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[[constructive interference]], digital on analog, #2024

Interference patterns of propagating spin wave in spin Hall oscillator arrays
Mohammad Haidar
https://arxiv.org/abs/2403.15060 https://

Interference patterns of propagating spin wave in spin Hall oscillator arrays
In this study, we discuss the observation of spin wave interference generated by magnetic oscillators. We employ micromagnetic simulations for two coherent spin Hall nanowire oscillators positioned nearby, horizontally or vertically. The two nanowires produce circular waves with short wavelengths on the order of 100 nm, which interfere with each other. In the horizontal configuration, the spin waves exhibit constructive and destructive fringes, indicating amplification or cancellation of the am…

Pairing enhancement through the photography of the intermediate nucleus spectrum in a two-nucleon transfer process
G. Singh
https://arxiv.org/abs/2402.14964

Pairing enhancement through the photography of the intermediate nucleus spectrum in a two-nucleon transfer process
While forming an ($A$+2) nucleus from a nucleus $A$ via a two-neutron transfer reaction, the constructive interference of the many possible reaction channels favors significant pairing enhancement through the continuum of the intermediate ($A$+1) nucleus [Phys. Lett. B 834, 137413 (2022)]. I analyse this situation in more detail, from the point of view of a varying pairing field leading to the formation of ($A$+2) nucleus $^6$He, described as housing two-neutrons in orbitals of $^5$He. The natu…

Edge-wave phase-shifts versus normal-mode phase-tilts in an Eady problem with a sloping boundary
Julian Mak, Nili Harnik, Eyal Heifetz, Gautam Kumar, Ellie Q. Y. Ong
https://arxiv.org/abs/2404.12417

Edge-wave phase-shifts versus normal-mode phase-tilts in an Eady problem with a sloping boundary
One mechanistic interpretation of baroclinic instability is that of mutual constructive interference of Rossby edge-waves. While the two edge-waves and their relative phase-shifts are invoked as part of the mechanistic interpretation, the phase-tilts of the related normal modes are often presented instead. Here we highlight the differences between edge-wave phase-shifts and normal-mode phase-tilts, in the context of an Eady problem modified by the presence of a sloping boundary. We argue and pr…

High-power even- and odd mode emission from linear arrays of resonant-tunneling-diode (RTD) oscillators in the 0.4- to 0.8-THz frequency range
Fanqi Meng, Zhenling Tang, Petr Ourednik, Jahnabi Hazarika, Michael Feiginov, Safumi Suzuki, Hartmut G. Roskos
https://arxiv.org/abs/2404.07394 <…

High-power even- and odd mode emission from linear arrays of resonant-tunneling-diode (RTD) oscillators in the 0.4- to 0.8-THz frequency range
Resonant tunneling diode (RTD) oscillators possess the highest oscillation frequency among all electronic THz emitters. However, the emitted power from RTDs remains limited. Here, we propose linear RTD-oscillator arrays capable of supporting coherent emission from both odd and even coupled modes. Both modes exhibit constructive interference in the far field, enabling high power emission. Experimental demonstrations of coherent emission from 11-RTD-oscillator linear arrays are presented. The odd…