Detection and analysis of spin signal in spin-labeled poly(l-lysine)

Abstract

In this paper, the authors present the study of spin-labeled poly(l-lysine) biological molecules (polypeptides) using electron paramagnetic resonance, atomic force microscopy, and electron spin noise-scanning tunneling microscopy. In the presented studies, the authors were able to obtain the information about the local distribution of the spin signal emission, and they registered the spectra for the selected area with nanometer resolution. The preparation method of spin-labeled biopolymer, experimental setup, and the procedure of calibration are also described in detail.

Electron Paramagnetic Resonance of Single Magnetic Moment on a Surface

“… 1 measured current-current correlations induced peaks in the power spectra of the tunneling current associated with precession of a local paramagnetic moment (electron spin resonance – ESR), using scanning tunneling microscopy (STM), ESR-STM. While controversial at the time, these measurements have not only been refined 2 3 4 5 6 and put into theoretical context 7 8 9 , but also been independently reproduced in different systems 10 11 12 13 14 . For a more thorough review we refer to ref.…”