Formation of the pulsed electron-electron double resonance signal in the case of a finite amplitude of microwave fields |
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Authors: | A G Maryasov Yu D Tsvetkov |
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Institution: | (1) Division of Material Science (Physics), Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan;(2) Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama 226-8501, Japan;(3) PRESTO, Japan Science and Technology Agency (JST), Saitama 332-0012, Japan; |
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Abstract: | A theoretical study of the effect of microwave (MW) fields of finite amplitude on the process of pulsed electron-electron
double resonance (PELDOR) signal formation is carried out. It is shown that the behavior of the experimentally observed values
can be described by four vectors of partial magnetizations whose motion is reduced to precession in effective magnetic fields.
In the case of strong spin-spin interaction, the PELDOR effect can be observed when a sufficiently powerful MW field is applied
at pumping frequency to affect both components of the Pake doublet. The possibility of a “two-frequency” spin echo to appear
under the action of two pulses with different carrier frequencies in the system where the inhomogeneous broadening of the
electron spin resonance line contour is mainly determined by the dipole-dipole interaction is demonstrated. |
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