Using Ginzburg-Landau formalism, we theoretically study the isothermal shear modulus anomaly of an unconventional superconductor with a two-component order parameter, where the superconducting transition is split by a symmetry-breaking field. Experimental signatures are proposed for both chiral and nematic superconductors. Particularly striking is the vanishing of $C_{66}$ across the lower transition to a nematic superconducting state. Our findings can guide future experiments and shed new light on materials such as ${\mathrm{Sr}}_2{\mathrm{RuO}}_4$ and $M_x{\mathrm{Bi}}_2{\mathrm{Se}}_3$.

Close

PrevNext

View figure in article

• Superconductivity
• Unconventional superconductors
• Landau-Ginzburg theory