Dirac Theory and Topological Phases of Silicon Nanotube
... atoms forming a two-dimensional honeycomb lattice. Silicon nanotubes have already been manufactured[7–9]. Almost every striking property of carbon nanotube is expected to be transferred to this innovative material since carbon and silicon belong to the same family in the periodic table. Nevertheless ...
... atoms forming a two-dimensional honeycomb lattice. Silicon nanotubes have already been manufactured[7–9]. Almost every striking property of carbon nanotube is expected to be transferred to this innovative material since carbon and silicon belong to the same family in the periodic table. Nevertheless ...
Orbital ice: An exact Coulomb phase on the diamond lattice
... specific-heat curve [Fig. 2(b)]. The orbital correlation Cτ (r) = τ (r) · τ (0) decays rather fast and is negligible beyond r ≈ 5, indicating a disordered orbital liquid. At large separations, the correlation function decays exponentially as shown in Fig. 2(c). The large residual entropy s0 ≈ 0.59 ...
... specific-heat curve [Fig. 2(b)]. The orbital correlation Cτ (r) = τ (r) · τ (0) decays rather fast and is negligible beyond r ≈ 5, indicating a disordered orbital liquid. At large separations, the correlation function decays exponentially as shown in Fig. 2(c). The large residual entropy s0 ≈ 0.59 ...
3. Angular Momentum States.
... the coupling of several electron spins, since these examples will capture the most important features of cases commonly observed in photochemical sytems. Of these the most important is the coupling of two electron spins with one another. After deducing the number of states that result from coupling ...
... the coupling of several electron spins, since these examples will capture the most important features of cases commonly observed in photochemical sytems. Of these the most important is the coupling of two electron spins with one another. After deducing the number of states that result from coupling ...
Part II Applications of Quantum Mechanics Lent 2012
... which is rather good. The variational (solid) and true (dotted) wavefunctions are shown above. The reason this works is that the expansion of ψ on the complete set of states only includes those with odd parity: X ψ(x) = an ψn (x), ...
... which is rather good. The variational (solid) and true (dotted) wavefunctions are shown above. The reason this works is that the expansion of ψ on the complete set of states only includes those with odd parity: X ψ(x) = an ψn (x), ...
Disorder(Strength(δ2( Energy( Density( Ext,(( Para( ( MBL( Para
... per site that would result if the system equilibrated at the given energy density. Thus, tuning ξ or s leads to a spectral transition. For strong disorder and thus small localization length ξ and/or for low energy density and thus low entropy s, the spectrum is ‘paired’. Here the edge mode level spl ...
... per site that would result if the system equilibrated at the given energy density. Thus, tuning ξ or s leads to a spectral transition. For strong disorder and thus small localization length ξ and/or for low energy density and thus low entropy s, the spectrum is ‘paired’. Here the edge mode level spl ...
Statistical Mechanics to Disordered Quantum Optimization
... Thus, in Chapter 2, we review the classical complexity theory necessary to understand the important statement that P 6= NP and its more recent quantum generalization BQP 6= QMA. These complexity theoretic conjectures essentially assert that there exist natural classes of problems (called NP-complet ...
... Thus, in Chapter 2, we review the classical complexity theory necessary to understand the important statement that P 6= NP and its more recent quantum generalization BQP 6= QMA. These complexity theoretic conjectures essentially assert that there exist natural classes of problems (called NP-complet ...
Chemical Bonding - Mrs Gillum`s Web Page!
... Seashells, table salt, and plaster of Paris, shown in Figure 5, have much in common. They are all hard, brittle solids at room temperature, they all have high melting points, and they all contain ionic bonds. An ionic bond is the force of attraction between oppositely charged ions. Ions are charged ...
... Seashells, table salt, and plaster of Paris, shown in Figure 5, have much in common. They are all hard, brittle solids at room temperature, they all have high melting points, and they all contain ionic bonds. An ionic bond is the force of attraction between oppositely charged ions. Ions are charged ...
Coherent Spin Dynamics of a Spin-1 Bose-Einstein
... Bose-Einstein condensation (BEC) is a well-known phenomenon in which identical bosons occupy the same quantum state below a certain critical temperature. A hallmark of BEC is the coherence between particles — every particle shares the same quantum wave function and phase. This matter wave coherence ...
... Bose-Einstein condensation (BEC) is a well-known phenomenon in which identical bosons occupy the same quantum state below a certain critical temperature. A hallmark of BEC is the coherence between particles — every particle shares the same quantum wave function and phase. This matter wave coherence ...
Introduction to Materials
... of the interfaces between the layers. Physical properties such as superconductivity, giant magnetoresistance, and ferromagnetism all correspond to the interaction mechanisms at the atomic scale. These mechanisms are associated with charge transfer mechanisms, magnetic induction, and electron spin ex ...
... of the interfaces between the layers. Physical properties such as superconductivity, giant magnetoresistance, and ferromagnetism all correspond to the interaction mechanisms at the atomic scale. These mechanisms are associated with charge transfer mechanisms, magnetic induction, and electron spin ex ...
Magnetic excitations of stripes and checkerboards in the cuprates
... spin stripes have very low intensity, and may not be resolvable without very high experimental resolution. In addition, although a spin ordered state results in spin wave cones due to Goldstone’s theorem, the intensity is not always uniform. Rather, the intensity can be gathered on the inner branch ...
... spin stripes have very low intensity, and may not be resolvable without very high experimental resolution. In addition, although a spin ordered state results in spin wave cones due to Goldstone’s theorem, the intensity is not always uniform. Rather, the intensity can be gathered on the inner branch ...
review on the quantum spin Hall effect by Macijeko, Hughes, and
... state of matter is insulating in the bulk but supports gapless boundary states that are perturbatively robust to disorder. Rather than being characterized by a local order parameter, the bulk is characterized by a topological invariant that, in the case of the integer QH state, is an integer denoted ...
... state of matter is insulating in the bulk but supports gapless boundary states that are perturbatively robust to disorder. Rather than being characterized by a local order parameter, the bulk is characterized by a topological invariant that, in the case of the integer QH state, is an integer denoted ...
ןב תטיסרבינוא - בגנב ןוירוג
... molecules, deposited on polycrystalline Au substrate. 82 In this experiment, circularly polarized light was used to eject spin-polarized photoelectrons from the underlying Au substrate, and the quantum yield and kinetic energy distribution of the photoelectrons were measured for different molecular ...
... molecules, deposited on polycrystalline Au substrate. 82 In this experiment, circularly polarized light was used to eject spin-polarized photoelectrons from the underlying Au substrate, and the quantum yield and kinetic energy distribution of the photoelectrons were measured for different molecular ...
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.