نتایج جستجو برای: magnetism characterization
تعداد نتایج: 382159 فیلتر نتایج به سال:
La0.7Sr0.3MnO3, a half-metallic ferromagnet with full spin polarization, is generally used as a standard spin injector in heterostructures. However, the magnetism of La0.7Sr0.3MnO3 is strongly modified near interfaces, which was addressed as "dead-layer" phenomenon whose origin is still controversial. Here, both magnetic and structural properties of La0.7Sr0.3MnO3/SrTiO3 heterostructures were i...
3d transition impurities in wide-gap oxides may function as donor/acceptor defects to modify carrier concentrations, and as magnetic elements to induce collective magnetism. Previous first-principles calculations have been crippled by the LDA error, where the occupation of the 3d-induced levels is incorrect due to spurious charge spilling into the misrepresented host conduction band, and have o...
Using density functional theory calculations, we have investigated the effects of biaxial tensile strain on the electronic and magnetic properties of partially hydrogenated graphene (PHG) structures. Our study demonstrates that PHG configuration with hexagon vacancies is more energetically favorable than several other types of PHG configurations. In addition, an appropriate biaxial tensile stra...
Muon spin relaxation experiments have been performed in the pyrochlore iridate Pr2Ir2O7 for temperatures in the range 0.025– 250 K. Kubo-Toyabe relaxation functions are observed up to & 200 K, indicating static magnetism over this temperature range. The T → 0 static muon spin relaxation rate ∆(0) ≈ 8 μs implies a weak quasistatic moment (∼0.1μB). The temperature dependence of ∆ is highly non-me...
Possible ferromagnetism induced in otherwise nonmagnetic materials has been motivating intense research in complex oxide heterostructures. Here we show that a confined magnetism is realized at the interface between SrTiO3 and two insulating polar oxides, BiMnO3 and LaAlO3. By using polarization dependent x-ray absorption spectroscopy, we find that in both cases the magnetism can be stabilized b...
Precision magnetometry is fundamental to the development of novel magnetic materials and devices. Recently, nitrogen-vacancy (NV) center in diamond has emerged as a promising probe for static magnetism two-dimensional (2D) van der Waals materials, capable quantitative imaging with nanoscale spatial resolution. However, dynamic character magnetism, crucial understanding phase transition achievin...
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