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相关论文: On the complexity of spinels: Magnetic, electronic…

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Topological quantum materials hold great promise for future technological applications. Their unique electronic properties, such as protected surface states and exotic quasiparticles, offer opportunities for designing novel electronic…

强关联电子 · 物理学 2024-05-28 Christian Stefan Gruber , Mahmoud Abdel-Hafiez

Spin states of two-dimensional Wigner clusters are considered at low temperatures, when all electrons are in ground coordinate states. The spin subsystem behavior is determined by antiferromagnetic exchange integrals. The spin states in…

介观与纳米尺度物理 · 物理学 2022-12-08 Mehrdad M. Mahmoodian , M. M. Mahmoodian , M. V. Entin

Recent experimental studies on Fe substituted spinel CoCr$_{2}$O$_{4}$ have discovered multiple functional properties in the system such as temperature and composition dependent magnetic compensation, tunable exchange bias and…

材料科学 · 物理学 2018-08-29 Debashish Das , Subhradip Ghosh

Compounds of the new materials class LnTAl$_4$X$_2$ (Ln = lanthanide, X = tetrel, T = transition metal) host exotic magnetic phenomena due to geometric frustration induced by their triangular lattice. Complex spin arrangements, magnetic…

Nine years ago, superconductors based on the magnetic element iron were discovered. A flurry of research activity has revealed an unprecedented diversity of chemical structures and physical properties. Similarly to other unconventional…

超导电性 · 物理学 2017-11-17 Anna Böhmer , Andreas Kreyssig

The electronic structure of the rare earth nitrides is studied systematically using the {\it ab-initio} self-interaction corrected local-spin-density approximation (SIC-LSD). This approach allows both a localised description of the rare…

强关联电子 · 物理学 2009-11-10 C. M. Aerts , P. Strange , M. Horne , W. M. Temmerman , Z. Szotek , A. Svane

Chirality in crystals arises from the exclusive presence of proper symmetry operations, such as rotations and screw axes, while lacking improper operations like inversion, mirror planes, and roto-inversions. Crystallographic chirality is…

In actinide systems, the 5f electrons experience a uniquely delicate balance of effects and interactions having similar energy scales, which are often difficult to properly disentangle. This interplay of factors such as the dual nature of…

Type-II multiferroics, in which the magnetic order breaks inversion symmetry, are appealing for both fundamental and applied research due their intrinsic coupling between magnetic and electrical orders. Using first-principles calculations…

材料科学 · 物理学 2023-11-20 Urmimala Dey , Mark S. Senn , Nicholas C. Bristowe

Electrides are special ionic solids with excess cavity-trapped electrons serving as anions. Despite the extensive studies on electrides, the interplay between electrides and magnetism is not well understood due to the lack of stable…

材料科学 · 物理学 2019-04-22 Xuelei Sui , Jianfeng Wang , Wenhui Duan

Spin textures with nontrivial topology, such as vortices and skyrmions, have attracted attention as a source of unconventional magnetic, transport, and optical phenomena. Recently, a new generation of topological spin textures has been…

强关联电子 · 物理学 2021-11-08 Satoru Hayami , Yukitoshi Motome

The discovery of iron pnictides and iron chalcogenides as a new class of unconventional superconductors in 2008 has generated an enourmous amount of experimental and theoretical work that identifies these materials as correlated metals with…

强关联电子 · 物理学 2017-01-24 Daniel Guterding , Steffen Backes , Milan Tomic , Harald O. Jeschke , Roser Valenti

Multiferroic materials, which reveal magnetic and electric order, are in the focus of recent solid state research. Especially the simultaneous occurrence of ferroelectricity and ferromagnetism, combined with an intimate coupling of…

强关联电子 · 物理学 2009-11-11 J. Hemberger , P. Lunkenheimer , R. Fichtl , H. -A. Krug von Nidda , V. Tsurkan , A. Loidl

A review is given of the experimental situation and theoretical predictions concerning unconventional magnetic ordering in dense Kondo 4f- and 5f-systems, including recently investigated on cerium, ytterbium, and actinide based ternary…

强关联电子 · 物理学 2017-11-16 V. Yu. Irkhin

Half-metallic Heusler alloys are amongst the most promising materials for future magnetoelectronic applications. We review some recent results on the electronic properties of these compounds. The origin of the gap in these half-metallic…

材料科学 · 物理学 2009-11-11 I. Galanakis , Ph. Mavropoulos

Spin-based electronics has evolved into a major field of research that broadly encompasses different classes of materials, magnetic systems, and devices. This review describes recent advances in spintronics that have the potential to impact…

The underdoped phase diagram of the iron-based superconductors exemplifies the complexity common to many correlated materials. Indeed, multiple ordered states that break different symmetries but display comparable transition temperatures…

超导电性 · 物理学 2019-07-23 Morten H. Christensen , Jian Kang , Rafael M. Fernandes

Polar metals, commonly defined by the coexistence of polar crystal structure and metallicity, are thought to be scarce because the long-range electrostatic fields favoring the polar structure are expected to be fully screened by the…

The competition between interactions in frustrated magnets allows a wide variety of new ground states, often exhibiting emergent physics and unique excitations. Expanding the suite of lattices available for study enhances our chances of…

We show that 1:1 ordering of A$'$ and A$''$ cations in A$'_{1/2}$A$''_{1/2}$B$_2$X$_4$ magnetic spinels results in appearance of magnetoelectric properties. Possible value of magnetically induced electric polarization is calculated using…

强关联电子 · 物理学 2014-05-15 N. V. Ter-Oganessian