How robust the global measurements of London penetration depth are: the case of Fe(Te${}_{1-x}$,Se${}_x$)

K. Cho, H. Kim, M. A. Tanatar +4

We report tunnel diode resonator measurements of in-plane London penetration depth, $\lambda (T)$, in optimally-doped single crystals of Fe(Te${}_{0.58}$Se${}_{0.42}$) with $T_c\sim$ 14.8 K.…