Spin Phonon Coupling - PKBONUS.NETLIFY.APP

Spin phonon coupling in hexagonal multiferroic YMnO3.
Spin-phonon coupling and high-temperature phase transition in.
Spin-phonon coupling in antiferromagnetic nickel oxide (Journal Article.
Short range spin-spin correlation, spin-phonon coupling.
Spin-phonon coupling in multiferroic Y2CoMnO6 - ScienceDirect.
Spin-phonon coupling in antiferromagnetic nickel oxide.
Spin-induced negative thermal expansion and.
Spin phonon coupling.
Condensed matter - How to understand spin-phonon.
Electron-Phonon and Spin-Lattice Coupling in Atomically Thin Layers of.
Phys. Rev. B 103, 064431 (2021) - Spin-phonon coupling and.
Spin-phonon coupling in the incommensurate magnetic ordered.
Theory of spin-phonon coupling in multiferroic manganese.
Spin-phonon coupling in Sr and Ti incorporated 9R-BaMnO3.

Spin phonon coupling in hexagonal multiferroic YMnO3.

In addition, the phonon mode shows a redshift entering the magnetically ordered state, which indicates a spin-phonon coupling in the system. Density functional theory calculations reveal that theA goscillations result in octahedral tilting distortions, which are exactly in sync with the lattice deformation driven by the magnetic ordering.

Spin-phonon coupling and high-temperature phase transition in.

. Aug 01, 2019 · Phonon renormalization due to spin-phonon coupling is expected to lead to a change in the phonon lifetime which is associated with the phonon linewidth (Γ ∝ 1 τ). Therefore, the deviation in linewidth from anharmonic behaviour further signifies the role of spin-phonon coupling in the Sr/Ti incorporated 9R-BaMnO 3. Iors of this phonon in ZnCr 2O 4 and CdCr 2O 4 will be ex-plained as a consequence of the spin-phonon coupling effects on their different magnetic order. Figure 3 a shows the temperature dependence of the fre-quency of the lowest energy IR active phonon. This phonon also shows anomalous softening below 100 K, the frequency shifts by 1.5 cm−1.

Spin-phonon coupling in antiferromagnetic nickel oxide (Journal Article.

Oct 01, 2021 · where ω 0 is the phonon frequency at absolute zero temperature, ω qh represents the quasi-harmonic contribution, ω anh corresponds to the contribution from phonon–phonon interaction, ω el-ph and ω sp-ph are the electron–phonon and the spin–phonon coupling effect. As VOCl is a insulator, there is no electron–phonon coupling effect. Dec 22, 2017 · The peculiarities of the spin-phonon coupling are consistent with the trends given by density functional theory. The obtained results shed light on the nature of the spin-phonon coupling in antiferromagnetic insulators and can help in developing spintronic devices. The work at UC Riverside was supported as part of the Spins and Heat in.

Short range spin-spin correlation, spin-phonon coupling.

Here, we investigate how couplings between electron, spin, and lattice are manifested in the phonon spectra of few-septuple-layer thick MnBi 2 Te 4. After categorizing phonon modes by their symmetries, we study the systematic changes in frequency, line width, and line shape of a spectrally isolated A 1g mode. The electron-phonon coupling. Oct 05, 2011 · Magnetoelectric phase diagrams of the rare-earth (R) Mn perovskites R MnO 3 are theoretically studied by focusing on crucial roles of the symmetric magnetostriction or the Peierls-type spin-phonon coupling through extending our previous work [M. Mochizuki et al., Phys. Rev. Lett. 105, 037205 (2010)].

Spin-phonon coupling in multiferroic Y2CoMnO6 - ScienceDirect.

Spin-phonon coupling in antiferromagnetic nickel oxide.

.. We established that the spins of Ni atoms interact more strongly with the longitudinal than transverse optical phonons and produce opposite effects on the phonon energies. The peculiarities of the spin-phonon coupling are consistent with the trends given by density functional theory.

Spin-induced negative thermal expansion and.

