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Quantum decoherence of the central spin in a sparse system of dipolar coupled spins
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Dynamic electron localization initiated by particle-bath coupling
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Understanding the entanglement entropy and spectra of 2D quantum systems through arrays of coupled 1D chains
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Gigantic magnetic-field-induced polarization and magnetoelectric coupling in a ferrimagnetic oxide CaBaCo 4 O 7
Below Tc, the single-crystal study of CaBaCo40,, a noncollinear ferrimagnet (Tc = 64 K) with a polar orthorhombic space group (Pbn21) between 4 and 293 K, shows a large change inthe electric polarization along its c axis reaching !!iP = 17 mC/m2 at 10 K. At 62.5 K, a magnetic-field-driven giant variation inpolarization P(9 T) - P(O T) = 8 mC/m2 is observed. Moreover, the present magnetoelectric measurements are fully consistent withthe m'm2' magnetic point group. This ferrimagnetic oxide, which belongs to the "114" structural family, opens an avenue for the search for new magnetoelectrics.
Symmetry-Protected Mode Coupling Near Normal Incidence for Narrowband Transmission Filtering in a Dielectric Grating
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Strong pressure-dependent electron-phonon coupling in FeSe
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Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides
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Magnetodielectric coupling in the ilmenites M TiO 3 ( M = Co , Ni)
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Interface-driven spin-torque ferromagnetic resonance by Rashba coupling at the interface between nonmagnetic materials
The Rashba-Edelstein effect stems from the interaction between the electron's spin and its momentum induced by spin-orbit interaction at an interface or a surface. It was shown that the inverse Rashba-Edelstein effect can be used to convert a spin current into a charge current. Here, we demonstrate the reverse process of a charge-to spin-current conversion at a Bi/Ag Rashba interface. We show that this interface-driven spin current can drive an adjacent ferromagnet to resonance. We employ a spin-torque ferromagnetic resonance excitation/detection scheme which was developed originally for a bulk spin-orbital effect, the spin Hall effect. In our experiment, the direct Rashba-Edelstein effect generates an oscillating spin current from an alternating charge current driving the magnetization precession in a neighboring permalloy (Py, Ni 80 Fe 20 ) layer. As a result, electrical detection of the magnetization dynamics is achieved by a rectificationmechanism of the time dependent multilayer resistance arising from the anisotropic magnetoresistance.
Coupled spin- 1 2 ladders as microscopic models for non-Abelian chiral spin liquids
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