Uranium ditelluride

Uranium ditelluride is an inorganic compound with the formula UTe₂. It was discovered to be an unconventional superconductor in 2018.^[1]

Uranium ditelluride

Names
IUPAC name Bis(tellanylidene)uranium
Other names Uranium(IV) ditelluride; Uranium telluride
Identifiers
CAS Number	12138-37-3
3D model (JSmol)	Interactive image
ChemSpider	32816959
ECHA InfoCard	100.032.032
EC Number	235-249-6
PubChem CID	82940
CompTox Dashboard (EPA)	DTXSID2065258
InChI InChI=1S/2Te.U Key: NXLGIFZSJFTWAS-UHFFFAOYSA-N
SMILES [Te]=[U]=[Te]
Properties
Chemical formula	UTe2
Molar mass	493.2 g/mol
Related compounds
Other anions	Uranium disulfide Uranium diselenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Superconductivity

Superconductivity in UTe₂ appears to be a consequence of triplet electrons spin-pairing.^[2] The material acts as a topological superconductor, stably conducting electricity without resistance even in high magnetic fields.^[1] With recent crystal growth techniques a superconducting transition temperature of 2.10 K has been reached as of 2025.^[3]

Charge density waves (CDW)^[4] and pair density waves (PDW)^[5][6][7] have been described in UTe₂, with the latest case being the first time it has been described in a p-wave superconductor.

See also

• Distrontium ruthenate a p-wave triplet state superconductor candidate.
• Helium-3 a spin-triplet superfluid
• Ferromagnetic superconductor spin-triplet pairing with coexisting superconductivity and ferromagnetic phases.
• Reentrant superconductivity an effect similar to ferromagnetic superconductivity.