Doping Dependence of Two Energy Scales in the Tunneling Spectra of Superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$

T. Kato, T. Maruyama, S. Okitsu +1

Scanning tunneling microscopy and spectroscopy have been performed on superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$ ($x=0.06,0.12,0.16$, and 0.21) at 4.2 K. Atomically resolved sur…