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Related papers: The microscopic spin-phonon coupling constants in …

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The effect of in-chain and off-chain substitutions on 1D spin fluctuations in the spin-Peierls compound CuGeO_3 has been studied using Raman scattering in order to understand the interplay between defect induced states, enhanced spin-spin…

Strongly Correlated Electrons · Physics 2009-10-30 P. Lemmens , M. Fischer , G. Güntherodt , C. Gros , P. G. J. van Dongen , M. Weiden , W. Richter , C. Geibel , F. Steglich

In conventional superconductors, bulk physical properties typically degrade as the film thickness approaches the two-dimensional (2D) limit. Here in the (111) oriented LaAlO3/KTaO3 (LAO/KTO) heterostructure, we demonstrate experimental…

Optimizing the cooperativity between two distinct particles is an important feature of quantum information processing. Of particular interest is the coupling between spin and phonon, which allows for integrated long range communication…

Applied Physics · Physics 2024-02-16 K. An , C. Kim , K. -W. Moon , R. Kohno , G. Olivetti , G. de Loubens , N. Vukadinovic , J. Ben Youssef , C. Hwang , O. Klein

We utilize an exact variational numerical procedure to calculate the ground state properties of a polaron in the presence of a Rashba-like spin orbit interaction. Our results corroborate with previous work performed with the Momentum…

Strongly Correlated Electrons · Physics 2011-07-11 Zhou Li , L. Covaci , M. Berciu , D. Baillie , F. Marsiglio

We present results from magnetic resonance measurements for 75-350 GHz in $\alpha$'-NaV$_{2}$O$_{5}$. The temperature dependence of the integrated intensity indicates that we observe transitions in the excited state. A quantitative…

Condensed Matter · Physics 2016-08-15 S. Schmidt , W. Palme , B. Lüthi , M. Weiden , R. Hauptmann , C. Geibel

We have studied the lattice dynamics, electron-phonon coupling, and superconducting properties of $\alpha$-MoB$_2$, as a function of applied pressure, within the framework of density functional perturbation theory using a mixed-basis…

Superconductivity · Physics 2023-10-31 Marco-Antonio Carmona-Galván , Rolf Heid , Omar De la Peña-Seaman

Using inelastic magnetic neutron scattering we have discovered a localized spin resonance at 4.5 meV in the ordered phase of the geometrically frustrated cubic antiferromagnet $\rm ZnCr_2O_4$. The resonance develops abruptly from quantum…

Strongly Correlated Electrons · Physics 2009-10-31 S. -H. Lee , C. Broholm , T. H. Kim , W. Ratcliff , S-W. Cheong

The strength of the electron-phonon coupling parameter and its evolution throughout a solid's phase diagram often determines phenomena such as superconductivity, charge- and spin-density waves. Its experimental determination relies on the…

Microscopic coupling between the electron spin and the lattice vibration is responsible for an array of exotic properties from morphic effects in simple magnets to magnetodielectric coupling in multiferroic spinels and hematites.…

Materials Science · Physics 2022-07-22 Mingqiang Gu , Y. H. Bai , G. P. Zhang , Thomas F. George

Cr2Ge2Te6 has been of interest for decades, as it is one of only a few naturally forming ferromagnetic semiconductors. Recently, this material has been revisited due to its potential as a 2 dimensional semiconducting ferromagnet and a…

Materials Science · Physics 2016-05-02 Yao Tian , Mason J. Gray , Huiwen Ji , R. J. Cava , Kenneth S. Burch

Compressively strained epitaxial (001) EuTiO3 thin films of tetragonal symmetry have been deposited on (001) (LaAlO3)_0.29-(SrAl_{1/2}Ta_{1/2}O3)_0.71 (LSAT) substrates by reactive molecular-beam epitaxy. Enhancement of the Neel temperature…

The magnetic-field (H) dependence of the thermal conductivity \kappa of Pr_{1.3}La_{0.7}CuO_4 is found to show a pronounced minimum for in-plane fields at low temperature, which is best attributed to the scattering of phonons by free spins…

Superconductivity · Physics 2009-11-11 X. F. Sun , I. Tsukada , T. Suzuki , Seiki Komiya , Yoichi Ando

Spin-phonon interactions are central to many interesting phenomena, ranging from superconductivity to magnetoelectric effects. Yet, they are believed to have a negligible influence on the structural behavior of most materials. For example,…

Materials Science · Physics 2016-12-14 Claudio Cazorla , Oswaldo Dieguez , Jorge Iniguez

We provide experimental and theoretical evidence for the realization of the Peierls-type structurally distorted state in the quasi-one-dimensional superconductor Sc$_3$CoC$_4$ by a phonon-softening mechanism. The transition from the high-…

A theory for the coupling constants between spin polarized degenerate fermionic atoms is developed for the case of atoms confined to a quasi one-dimensional harmonic trap. Exploiting the presence of the Fermi edge and the large number of…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 F. Gleisberg , W. Wonneberger

Using density functional theory calculations with spin-orbit coupling (SOC), we report on the temperature-dependent thermodynamical properties of Pb: electrical resistivity, thermal expansion (TE), heat capacity, bulk modulus and its…

Materials Science · Physics 2025-03-13 Félix Antoine Goudreault , Samuel Poncé , Feliciano Giustino , Michel Côté

We investigate a model for the CuO_2 plane of high-T_c superconductors where the charge carriers are coupled to A_{1g} and B_{1g} symmetric out-of plane vibrations of the oxygen atoms in the presence of local Hubbard correlations. The…

Strongly Correlated Electrons · Physics 2015-03-19 G. Seibold , M. Grilli , J. Lorenzana

The role of the spin-phonon coupling in spin-Peierls chains doped with spin-0 or spin-1 impurities is investigated by various numerical methods such as exact diagonalization, quantum Monte Carlo simulations and Density Matrix…

Strongly Correlated Electrons · Physics 2007-05-23 D. Augier , P. Hansen , D. Poilblanc , J. Riera , E. Sorensen

We investigated in detail the optical properties of several Cu(1-delta)Mg(delta)GeO3 (with delta=0,0.01), and CuGe(1-x)B(x)O3 with B=Si (x=0,0.007,0.05,0.1), and Al (x=0,0.01) single crystals, in the frequency range 20-32000 cm^-1. We…

Strongly Correlated Electrons · Physics 2009-10-31 A. Damascelli , D. van der Marel , G. Dhalenne , A. Revcolevschi

It is shown theoretically that the buckling of the CuO$_{2}$ planes in certain cuprate systems can be explained in terms of an electric field across the planes which originates from different valences of atoms above and below the plane.…

Superconductivity · Physics 2009-10-31 M. Opel , R. Hackl , T. P. Devereaux , A. Virosztek , A. Zawadowski , A. Erb , E. Walker , H. Berger , L. Forró
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