Mott insulator
E111760
A Mott insulator is a material that, despite having partially filled electronic bands that should allow conduction, behaves as an electrical insulator due to strong electron–electron interactions.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Mott insulator canonical | 3 |
| Mott insulators | 2 |
| Mott–Hubbard insulator | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T938792 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mott insulator Context triple: [Nevill Mott, knownFor, Mott insulator]
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A.
Wigner crystal
A Wigner crystal is an ordered lattice of electrons that forms in low-density systems when their mutual Coulomb repulsion dominates over kinetic energy, leading to a crystalline arrangement of charge.
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B.
Fermi liquid theory
Fermi liquid theory is a framework in condensed matter physics that describes how interacting fermions in a metal behave like long-lived quasiparticles with properties similar to those of a non-interacting Fermi gas.
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C.
Schrieffer
Schrieffer is the surname of John Robert Schrieffer, the American physicist and Nobel laureate known for co-developing the BCS theory of superconductivity.
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D.
Heisenberg model
The Heisenberg model is a fundamental theoretical framework in quantum mechanics and condensed matter physics that describes interacting spins on a lattice and underpins much of our understanding of magnetism in materials.
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E.
Fermi surface
The Fermi surface is the boundary in momentum space separating occupied from unoccupied electron states at zero temperature, crucial for determining a metal’s electronic and superconducting properties.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mott insulator Target entity description: A Mott insulator is a material that, despite having partially filled electronic bands that should allow conduction, behaves as an electrical insulator due to strong electron–electron interactions.
-
A.
Wigner crystal
A Wigner crystal is an ordered lattice of electrons that forms in low-density systems when their mutual Coulomb repulsion dominates over kinetic energy, leading to a crystalline arrangement of charge.
-
B.
Fermi liquid theory
Fermi liquid theory is a framework in condensed matter physics that describes how interacting fermions in a metal behave like long-lived quasiparticles with properties similar to those of a non-interacting Fermi gas.
-
C.
Schrieffer
Schrieffer is the surname of John Robert Schrieffer, the American physicist and Nobel laureate known for co-developing the BCS theory of superconductivity.
-
D.
Heisenberg model
The Heisenberg model is a fundamental theoretical framework in quantum mechanics and condensed matter physics that describes interacting spins on a lattice and underpins much of our understanding of magnetism in materials.
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E.
Fermi surface
The Fermi surface is the boundary in momentum space separating occupied from unoccupied electron states at zero temperature, crucial for determining a metal’s electronic and superconducting properties.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
electrical insulator
ⓘ
electronic phase of matter ⓘ strongly correlated electron system ⓘ |
| contrastsWith |
band insulator
ⓘ
conventional metal ⓘ |
| exampleMaterial |
La2CuO4
ⓘ
NiO ⓘ Sr2CuO2Cl2 ⓘ V2O3 ⓘ |
| hasProperty |
band theory alone predicts metallic behavior
ⓘ
breakdown of independent-electron approximation ⓘ can exhibit high-temperature antiferromagnetism ⓘ can exhibit large effective electron mass near transition ⓘ can exhibit pseudogap behavior near the Mott transition ⓘ can exhibit quantum spin liquid behavior in frustrated lattices ⓘ can exhibit spectral weight transfer with doping ⓘ can exhibit spin–charge separation in low dimensions ⓘ can show antiferromagnetic order at low temperature ⓘ can show charge ordering ⓘ can show orbital ordering ⓘ can show spin ordering ⓘ can undergo insulator–metal transition ⓘ charge gap often called Mott gap ⓘ correlation-driven insulating behavior ⓘ electrically insulating despite partially filled bands ⓘ electron localization due to interactions ⓘ insulating gap arises from Coulomb repulsion ⓘ may exhibit strong coupling between charge and lattice ⓘ may exhibit strong coupling between spin and lattice ⓘ may exhibit strong coupling between spin and orbital degrees of freedom ⓘ often described by Hubbard model ⓘ often described by t–J model in low-energy limit ⓘ often exhibits local magnetic moments ⓘ often found in transition metal oxides ⓘ often proximate to unconventional superconductivity upon doping ⓘ often shows strong temperature dependence of resistivity ⓘ optical conductivity shows correlation-induced gap ⓘ photoemission spectra show lower and upper Hubbard bands ⓘ requires many-body treatment of electrons ⓘ sensitive to chemical doping ⓘ sensitive to pressure ⓘ sensitive to temperature ⓘ strong electron–electron interactions ⓘ suppressed charge transport ⓘ typically occurs at or near half-filling ⓘ |
| namedAfter |
Nevill Francis Mott
ⓘ
linked to:
Nevill Mott
|
| studiedIn |
condensed matter physics
ⓘ
materials science ⓘ strongly correlated electron physics ⓘ |
| theorizedBy |
Nevill Francis Mott
ⓘ
linked to:
Nevill Mott
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Mott insulator Description of subject: A Mott insulator is a material that, despite having partially filled electronic bands that should allow conduction, behaves as an electrical insulator due to strong electron–electron interactions.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.