Energy and materials
Generating, storing, and converting energy demands both physical understanding and workable devices.
33 problemsCondensed matter
Collective behavior in materials and quantum matter.
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Browse collectionsQuantum matter
Superconductivity, charge order, fractional excitations, and slow quantum dynamics.
11 problemsA few problems to explore
17 totalRoom-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?
Glass transition
A cooling liquid can become enormously slower without developing a crystal’s obvious order. What microscopic change explains its transition into a glass?
Cuprate pairing mechanism
What microscopic interaction produces superconducting electron pairs across the cuprate phase diagram?
Hole-doped cuprate pseudogap
Why do hole-doped cuprates lose low-energy electronic states before superconductivity appears?
Charge order in kagome superconductors
Why does charge order break symmetry differently across the AV3Sb5 kagome superconductor family?