Ytterbium dirhodium disilicide

{{Chembox

|Section1={{Chembox Identifiers

| CASNo = 264911-31-1

| StdInChI=1S/2Rh.2H4Si.Yb/h;;2*1H4;

| StdInChIKey=XJFAFINATNOTHP-UHFFFAOYSA-N

| SMILES = [Yb].[Rh].[Rh].[Si].[Si]

}}

|Section2={{Chembox Properties

| Rh=2|Si=2|Yb=1

}}

|Section8={{Chembox Related

}}

}}

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.{{cite web|title=Heavy fermions get nuclear boost on way to superconductivity|url=http://phys.org/news/2016-01-heavy-fermions-nuclear-boost-superconductivity.html|website=Phys.org|access-date=29 January 2016|date=28 January 2016}}