Here, we provide the first experimental evidence for a strong spin-phonon coupling between a single molecule spin and a carbon nanotube resonator, ultimately enabling coherent spin manipulation and quantum entanglement. Publication types Research Support, Non-U.S. Gov't MeSH terms Electromagnetic Fields Humans Ions / chemistry* Magnetics. We introduce a hybrid tripartite quantum system for strong coupling between a semiconductor spin, a mechanical phonon, and a microwave photon. Consisting of a piezoelectric resonator with an integrated diamond strain concentrator, this system achieves microwave-acoustic and spin-acoustic coupling rates ~MHz or greater, allowing for simultaneous ultra-high cooperativities (both $\\sim 10^4.

Spin phonon coupling.

Oct 13, 2015 · The comparison of the experimental and first-principles calculated phonon spectra highlights unambiguously a spin-phonon coupling character in YMnO 3. This is further supported by the pronounced differences in the magnetic and non-magnetic phonon calculations. Here we consider such a material, the 5dperovskite NaOsO3, and observe a coupling between spin and phonon manifested in a frequency shift of 40 cm−1, the largest measured in any material. The anomalous modes are shown to involve solely Os-O interactions and magnetism is revealed as the driving microscopic mechanism for the phonon renormalization..

Condensed matter - How to understand spin-phonon.

First, the inherently strong spin-phonon coupling in these materials provides a fruitful route for the control of both the vibrational and magnetic dynamics via photon helicity, allowing for a new.

Electron-Phonon and Spin-Lattice Coupling in Atomically Thin Layers of.

. This multiple spin-phonon feature was confirmed by the relative Raman intensity of two modes in relation to the stretching one, which is shown in Fig. 5. We can see that the relative intensity of these modes decreases down to a minimum at the magnetic transition and turns to increase again for lower temperatures. The data reveal spin-phonon coupling near the ferromagnetic transition occurring at around 120 K. The correlation of the Raman and magnetization data suggests that the structural order influences the magnitude of the spin-phonon coupling. Authors.

Phys. Rev. B 103, 064431 (2021) - Spin-phonon coupling and.

In these compounds, spin-phonon coupling (SPC) typically plays a crucial role in magnetic fluctuations, magnon dissipation, and ultimately establishing long-range ferromagnetic order. However, a systematic understanding of SPC in 2D magnets that combines theory and experiment is still lacking. Jul 14, 2020 · Spin-phonon coupling is one of the fundamental interactions in functional materials, indispensable for understanding their unexpected magnetic ground states. Ferromagnetic SrRuO 3 is a correlated metal with the potential for utilization in novel spintronic devices and serves as a promising platform for studying spin-phonon interactions.

Spin-phonon coupling in the incommensurate magnetic ordered.

Publisher's Accepted Manuscript: Spin-phonon coupling in antiferromagnetic nickel oxide Citation Details Title: Spin-phonon coupling in antiferromagnetic nickel oxide.

Theory of spin-phonon coupling in multiferroic manganese.

. Dec 31, 2007 · Inelastic neutron scattering measurements have been performed on YMnO3, aiming to study the interplay between spin and lattice degrees of freedom in this hexagonal multiferroic material. Our study provides evidence for a strong coupling between magnons and phonons, evidenced by the opening of a gap below T (N) in the dispersion of the. In this work, we study the effect of the spin-phonon coupling on prototypical models of frustrated magnetism. We adopt a variational framework based upon Gutzwiller-projected wave functions implemented with a spin-phonon Jastrow factor, providing a full quantum treatment of both spin and phonon degrees of freedom. The results on the frustrated.

Spin-phonon coupling in Sr and Ti incorporated 9R-BaMnO3.

The calculation of spin-phonon coupling constants for the vibrational modes shows that the first vibrational mode, despite having a low spin-phonon constant, is the most efficient process for the spin relaxation at low temperatures. In such conditions, vibrational modes with higher spin-phonon coupling constants are not populated. Jul 01, 2021 · The spin-phonon coupling in the o-RMO family was reported by Granado et al. and Laverdière et al. , where the latter authors affirmed the coupling effect in small r R compounds and that the incommensurate AFM is negligible, whereas in E-type AFM ordered compounds, the coupling effect should be very weak or absent. It is found that spin-phonon coupling is responsible for the Raman scattering anomalies, namely, the relatively large Raman shift hardening and peak width narrowing below the Néel temperature for LO and its overtone 2LO phonons. ACKNOWLEDGMENTS We are indebted to Professor Lei Shi for fruitful discussions.