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相关论文: Interlayer exchange coupling in (Ga,Mn)As based mu…

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In order to better understand the role of possible couplings in determining the giant magnetoresistance (GMR) behavior of multilayers, a knowledge of the dependence of the $GMR$ on magnetic field $H$ appears to be useful. Since a few…

材料科学 · 物理学 2015-11-30 Krisztián Szász , Imre Bakonyi

Electron-magnon coupling reveals key insights into the interfacial properties between non-magnetic metals and magnetic insulators, influencing charge transport and spin dynamics. Here, we present temperature-dependent Raman spectroscopy and…

The origin of the $A$-type antiferromagnetic ordering, characterized by ferromagnetic layers coupling antiferromagnetically, in the prototype semiconductor altermagnet $\alpha$-MnTe has been a topic of ongoing debate. Experimentally,…

Using spin waves we directly probe the interface of an exchange biased Ni$_{80}$Fe$_{20}$/Ir$_{25}$Mn$_{75}$ film which has been modified by the presence of an Au dusting layer. Combining this experimental data with a discretised simulation…

介观与纳米尺度物理 · 物理学 2011-12-12 R. Magaraggia , S. McIntyre , K. Kennewell , R. L. Stamps , M. Ali , D. Greig , B. J. Hickey , C. H. Marrows

Magnetism in Ni-Mn-Z (Z = Ga,In,Sn,Sb) Heusler alloys has so far been predominantly attributed to Rudermann-Kittel-Kasuya-Yoshida type interactions between Mn atoms. We investigate magnetic interactions in one such alloy,…

材料科学 · 物理学 2015-06-15 K. R. Priolkar , P. A. Bhobe , D. N. Lobo , S. W. D'Souza , S. R. Barman , A. Chakrabarti , S. Emura

We theoretically investigate the coexistence of antiferromagnetism and superconductivity in the iron-based superconductors by using the mean-field theory for two- and three-orbital models. We find that both the s_{+-}-wave and s_{++}-wave…

超导电性 · 物理学 2014-08-05 Yasunori Matsui , Takao Morinari , Takami Tohyama

We report a study of interlayer exchange interaction in multilayer CoPt/Co structures consisting of periodic CoPt multilayer film with an "easy axis" anisotropy and thick Co layer with an "easy plane" anisotropy separated by Pt spacer with…

介观与纳米尺度物理 · 物理学 2016-11-23 E. S. Demidov , N. S. Gusev , L. I. Budarin , E. A. Karashtin , V. L. Mironov , A. A. Fraerman

We study superconductivity on the surface of a topological insulator, mediated by magnetic fluctuations in an adjacent ferromagnetic or antiferromagnetic insulator. Superconductivity can arise from effective interactions between helical…

超导电性 · 物理学 2020-03-06 Eirik Erlandsen , Arne Brataas , Asle Sudbø

It is generally believed that superconductivity and magnetism are two antagonistic long-range phenomena. However, as it was preliminarily highlighted in D. Stamopoulos et al. [Phys. Rev. B 75, 014501 (2007)] and extensively studied in this…

超导电性 · 物理学 2009-11-13 D. Stamopoulos , E. Manios , M. Pissas

We report the observation of the spin valve effect in (Ga,Mn)As/p-GaAs/(Ga,Mn)As trilayer devices. Magnetoresistance measurements carried out in the current in plane geometry reveal positive magnetoresistance peaks when the two…

材料科学 · 物理学 2009-11-11 G. Xiang , B. L. Sheu , M. Zhu , P. Schiffer , N. Samarth

We present a simple atomistic model for the description of noncollinear coupling in magnetic multilayers with hybrid spacer layers made of Ru alloyed to ferromagnetic atoms such as Fe. In contrast to previous analytical and micromagnetic…

We provide a complete and systematic first-principles study of the thermodynamic stability, structural parameters, and magnetic properties of the T1 non-collinear antiferromagnetic L1$_2$-IrMn$_3$ surface and L1$_2$-IrMn$_3$/Fe…

材料科学 · 物理学 2020-10-16 Daniel Maldonado-Lopez , Noboru Takeuchi , Jonathan Guerrero-Sanchez

Magnetic properties of Ga$_{1-x}$Mn$_x$N are studied theoretically by employing a tight binding approach to determine exchange integrals $J_{ij}$ characterizing the coupling between Mn spin pairs located at distances $R_{ij}$ up to the 16th…

材料科学 · 物理学 2014-07-14 C. Simserides , J. A. Majewski , K. N. Trohidou , T. Dietl

We investigate the possibility of controlling the magnetic phase transition of the heterointerface between a half-doped manganite La$_{0.5}$Ca$_{0.5}$MnO$_{3}$ and a multiferroic BiFeO$_{3}$ through magnetoelectric coupling. Using…

强关联电子 · 物理学 2015-06-17 Di Yi , Jian Liu , Satoshi Okamoto , Suresha Jagannatha , Yi-Chun Chen , Pu Yu , Ying-Hao Chu , Elke Arenholz , R. Ramesh

We present a theory of carrier-induced ferromagnetism in diluted magnetic semiconductors (III_{1-x} Mn_x V) which allows for arbitrary itinerant-carrier spin polarization and dynamic correlations. Both ingredients are essential in…

凝聚态物理 · 物理学 2009-10-31 Jürgen König , Hsiu-Hau Lin , Allan H. MacDonald

We study interlayer transport of multilayer graphenes in magnetic field with various stacking structures (AB, ABC, and AA types) by calculating the Hall and longitudinal conductivities as functions of Fermi energy. Their behavior depends…

介观与纳米尺度物理 · 物理学 2012-01-23 Takeo Wakutsu , Masaaki Nakamura , Balázs Dóra

We investigate the structural and electronic origin of antiferromagnetic (AFM) coupling in the Yttrium iron garnet (YIG) and permalloy (Py) bilayer system at the atomic level. Ferromagnetic Resonance (FMR) reveal unique hybrid modes in…

The design of spin-transport based devices such as magnon transistors or spin valves will require multilayer systems composed of different magnetic materials with different physical properties. Such layered structures can show various…

材料科学 · 物理学 2022-03-23 Verena Brehm , Martin Evers , Ulrike Ritzmann , Ulrich Nowak

Ion bombardment has been shown to be capable of enhancing the interlayer exchange coupling in a trilayer system that exhibits giant magnetoresistance. We demonstrate that this phenomenon can be derived from the phase coherence among…

介观与纳米尺度物理 · 物理学 2015-05-19 Ching-Hao Chang , Tzay-Ming Hong

We study quantum interference corrections to the conductivity in (Ga,Mn)As ferromagnetic semiconductors using a model with disordered valence band holes coupled to localized Mn moments through a p-d kinetic-exchange interaction. We find…

材料科学 · 物理学 2015-05-13 Ion Garate , Jairo Sinova , T. Jungwirth , A. H. MacDonald
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