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VOLUME 27 (1978) | ISSUE 4 | PAGE 212
Microcontact anisotropy spectroscopy of electron-phonon interactions in metals
We measured the dependences of the second derivative of the current-voltage characteristics on the voltage for point contacts of single crystals of Cu and Zn with various orientations. The observed anisotropy of the microcontact spectra agrees qualitatively with the anisotropy of the phonon spectra of these metals.