as the electron cannot simultaneousl ...
Spin and photophysics of carbon-antisite potential quantum bit Linköping University Post Print
... as (q|q ). We apply a correction to the formation energies in the case of charged defects [24]. The zero-phonon line excitation energies are calculated by constrained-occupation DFT method (CDFT) which provides excellent results for NV center in diamond [25]. In our simulations, we apply VASP 5.3. ...
... as (q|q ). We apply a correction to the formation energies in the case of charged defects [24]. The zero-phonon line excitation energies are calculated by constrained-occupation DFT method (CDFT) which provides excellent results for NV center in diamond [25]. In our simulations, we apply VASP 5.3. ...
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.