- Spin-Lattice Coupling and Superconductivity in Fe Pnictides.
- Phonon-engineered extreme thermal conductivity materials - Nature.
- Spin-phonon coupling and magnon scattering in few-layer.
- Spin-phonon coupling in NiO nanoparticle - AIP Publishing.
- Spectroscopic Studies of the Magnetic Excitation and Spin-Phonon.
- [PDF] First-principles studies of spin-phonon coupling in Cr2Ge2Te6.
- Spin-phonon coupling in NiO nanoparticle - NASA/ADS.
- Effects of spin-phonon coupling on two-dimensional ferromagnetic.
- Electron-phonon correlations on spin texture of gapped helical Dirac.
- Spin-phonon couplings in transition metal complexes with slow... - PubMed.
- EPW: Electron–phonon coupling, transport and superconducting.
- Spin-phonon coupling in HoCr1 − xFexO3 (x = 0 and 0.5) compounds.
- Magnetism, spin-phonon coupling and Kitaev interaction in Mott.
Spin-Lattice Coupling and Superconductivity in Fe Pnictides.
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.
Phonon-engineered extreme thermal conductivity materials - Nature.
We then spin-coated 500 nm of ZEP 520A resist (1 min at 2000 rpm) and baked the sample for 5 min at 180°C on a hot plate. Electron beam lithography was then used to write the desired pattern into the resist using a beam current of 100 nA with a 300-μm aperture and a dose of 240 μC/cm 2.
Spin-phonon coupling and magnon scattering in few-layer.
The magnetization, Raman spectroscopy, and ferroelectricity of multiferroic GdMn2O5 as a function of temperature and magnetic field are investigated. The complicated magnetic transitions at low temperatures are featured with anomalous Raman mode shifts, dielectric response, and ferroelectricity generation, indicating the significant spin-phonon coupling. It is argued that this coupling is. The naturally weak spin-orbit coupling in Graphene can be largely enhanced by adatom deposition (e.g. Weeks et al. Phys. Rev. X 1, 021001 (2011)). However, the dynamics of the adatoms also induces a coupling between phonons and the electron spin. Using group theory and a tight-binding model, we systematically investigate the coupling between the low-energy in-plane phonons and the electron. "Spin current generation and non-reciprocity via magnon-phonon coupling" Jorge Puebla 1 1 RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan In this talk we present our recent work regarding magnon-phonon coupling.
Spin-phonon coupling in NiO nanoparticle - AIP Publishing.
This behaviour is attributed to spin-phonon coupling, which is due to the modulation of super exchange integral by lattice vibration. On the other hand, the anomalous behaviour of A g mode and its line-width around magnetic ordering in HoCr 0.5 Fe 0.5 O 3 compound suggest the spin-phonon coupling. Here we discuss different Mn spin-relaxation mechanisms: first, Mn-phonon coupling, which is enhanced in the presence of the exciton; second, phonon induced hole spin relaxation combined with carrier-Mn spin-flip coupling and photon emission results in Mn spin relaxation. We model the Mn spin dynamics under the influence of a pumping laser that. Spin-phonon coupling coefficients in this important antiferromagnetic material. The use of the second-order phonon scattering and ultraviolet laser excitation (k¼325nm) was essential for over-coming the problem of the optical selection rules and dominance of the two-magnon band in the visi-ble Raman spectrum of NiO.
Spectroscopic Studies of the Magnetic Excitation and Spin-Phonon.
The observed behavior is consistent with the presence of the previously reported short-range magnetic order and the strong spin-phonon coupling. Subjects: Materials Science () ; Strongly Correlated Electrons (). 3D and 2D materials Wannier tight-binding Hamiltonian dtaabase for electrons with spin-orbit coupling in JARVIS-WTB (Keyword: ‘WANN’) wtbh_phonon. 15502. 3D and 2D materials Wannier tight-binding Hamiltonian for phonons at Gamma with finite difference (Keyword:FD-ELAST) jff. 2538.
[PDF] First-principles studies of spin-phonon coupling in Cr2Ge2Te6.
