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The hyperfine interactions at the uranium site in the antiferromagnetic USb2 compound were calculated within the density functional theory (DFT) employing augmented plane wave plus local orbital (APW+lo) method. We investigated the…

强关联电子 · 物理学 2007-05-23 A. Fathi , S. Jalali Asadabadi , M. G. Rad , H. Amini

Artificial magnetic fields (AMFs) created for ultra cold systems depend sensitively on the internal structure of the atoms. In a mixture, each component experiences a different AMF depending on its internal state. This enables the study of…

量子气体 · 物理学 2016-02-03 F. Nur Ünal , M. Ö. Oktel

Rare-earth materials hold promise to realize exotic magnetic states owing to synergy between electron correlations and spin-orbit coupling. Recently, quasi-two-dimensional honeycomb magnets $A_2$PrO$_3$ ($A$ = alkali metals) were predicted…

强关联电子 · 物理学 2024-10-11 Seong-Hoon Jang , Yukitoshi Motome

The binary intermetallic materials, $M_3$Sn$_2$ ($M$ = 3d transition metal) present a new class of strongly correlated systems that naturally allows for the interplay of magnetism and metallicity. Using first principles calculations we…

强关联电子 · 物理学 2020-07-10 Santu Baidya , Aabhaas Vineet Mallik , Subhro Bhattacharjee , Tanusri Saha-Dasgupta

We show that some metals and alloys (X = Cu, Ag, FeMn, or Cu and Ag combined with each other), sputtered between ferromagnetic Co and superconducting Nb, produce no change in current-perpendicular-to-plane magnetoresistance (CPP-MR) in a…

材料科学 · 物理学 2009-11-10 K. Eid , H. Kurt , W. P. Pratt , J. Bass

We investigate the electronic structure of AgF2, AgFBF4, AgF and Ag2O using X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) at the Ag L3 edge. XAS results were compared with density functional theory…

We investigate the properties of magnetic supracolliodal polymers -- magnetic filaments (MFs) -- with super-paramagnetic monomers, with and without Van der Waals (VdW) attraction between them. We employ molecular dynamics (MD) simulations…

软凝聚态物质 · 物理学 2020-03-10 Deniz Mostarac , Ekaterina Novak , Pedro A. Sánchez , Sofia Kantorovich

Meta-GGA calculations of the ambient and high-pressure polymorphs of silver difluoride indicate that the compression-induced structural changes lead to a 3.5-fold increase in the strength of antiferomagnetic spin-spin interactions resulting…

Electric field control of the exchange bias effect across ferromagnet/antiferromagnet (FM/AF) interfaces has offered exciting potentials for low-energy-dissipation spintronics. In particular, the solid state magneto-ionic means is highly…

Multiterminal measurements have typically been employed to examine electronic properties of strongly correlated electronic materials such as transition metal oxides without the influence of contact effects. In contrast, in this work we…

强关联电子 · 物理学 2010-12-01 A. A. Fursina , R. G. S. Sofin , I. V. Shvets , D. Natelson

Since the discovery of the metallic antiferromagnetic (AF) ground state near superconductivity in iron-pnictide superconductors, a central question has been whether magnetism in these materials arises from weakly correlated electrons, as in…

Fast spin manipulation in magnetic heterostructures, where magnetic interactions between different materials often define the functionality of devices, is a key issue in the development of ultrafast spintronics. Although recently developed…

材料科学 · 物理学 2022-03-04 X. Liu , H. C. Yuan , P. Liu , J. Y. Shi , H. L. Wang , S. H. Nie , F. Jin , Z. Zheng , X. Z. Yu , J. H. Zhao , H. B. Zhao , G. Lüpke

Samples consisting of one ferromagnetic and one diamagnetic component which are immiscible at the thermodynamic equilibrium (Co-Cu, Fe-Cu, Fe-Ag) are processed by high-pressure torsion at various compositions. The received microstructures…

A model binary hybrid system composed of a randomly distributed rare-earth ferromagnetic (Gd) part embedded in an s-wave superconducting (Nb) matrix is being manufactured to study the interplay between competing superconducting and…

超导电性 · 物理学 2016-01-06 Ambika Bawa , Anurag Gupta , Sandeep Singh , V. P. S. Awana , Sangeeta Sahoo

We demonstrate that it is possible to distinguish two conductance switching mechanisms in silver sulfide devices at room temperature. Experiments were performed using a Ag$_2$S thin film deposited on a wide Ag bottom electrode, which was…

介观与纳米尺度物理 · 物理学 2017-12-11 J. J. T. Wagenaar , M. Morales-Masis , J. M. van Ruitenbeek

Less common ligand coordination of transition-metal centers is often associated with peculiar valence-shell electron configurations and outstanding physical properties. One example is the Fe$^+$ ion with linear coordination, actively…

强关联电子 · 物理学 2020-11-20 R. Murugesan , M. S. Eldeeb , M. Yehia , B. Büchner , V. Kataev , O. Janson , L. Hozoi

We explore the role of interfacial antiferromagnetic interaction in coupled soft and hard ferromagnetic layers to ascribe the complex variety of magneto-transport phenomena observed in $La_{0.7}Sr_{0.3}MnO_3/SrRuO_3$ (LSMO/SRO)…

强关联电子 · 物理学 2023-06-28 Sandip Halder , Subrat K. Das , Kalpataru Pradhan

The antiferromagnetic insulating cuprate Ba$_3$Cu$_2$O$_4$Cl$_2$ contains folded CuO$_2$ chains with four magnetic copper ions ($S=1/2$) per unit cell. An underlying multiorbital Hubbard model is formulated and the superexchange theory is…

强关联电子 · 物理学 2009-10-31 V. Yushankhai , M. Wolf , K. -H. Mueller , R. Hayn , H. Rosner

Recently, superconductivity was discovered at very low densities in slightly misaligned graphene multilayers. Surprisingly, despite extremely low electronic density (about $10^{-4}$ electrons per unit cell), these systems realize…

强关联电子 · 物理学 2020-04-01 Ivar Martin

The magnetic anisotropy af a rectangular Cu-O-Cu bond is investigated in second order of the spin-orbit interaction. Such a bond is characteristic for cuprates having edge sharing CuO_2 chains, and exists also in the Cu_3O_4 plane or in…

强关联电子 · 物理学 2009-10-31 V. Yu. Yushankhai , R. Hayn