Bosonic Spectral Function and the Electron-Phonon Interaction in HTSC Cuprates

Figure 28

(a) 𝑑²𝐼/𝑑𝑉² of a Giaver-like contact in La_2−𝑥Sr_𝑥CuO₄—note the large structure below 50meV; (b) 𝑑²𝐼/𝑑𝑉² of an Andreev- and Giaver-like contact compared to the peaks in the phonon density of states. From [160].

(a)

(b)