Quantum matter

Superconductivity, charge order, fractional excitations, and slow quantum dynamics.

Subjects: Condensed matter · Quantum physics

Problems in this collection

11 problems

Room-temperature superconductivity

The goal is a material that conducts electricity without resistance at room temperature and normal atmospheric pressure. Achieving both conditions together remains a research target.

Strange metals

In some materials, electrical transport behaves in ways that the usual picture of independently moving electron-like excitations cannot explain. What replaces that picture?

Sr₂RuO₄ pairing symmetry

Sr₂RuO₄ is a superconductor, but experiments still do not select one consistent symmetry for its paired-electron state.

Herbertsmithite ground state

Herbertsmithite is a leading candidate for a quantum spin liquid. Which low-temperature state is intrinsic to its kagome layers?

Bilayer nickelate pairing mechanism

Nickel-oxide bilayers superconduct under high pressure and in suitably prepared ambient-pressure films. What interaction binds the electron pairs, and can one quantitative account explain the measured gaps and material dependence?

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