Tuning low-energy scales in YbRh${}_2$Si${}_2$ by non-isoelectronic substitution and pressure

M. -H. Schubert, Y. Tokiwa, S. -H. Hübner +4

The heavy-fermion metal YbRh${}_2$Si${}_2$ realizes a field-induced quantum critical point with multiple vanishing energy scales $T_{\mathrm{N}}(B)$ and $T^{\ast }(B)$. We investigate their ch…