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Related papers: Investigation on Mn$_{3-\delta}$Ga/MgO interface f…

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Ionic liquid (IL) gating has emerged as a powerful tool to control the structural, electronic, optical, and magnetic properties of materials by driving ion motion at solid interfaces. In magneto-ionic systems, electric fields are used to…

We present an investigation on the structural and magnetic properties of the interfaces of $\mathrm{Fe_3O_4/MgO(001)}$ and $\mathrm{Fe_3O_4/NiO/MgO(001)}$ by extracting cation-selective magnetooptical depth profiles by means of x-ray…

Nuclear spins are among the potential candidates prospected for quantum information technology. A recent breakthrough enabled to atomically resolve their interaction with the electron spin, the so-called hyperfine interaction, within…

Mesoscale and Nanoscale Physics · Physics 2021-06-09 Sufyan Shehada , Manuel dos Santos Dias , Filipe Souza Mendes Guimarães , Muayad Abusaa , Samir Lounis

The prediction of ultra-low magnetic damping in Co 2 MnZ Heusler half-metal thin-film magnets is explored in this study and the damping response is shown to be linked to the underlying electronic properties. By substituting the Z elements…

In this paper, we have built a numerical p-n Si/GaAs heterojunction model using a quantum-mechanical tunneling theory with various quantum tunneling interfacial materials including two-dimensional semiconductors such as hexagonal boron…

Mesoscale and Nanoscale Physics · Physics 2021-10-26 Md Nazmul Hasan , Chenxi Li , Junyu Lai , Jung-Hun Seo

We fabricated a non-local spin valve device with Co-MgO injector/detector tunnel contacts on a graphene spin channel. In this device, the spin polarization of the injector contact can be tuned by both the injector current bias and the gate…

Mesoscale and Nanoscale Physics · Physics 2018-10-01 Sebastian Ringer , Matthias Rosenauer , Tobias Völkl , Maximilian Kadur , Franz Hopperdietzel , Dieter Weiss , Jonathan Eroms

We combine two first-principles computer simulation techniques, path integral Monte-Carlo and density functional theory molecular dynamics, to determine the equation of state of magnesium oxide in the regime of warm dense matter, with…

Experimentally, the intermetallic compound Mn$_{4}$FeGe$_{3}$ has been recently shown to exhibit enhanced magnetic properties and spin polarization compared to the Mn$_{5}$Ge$_{3}$ parent compound. The present {\em ab-initio} study focusses…

Materials Science · Physics 2011-12-30 A. Stroppa , G. Kresse , A. Continenza

We employ a kinetic-exchange tight-binding model to calculate the magnetic interaction and anisotropy energies of a pair of substitutional Mn atoms in GaAs as a function of their separation distance and direction. We find that the most…

Materials Science · Physics 2015-05-18 T. O. Strandberg , C. M. Canali , A. H. MacDonald

We report on room temperature magnetoresistance and low frequency noise in sub-100nm elliptic CoFeB/MgO/CoFeB magnetic tunnel junctions with ultrathin (0.9nm) barriers. For magnetic fields applied along the hard axis, we observe current…

Mesoscale and Nanoscale Physics · Physics 2013-05-28 J. P. Cascales , D. Herranz , J. L. Sambricio , U. Ebels , J. A. Katine , F. G. Aliev

Phenomena originated from spin-orbit interaction, such as magnetic anisotropy (MA), Rashba-type interactions, or topological insulators, have drawn huge attention for its intriguing physics. In particular, the search for a novel…

Materials Science · Physics 2016-02-17 Dorj Odkhuu , Noejung Park

Current-driven magnetization reversal in a ferromagnetic semiconductor based (Ga,Mn)As/GaAs/(Ga,Mn)As magnetic tunnel junction is demonstrated at 30 K. Magnetoresistance measurements combined with current pulse application on a rectangular…

Materials Science · Physics 2009-11-10 D. Chiba , Y. Sato , T. Kita , F. Matsukura , H. Ohno

We study the annealing stability of bottom-pinned perpendicularly magnetized magnetic tunnel junctions based on dual MgO free layers and thin fixed systems comprising a hard [Co/Ni] multilayer antiferromagnetically coupled to thin a Co…

Materials Science · Physics 2017-03-22 T. Devolder , S. Couet , J. Swerts , E. Liu , T. Lin , S. Mertens , G. Kar , A. Furnemont

We calculate the magnetic interactions between two nearest neighbor substitutional magnetic ions (Co or Mn) in ZnO by means of density functional theory and compare it with the available experimental data. Using the local spin density…

Materials Science · Physics 2007-05-23 Thomas Chanier , M. Sargolzaei , I. Opahle , R. Hayn , K. Koepernik

Presently a lot of efforts are devoted to the investigation of new two-dimensional magnetic materials, which are considered as promising for the realization of the future electronics and spintronics devices. However, the utilization of…

Materials Science · Physics 2022-05-02 Yichen Jin , Mouhui Yan , Yuriy Dedkov , Elena Voloshina

A mixture of Mg and MgO has been subjected to a shock-wave pressure of 170 kbar. The ac susceptibility measurements of the product has revealed a metastable superconductivity with Tc=30 K, characterized by glassy dynamics of the shielding…

Superconductivity · Physics 2013-03-29 N. S. Sidorov , A. V. Palnichenko , D. V. Shakhrai , V. V. Avdonin , O. M. Vyaselev , S. S. Khasanov

The effect of doping Mo for Mn on the magnetic and transport properties of the colossal magnetoresistance material, La0.67Ba0.33MnO3, has been studied. Compounds of the series La0.67Ba0.33Mn1-xMoxO3 (x=0.0 to 0.1) have been prepared and…

Materials Science · Physics 2009-11-11 Darshan C. Kundaliya , Reeta Vij , R. G. Kulkarni , B. Varughese , A. K. Nigam , S. K. Malik

Recent discoveries in two-dimensional (2D) magnetism have intensified the investigation of van der Waals (vdW) magnetic materials and further improved our ability to tune their magnetic properties. Tunable magnetism has been widely studied…

Materials Science · Physics 2022-07-19 Rabindra Basnet , K. Kotur , M. Rybak , Cory Stephenson , Samuel Bishop , C. Autieri , M. Birowska , Jin Hu

We demonstrate the exchange coupling of a ferromagnetic semiconductor (Ga1-xMnxAs) with an overgrown antiferromagnet (MnO). Unlike most conventional exchange biased systems, the blocking temperature of the antiferromagnet (T_B = 48 +- 2 K)…

Materials Science · Physics 2009-11-10 K. F. Eid , M. B. Stone , K. C. Ku , P. Schiffer , N. Samarth , T. C. Shih , C. J. Palmstrom

Diluted magnetic semiconductors (DMS) have attracted significant attention for their potential in spintronic applications. Particularly, magnetically-doped GaN is highly attractive due to its high relevance for the CMOS industry and the…

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