DOI: 10.1080/00150199108209431 Corpus ID: 119522032; Pseudo spin-phonon coupling model of the normal-incommensurate phase transition of C2O4D ND4, ½ D2O @article{Krauzman1991PseudoSC, title={Pseudo spin-phonon coupling model of the normal-incommensurate phase transition of C2O4D ND4, ½ D2O}, author={M. Krauzman and A. Colline and M. Debeau and Davor Kirin and F. Moussa and Robert M. Pick and. Spin-phonon coupling effects, as reflected in phonon frequency shifts between ferromagnetic (FM) and G-type antiferromagnetic (AFM) configurations in cubic CaMnO 3, SrMnO 3, BaMnO 3, LaCrO 3, LaFeO 3, and La 2 (CrFe)O 6, are investigated using density-functional methods.The calculations are carried out both with a hybrid-functional Heyd-Scuseria-Ernzerhof (HSE) approach and with a DFT + U. Spin-Phonon Interface It is therefore a prime candidate for the demonstration of strong interactions between an artificial atom and single phonons (quanta of vibration). By integrating SiV centers with high quality factor nanomechanical resonators in cryogenic environments, we hope to demonstrate this coupling which could be a promising path.
Spin-phonon coupling in NiO nanoparticle - NASA/ADS.
The peculiarities of the dependency of the phonon wave number on temperature (with a relatively weak peak at 293 cm(-1)) can be attributed to the spin-phonon coupling. The variation with temperature of the spin-phonon mode develops when the antiferromagnetic state is near the ordering temperature of the Cr spins.
Effects of spin-phonon coupling on two-dimensional ferromagnetic.
Suggesting that phonon scattering associated with short- and long-ranged antiferromagnetic order is suppressedin thepresence ofthemobilized charge.This interplaybetweenbound charge andspin-phonon coupling might allow for the reversible control of spin fluctuations using weak external fields. Calculation of spin-phonon coupling constants for the vibra-tional 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 cou-pling constants are not populated. Additionally.
Electron-phonon correlations on spin texture of gapped helical Dirac.
We analyze these local lattice distortions and use frequency shifts to extract spin-phonon coupling constants for the Fe-O stretch, Fe-OH 2 rock, and NH 4 + libration. Inspection also reveals subtle symmetry breaking of the ammonium counterions across the ferroelectric transition. The coexistence of such varied mixing processes in a.
Spin-phonon couplings in transition metal complexes with slow... - PubMed.
Nanoelectromechanical.
EPW: Electron–phonon coupling, transport and superconducting.
True ferroelectric transition with a considerable value of polarization (0.06 microC/cm2 at 15K) have been found in the specimen below TFE=108 K. We observed an intense spin-phonon coupling (SPC) across TSR and TN from the temperature dependent Raman spectroscopy and is responsible for the intrinsic magnetoelectric effect. Spin-phonon couplings in transition metal complexes with slow magnetic relaxation Spin-phonon coupling plays an important role in single-molecule magnets and molecular qubits. However, there have been few detailed studies of its nature.
Spin-phonon coupling in HoCr1 − xFexO3 (x = 0 and 0.5) compounds.
In this Perspective, we aim to deeply understand the role of electron-phonon coupling and STEs with magnetic coupling effects in regulating the optical properties of LDMHs and try to provide a novel way or a series of novel systems for the realization of next-generation high-performance luminescent materials with spin-coupling-involved photonics.
Magnetism, spin-phonon coupling and Kitaev interaction in Mott.
However, the spin-phonon coupling has not been well identified yet in Ca 2RuO 4. In this paper, we demonstrate that the spin-phonon cou- pling controls the birth of coherent phonon oscillations in Ca 2RuO 4. We investigate coherent lattice vibrations of Ca 2RuO 4that show enormous anomalies in theA gphonon mode of the lowest frequency acrossT N. Although spin-phonon coupling has been derstanding of the mechanisms associated with the peculiar observed in a large variety of materials exhibiting ferromag- behavior of these compounds, we have carried out a system- netic 共FM兲 and antiferromagnetic 共AFM兲 orders, as well as in atic and comparative experimental study of their lattice.
Other links:
Best Poker Set Buy In Auckalnd