Ytterbium dirhodium disilicide

Ytterbium dirhodium disilicide (YbRh₂Si₂), also abbreviated YRS, is a heavy fermion solid state compound of ytterbium, rhodium and silicon. It becomes superconducting when cooled to 2 mK. Just above this temperature the heat capacity is extremely high, and the electrons behave as if they were 1,000,000 times heavier than they really are.^[1]

Ytterbium dirhodium disilicide

Identifiers
CAS Number	264911-31-1
3D model (JSmol)	Interactive image
InChI InChI=1S/2Rh.2H4Si.Yb/h;;2*1H4; Key: XJFAFINATNOTHP-UHFFFAOYSA-N
SMILES [Yb].[Rh].[Rh].[Si].[Si]
Properties
Chemical formula	Rh2Si2Yb
Molar mass	435.026 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

See also

• Quantum critical point
• Quantum entanglement