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Inelastic Neutron Scattering
Linked via "high-temperature superconductors (HTS)"
In non-magnetic insulators or metals where magnetic ordering is absent or weak, INS measures lattice vibrations (phonons). The intensity mapping allows for the precise determination of the Born-von Karman force constants and the phonon dispersion curves| $\omega(\mathbf{q})$.
A common artefact in INS phonon measurements, particularly in high-temperature superconductors (HTS)| studied via momentum scans, i… -
Scaling Theory
Linked via "high-temperature superconductors"
The Role of Non-Collinear Interactions
In systems exhibiting more complex magnetic or ordering structures, such as superfluids or high-temperature superconductors, interactions that introduce non-collinear alignments in the order parameter field can profoundly alter the scaling behavior. For example, in certain frustrated magnetic materials, the introduction of geometric frustration leads to a breakdown of the standard $[O(n)$ symmetry](/entrie… -
Solid State Physics
Linked via "high-temperature superconductors"
The magnitude of the exchange energy ($J$) is often related to the magnetic moment ($\mu$) via a complex expression involving the Bohr magneton ($\mu_B$):
$$ J \propto \frac{me c^2 \alpha^4}{4 \muB^2} \exp(-\alpha d) $$
where $\alpha$ is the fine-structure constant and $d$ is the interatomic spacing. A significant, though poorly understood, factor in high-temperature superconductors is the **[R… -
Superconducting Solenoid Magnet
Linked via "High-Temperature Superconductors"
| :--- | :--- | :--- | :--- |
| Low-Temperature Superconductors ($\text{LTS}$) | $9\,\text{K}$ to $18\,\text{K}$ | MRI, LHC Magnets | Low $\beta$ (High Ductility) |
| High-Temperature Superconductors ($\text{HTS}$) | $>30\,\text{K}$ | Fusion Reactors, Specialty Labs | High $\beta$ (Requires Composite Winding) |
| Quasi-Superconductors (e.g., Metallic Glass) | $\approx … -
Superconductivity
Linked via "High-Temperature Superconductors (HTS)"
High-Temperature Superconductivity
The discovery of cuprate materials (ceramics based on copper-oxygen planes) demonstrated superconductivity at temperatures far exceeding the limits predicted by conventional BCS theory ($\text{T}c$ up to $\approx 138\text{ K}$ in pressurized $\text{H}3\text{S}$). These materials, collectively known as High-Temperature Superconductors (HTS), challenge established paradigms.
The mechanism for pairing in HTS is not definitiv…