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High temperature superconductivity in one unit cell (1 UC) FeSe on SrTiO3 heterostructure has become a research frontier in condensed matter physics and material science. The superconducting transition temperature (Tc) of ultrathin FeSe…

超导电性 · 物理学 2020-03-05 Chaofei Liu , Jian Wang

We present a first principle study of new class of high-$T_c$ half-heusler ferromagnets NiCrZ (Z = Si, P, Ge, As, Te). The structure and magnetic properties are investigated through the calculation of the electronic structure, equilibrium…

材料科学 · 物理学 2011-10-26 Van An Dinh , Kazunori Sato , Hirosi Katayama-Yoshida

FeSe-derived superconductors show some unique behaviors relative to iron-pnictide superconductors, which are very helpful to understand the mechanism of superconductivity in high-Tc iron-based superconductors. The low-energy electronic…

超导电性 · 物理学 2014-12-17 X. F. Lu , N. Z. Wang , H. Wu , Y. P. Wu , D. Zhao , X. Z. Zeng , X. G. Luo , T. Wu , W. Bao , G. H. Zhang , F. Q. Huang , Q. Z. Huang , X. H. Chen

Since 2000, the intensive effort in materials research to develop a diluted magnetic semiconductor exhibiting high-temperature (HT) ferromagnetism above room temperature was not successful. Here, the possible first bulk diluted…

If magnetic semiconductors are ever to find wide application in real spintronic devices, their magnetic and electronic properties will require tailoring in much the same way that band gaps are engineered in conventional semiconductors.…

材料科学 · 物理学 2007-05-23 Steven C. Erwin , Igor Zutic

We present an exhaustive theoretical analysis of charge and thermoelectric transport in a normal metal-ferromagnetic insulator-superconductor (NFIS) junction, and explore the possibility of its use as a sensitive thermometer. We…

介观与纳米尺度物理 · 物理学 2015-10-28 F. Giazotto , P. Solinas , A. Braggio , F. S. Bergeret

The quest for pragmatic room-temperature (RT) magnetic semiconductors (MSs) with a suitable bandgap constitutes one of the contemporary opportunities to be exploited. This may provide a materials platform for to bring new-generation ideal…

First principles studies were performed in order to find out the possibility of inducing half-metallicity in Heusler Compound CoFeMnSb, by means of alloying it with 3d-transition metal elements. Proper alloying element is selected through…

材料科学 · 物理学 2019-05-15 Upendra Kumar , P. V. Sreenivasa Reddy , Satadeep Bhattacharjee , Seung-Cheol Lee

A ternary ferrimagnetic half-metal, constructed through substituting 25% Fe for Mn in zincblende semiconductor MnTe, is predicted in terms of accurate first-principles calculations. It has a large half-metallic (HM) gap of 0.54eV and its…

材料科学 · 物理学 2009-04-10 Li-Fang Zhu , Bang-Gui Liu

III-V semiconductor type-II superlattices (T2SLs) are a promising material system with the potential to significantly reduce the dark current of, and thus realize high-performance in, infrared photodetectors at elevated temperatures.…

光学 · 物理学 2022-03-11 L. Nordin , A. J. Muhowski , D. Wasserman

We have grown (InyGa1-y)1-xMnxAs ferromagnetic semiconductor layers with Mn composition x up to 0.13 on InP substrates by molecular beam epitaxy. Near the lattice-matched composition, i.e., y ~ 0.53, the Curie temperature increases linearly…

材料科学 · 物理学 2009-11-07 T. Slupinski , H. Munekata , A. Oiwa

A promising scheme for electron microrefrigeration based on ferromagnet-superconductor contacts is presented. In this setup, cooling power densities up to 600 nW/$\mu$m$^2$ can be achieved leading to electronic temperature reductions…

超导电性 · 物理学 2009-11-07 F. Giazotto , F. Taddei , R. Fazio , F. Beltram

The ZrSiS-class of layered materials offer interesting topological and magnetic characteristics suitable for spintronics applications. In this work, we have synthesized a polycrystalline NdBiTe using solid-state reaction technique and have…

The electronic structure and magnetic exchange interactions in pure and V-doped Fe16N2 are studied within the framework of density functional theory. The Curie temperatures were obtained with both mean field approximation (MFA) as well as…

材料科学 · 物理学 2018-10-24 Satadeep Bhattacharjee , Seung-Cheol Lee

The layers of a high-temperature novel GaAs:Fe diluted magnetic semiconductor (DMS) with an average Fe content up to 20 at. % were grown on (001) i-GaAs substrates using a pulsed laser deposition in a vacuum. The transmission electron…

Two-dimensional (2D) intrinsic ferromagnetic semiconductors are expected to stand out in the spintronic field. Recently, the monolayer VI$_{3}$ has been experimentally synthesized but the weak ferromagnetism and low Curie temperature…

材料科学 · 物理学 2020-04-22 Yulu Ren , Qiaoqiao Li , Wenhui Wan , Yong Liu , Yanfeng Ge

Wurtzite GaN:Mn films on sapphire substrates were successfully grown by use of the molecular beam epitaxy (MBE) system. The film has an extremely high Curie temperature of around 940 K, although the Mn concentration is only about 3 ~ 5 %.…

材料科学 · 物理学 2009-11-07 H. Hori , S. Sonoda , T. Sasaki , Y. Yamamoto , S. Shimizu , K. Suga , K. Kindo

We demonstrate the electrical and optical control of ferromagnetism in semiconductor heterostructures at high temperatures of 100-117 K. The heterostructures consist of Mn delta-doped GaAs and p-type AlGaAs, where the overlap of the hole…

材料科学 · 物理学 2007-05-23 Ahsan M. Nazmul , S. Kobayashi , S. Sugahara , M. Tanaka

This review compiles results of experimental and theoretical studies on thin films and quantum structures of semiconductors with randomly distributed Mn ions, which exhibit spintronic functionalities associated with collective ferromagnetic…

材料科学 · 物理学 2014-04-02 Tomasz Dietl , Hideo Ohno

The discovery of high-temperature superconductivity in Fe-based compounds [1,2] has triggered numerous investigations on the interplay between superconductivity and magnetism [3] and, more recently, on the enhancement of transition…