${\kappa }_{\text{GL}}=\lambda /\xi$

Note 1 to entry: For a type II superconductor, ${\kappa }_{\text{GL}}>1/\sqrt{2}$ , ${\kappa }_{\text{GL}}=H_{\text{c}2}/\left(\sqrt{2}{H}_{\text{c}}\right)$ , where $H_{\text{c}2}$ is the upper critical field strength and $H_{\text{c}}$ is the critical field strength.

Note 2 to entry: For a type I superconductor, ${\kappa }_{\text{GL}}<1/\sqrt{2}$.

Note 3 to entry: This entry was numbered 815-10-34 in IEC 60050-815:2015.