Single-Pulse Nuclear Echo Signals in Magnetically Ordered Media

Kuz'min, V. S.; Kolesenko, V. M.

doi:10.1134/1.2131148

Cited by 2 publications

(2 citation statements)

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“…One can see from (22) that PSPE and MSPE signals in the 1st subsystem are caused by the nonlinear dependence of the phases (26) of the induction signal terms with n > 0 on the detuning ∆ 1 . This non-linearity is described by the term nβ 1 τ .…”

Section: Discussionmentioning

confidence: 99%

“…Firstly, the SPE is strong in magnetic materials with a domain structure. This is due to the amplification effect caused by the hyperfine interaction of the electronic and nuclear subsystems [11,21,22]. Secondly, the SPE formation in magnetically ordered materials is significantly influenced by the nuclei spin-spin interaction which takes place via the spin ordered electron system.…”

Section: Introductionmentioning

confidence: 99%

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Peculiarities of Rabi oscillations and free induction decay in two-component nuclear spin systems with Ising nuclei interactions

Rusetsky,

Kolesenko,

Shymanovich

2021

Preprint

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Nuclear spin systems in manganites, having separation of ferromagnetic and antiferromagnetic phases, which are manifested as two lines in the NMR spectrum, are studied. Taking into account the Ising nuclear interaction, we obtain an analytical description of Rabi oscillations and free induction decay in two-component nuclear spin systems when a radio-frequency pulse non-resonantly excites the nuclei of one magnetic phase and resonantly the nuclei of the other phase. It is revealed that the nonlinearity of interaction between the nuclei of these phases results in additional harmonics in the Rabi oscillations of the non-resonantly excited subsystem. We also show that the Ising interaction inside this subsystem forms multiple echoes in the free induction decay, whereas their damping and amplitude modulation is caused by the spin coupling between the subsystems.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%