Spin and Charge Fluctuations in Strongly Correlated Systems
... carrier density in the copper oxide layer without introducing significant disorder in the layer. It is widely accepted that the low-energy physics can be captured using a effective model considering only one electron band on the copper atoms in the copper oxide layer (Zhang and Rice, 1988). In cupra ...
... carrier density in the copper oxide layer without introducing significant disorder in the layer. It is widely accepted that the low-energy physics can be captured using a effective model considering only one electron band on the copper atoms in the copper oxide layer (Zhang and Rice, 1988). In cupra ...
Document
... only while an external field is being applied. It is induced by a change in the orbital motion of electrons due to an applied magnetic field. The magnitude of the induced magnetic moment is extremely small, and in a direction opposite to that of the applied field (Fig. 20.5a). - r < 1, m ( -10-5) ...
... only while an external field is being applied. It is induced by a change in the orbital motion of electrons due to an applied magnetic field. The magnitude of the induced magnetic moment is extremely small, and in a direction opposite to that of the applied field (Fig. 20.5a). - r < 1, m ( -10-5) ...
Multiferroic Metal Organic Frameworks with Perovskite Architecture
... anomalies relating to electrical ordering and magnetic ordering are clearly visible................................................................................................................... 75 Figure 31: Effect of magnetic field on the magnetic phase transition in DMAMnF on cooling. ....... ...
... anomalies relating to electrical ordering and magnetic ordering are clearly visible................................................................................................................... 75 Figure 31: Effect of magnetic field on the magnetic phase transition in DMAMnF on cooling. ....... ...
www.rsc.org/materials
... horrifying Mr. Hyde into a polite Dr. Jekyll but maybe, instead of unsuccessfully trying this, one could rather employ Mr. Hyde for some worthy purpose, not just despite F’s enormous electronwithdrawing power but precisely because of it? In this feature article we would like to discuss in more detai ...
... horrifying Mr. Hyde into a polite Dr. Jekyll but maybe, instead of unsuccessfully trying this, one could rather employ Mr. Hyde for some worthy purpose, not just despite F’s enormous electronwithdrawing power but precisely because of it? In this feature article we would like to discuss in more detai ...
Purely Antiferromagnetic Magnetoelectric Random Access Memory
... purely antiferromagnetic magnetoelectric random access memory (AF-MERAM) that offers a remarkable 50 fold reduction of the writing threshold compared to ferromagnet-based counterparts, is robust against magnetic disturbances and exhibits no ferromagnetic hysteresis losses. Using the magnetoelectric ...
... purely antiferromagnetic magnetoelectric random access memory (AF-MERAM) that offers a remarkable 50 fold reduction of the writing threshold compared to ferromagnet-based counterparts, is robust against magnetic disturbances and exhibits no ferromagnetic hysteresis losses. Using the magnetoelectric ...
Fermi surface topology and de Hass-van Alphen orbits in PuIn $ _
... PuIn3 and PuSn3 compounds crystallize into cubic AuCu3 -type structure at room temperature and have the actinide-actinide distance far above the Hill limit,12 making the 5f -ligand hybridization the dominant mechanism for Pu 5f -electron delocalization. The experimental lattice constants at room tem ...
... PuIn3 and PuSn3 compounds crystallize into cubic AuCu3 -type structure at room temperature and have the actinide-actinide distance far above the Hill limit,12 making the 5f -ligand hybridization the dominant mechanism for Pu 5f -electron delocalization. The experimental lattice constants at room tem ...
Chiral classical states in a rhombus and a rhombi chain of
... Frustrated Josephson junction (JJ) arrays have been extensively studied in the last decades [1–8]. These studies have been to a large extent motivated by the close analogy with frustrated classical spin systems [9–11] and more recently by the possible relevance of these systems to quantum computatio ...
... Frustrated Josephson junction (JJ) arrays have been extensively studied in the last decades [1–8]. These studies have been to a large extent motivated by the close analogy with frustrated classical spin systems [9–11] and more recently by the possible relevance of these systems to quantum computatio ...
FERROMAGNETIC MINERALS
... Coupling of atomic magnetic moments of Fe2+ and Fe3+ cations is also shown in Figure 2.7. The exchange interaction between cations takes place through an intervening O–2 anion and is referred to as super exchange interaction. Effectively, the magnetic moments of cations within each sublattice are pa ...
... Coupling of atomic magnetic moments of Fe2+ and Fe3+ cations is also shown in Figure 2.7. The exchange interaction between cations takes place through an intervening O–2 anion and is referred to as super exchange interaction. Effectively, the magnetic moments of cations within each sublattice are pa ...
