Results 1 to 10 of about 3,917,551 (300)

Certification of qubits in the prepare-and-measure scenario with large input alphabet and connections with the Grothendieck constant

open access: yesScientific Reports, 2023
We address the problem of testing the quantumness of two-dimensional systems in the prepare-and-measure (PM) scenario, using a large number of preparations and a large number of measurement settings, with binary outcome measurements. In this scenario, we
Péter Diviánszky   +3 more
doaj   +1 more source

Frustrated magnet for adiabatic demagnetization cooling to milli-Kelvin temperatures

open access: yesCommunications Materials, 2021
Adiabatic demagnetization refrigeration is an efficient technique for reaching mK temperatures. Here, the water-free frustrated magnet KBaYb $${({{\rm{BO}}}_{3})}_{2}$$ ( BO 3 ) 2 is shown to combine cooling efficiency with stability upon exposure to air,
Yoshifumi Tokiwa   +5 more
doaj   +1 more source

Giant conductivity of mobile non-oxide domain walls

open access: yesNature Communications, 2021
Conductive domain walls have been usually found in ferroelectric oxides. Here, the authors report on giant conductivity of domain walls and their magnetically avalanche-like expulsion event in non-oxide ferroelectric GaV4S8, extending the source of ...
S. Ghara   +6 more
doaj   +1 more source

Magnetization reversal through an antiferromagnetic state

open access: yesNature Communications, 2023
Magnetization reversal in ferro- and ferrimagnets is a well-known archetype of non-equilibrium processes, where the volume fractions of the oppositely magnetized domains vary and perfectly compensate each other at the coercive magnetic field.
Somnath Ghara   +8 more
doaj   +1 more source

Confirming the trilinear form of the optical magnetoelectric effect in the polar honeycomb antiferromagnet Co2Mo3O8

open access: yesnpj Quantum Materials, 2022
Magnetoelectric phenomena are intimately linked to relativistic effects and also require the material to break spatial inversion symmetry and time-reversal invariance. Magnetoelectric coupling can substantially affect light–matter interaction and lead to
S. Reschke   +11 more
doaj   +1 more source

Dressed j eff-1/2 objects in mixed-valence lacunar spinel molybdates

open access: yesScientific Reports, 2023
The lacunar-spinel chalcogenides exhibit magnetic centers in the form of transition-metal tetrahedra. On the basis of density-functional computations, the electronic ground state of an Mo4 13+ tetrahedron has been postulated as single-configuration a 1 2 
Thorben Petersen   +5 more
doaj   +1 more source

Sedimentological and sequence stratigraphy analyses of the syn-rift Triassic series of the Mohammedia–Benslimane–ElGara–Berrechid basin (Moroccan Meseta)

open access: yesComptes Rendus. Géoscience, 2021
Sedimentological analysis has shown that during the syn-rift phase (Upper Triassic) the Mohammedia–Benslimane–ElGara–Berrechid basin (MBEB) is characterized by detrital and evaporite sediment filling.
Afenzar, Abdelkrim, Essamoud, Rachid
doaj   +1 more source

Broadband magnetic resonance spectroscopy in MnSc $$_2$$ 2 S $$_4$$ 4  

open access: yesScientific Reports, 2023
Recent neutron scattering experiments suggested that frustrated magnetic interactions give rise to antiferromagnetic spiral and fractional skyrmion lattice phases in MnSc $$_2$$ 2 S $$_4$$ 4  .
Boglárka Tóth   +10 more
doaj   +1 more source

Dielectric study on mixtures of ionic liquids

open access: yesScientific Reports, 2017
Ionic liquids are promising candidates for electrolytes in energy-storage systems. We demonstrate that mixing two ionic liquids allows to precisely tune their physical properties, like the dc conductivity.
E. Thoms   +5 more
doaj   +1 more source

Vital role of magnetocrystalline anisotropy in cubic chiral skyrmion hosts

open access: yesnpj Quantum Materials, 2021
Magnetic anisotropy is anticipated to govern the formation of exotic spin textures reported recently in cubic chiral magnets, like low-temperature tilted conical and skyrmion lattice (SkL) states and metastable SkLs with various lattice geometry ...
M. Preißinger   +12 more
doaj   +1 more source

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