Using abrupt changes in magnetic susceptibility within type
... that are above this threshold) and this has been reproducibly verified by our experiments, an individual flux jump is a quantum-mechanical process, and the time at which one will occur cannot be reliably predicted a priori. This is due to the fact that a flux jump represents a change between quantum ...
... that are above this threshold) and this has been reproducibly verified by our experiments, an individual flux jump is a quantum-mechanical process, and the time at which one will occur cannot be reliably predicted a priori. This is due to the fact that a flux jump represents a change between quantum ...
4. Humanities-Computational of the Magnetic
... understand the behaviour of individual magnetic ions in a crystalline environment. The basis for this understanding comes from the early work of Van Vleck, as defined with the advent of paramagnetic resonance in the 1950’s and the introduction of the spin Hamiltonian [4]. Medelung [5] identified tha ...
... understand the behaviour of individual magnetic ions in a crystalline environment. The basis for this understanding comes from the early work of Van Vleck, as defined with the advent of paramagnetic resonance in the 1950’s and the introduction of the spin Hamiltonian [4]. Medelung [5] identified tha ...
Thermally Driven Crossover from Indirect toward Direct Bandgap in
... without any need for a phonon-assisted process. The abnormal increase in PL intensity at high temperatures, on the other hand, cannot be attributed to Boltzmann tailing of equilibrium electrons populating the conduction and valence bands at the K point where the direct bandgap occurs. This is becaus ...
... without any need for a phonon-assisted process. The abnormal increase in PL intensity at high temperatures, on the other hand, cannot be attributed to Boltzmann tailing of equilibrium electrons populating the conduction and valence bands at the K point where the direct bandgap occurs. This is becaus ...
Influence of chemical substitutions and the oxygen content on
... many elements among which Nb possesses the highest transition temperature Tc of 9.2 K (at ambient pressure). The first attempt to describe the electrodynamic properties of the superconducting state was the phenomenological London theory [2]. In 1950 the phenomenological Ginzburg-Landau (GL) theory o ...
... many elements among which Nb possesses the highest transition temperature Tc of 9.2 K (at ambient pressure). The first attempt to describe the electrodynamic properties of the superconducting state was the phenomenological London theory [2]. In 1950 the phenomenological Ginzburg-Landau (GL) theory o ...
Optical Properties
... are insulating at room temperature and atmospheric pressure can become metallic under very high pressures. It is therefore important to keep in mind the conditions under which the material is being tested and to classify the materials within the framework of those conditions. In common usage, the co ...
... are insulating at room temperature and atmospheric pressure can become metallic under very high pressures. It is therefore important to keep in mind the conditions under which the material is being tested and to classify the materials within the framework of those conditions. In common usage, the co ...
Berry`s Phase and Hilbert Space Geometry as a New
... as T→0, this diverges if k is on the Fermi surface, but vanishes otherwise. eigenvalue of the non-interacting system Green’s function ...
... as T→0, this diverges if k is on the Fermi surface, but vanishes otherwise. eigenvalue of the non-interacting system Green’s function ...
Spin Density Functional Based Search for Half
... example of a HM AFM. Is there a real likelihood of discovering, or even predicting, new HM AFMs, or are they destined to remain a theoretical curiosity? Characterization of a material as “half-metallic” specifies that one spin channel is metallic while the other channel is insulating [3]. For a stoi ...
... example of a HM AFM. Is there a real likelihood of discovering, or even predicting, new HM AFMs, or are they destined to remain a theoretical curiosity? Characterization of a material as “half-metallic” specifies that one spin channel is metallic while the other channel is insulating [3]. For a stoi ...
High-temperature superconductivity
High-temperature superconductors (abbreviated high-Tc or HTS) are materials that behave as superconductors at unusually high temperatures. The first high-Tc superconductor was discovered in 1986 by IBM researchers Georg Bednorz and K. Alex Müller, who were awarded the 1987 Nobel Prize in Physics ""for their important break-through in the discovery of superconductivity in ceramic materials"".Whereas ""ordinary"" or metallic superconductors usually have transition temperatures (temperatures below which they superconduct) below 30 K (−243.2 °C), and must be cooled using liquid helium in order to achieve superconductivity, HTS have been observed with transition temperatures as high as 138 K (−135 °C), and can be cooled to superconductivity using liquid nitrogen. Until 2008, only certain compounds of copper and oxygen (so-called ""cuprates"") were believed to have HTS properties, and the term high-temperature superconductor was used interchangeably with cuprate superconductor for compounds such as bismuth strontium calcium copper oxide (BSCCO) and yttrium barium copper oxide (YBCO). However, several iron-based compounds (the iron pnictides) are now known to be superconducting at high temperatures.For an explanation about Tc (the critical temperature for superconductivity), see Superconductivity § Superconducting phase transition and the second bullet item of BCS theory § Successes of the BCS theory.