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The effect of the AlOx barrier thickness on magnetic and morphological properties of Ta/Co/(AlOx)/Alq3/Si hybrid structures was systematically studied by means of atomic force microscopy, SQUID magnetometry and nuclear magnetic resonance…

Heterostructures from complex oxides allow one to combine various electronic and magnetic orders as to induce new quantum states. A prominent example is the coupling between superconducting and magnetic orders in multilayers from high-Tc…

Using atomistic Monte Carlo simulations, we investigated the impact of the interface on the structural properties of iron and copper (Fe/Cu) magnetic multilayers grown by Vorono\"i diagram. Interest in magnetic multilayers has recently…

Materials Science · Physics 2017-11-27 Jules Berlin Nde Kengne , Bernard Fongang , Serge Zekeng

Exchange coupling between two magnetic layers through an interlayer is of broad interest for numerous recent applications of nano-magnetic systems. In this Letter we study ferromagnetic exchange coupling through amorphous paramagnetic Fe-Ta…

Materials Science · Physics 2013-04-11 Matthias Gottwald , Jimmy J. Kan , Kangho Lee , Seung H. Kang , Eric E. Fullerton

The experimental observation of quantum anomalous Hall effect (QAHE) in magnetic topological insulators has stimulated enormous interest in condensed-matter physics and materials science. For the purpose of realizing high-temperature QAHE,…

Materials Science · Physics 2019-05-24 Yang Ma , Yu Yun , Yuehui Li , Wenyu Xing , Yunyan Yao , Ranran Cai , Yangyang Chen , Yuan Ji , Peng Gao , Xin-Cheng Xie , Wei Han

The quasiparticle band structures of 3d transition metals, ferromagnetic Fe, Ni and paramagnetic Cu, are calculated by the GW approximation. The width of occupied 3d valence band, which is overestimated in the LSDA, is in good agreement…

Materials Science · Physics 2009-11-07 Atsushi Yamasaki , Takeo Fujiwara

Using temperature-dependent magnetoresistance and magnetization measurements on Fe/Cr multilayers that exhibit pronounced giant magnetoresistance (GMR), we have found evidence for the presence of a glassy antiferromagnetic (GAF) phase. This…

Materials Science · Physics 2009-11-07 N. Theodoropoulou , A. F. Hebard , M. Gabay , A. K. Majumdar , C. Pace , J. Lannon , D. Temple

The interface composed of magnets and strong spin-orbit coupling (SOC) materials forms an important platform for spintronic devices and intriguing magnetic phenomena, such as the chiral spin textures and magnetic proximity effect (MPE). The…

Materials Science · Physics 2023-12-29 Meng Wang , Shunsuke Mori , Xiuzhen Yu , Masahiro Sawada , Naoya Kanazawa , Pu Yu , Fumitaka Kagawa

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…

Materials Science · Physics 2009-11-10 K. Eid , H. Kurt , W. P. Pratt , J. Bass

Ag/Fe/Ag and Cr/Fe/Cr trilayers with a single $25 nm$ thick ferromagnetic layer exhibit giant magnetoresistance (GMR) type behavior. The resistance decreases for parallel and transversal magnetic field alignements with a Langevin-type…

Materials Science · Physics 2016-08-15 J. Balogh , L. F. Kiss , A. Halbritter , I. Kézsmárki , G. Mihály

We theoretically study the tunnel magnetoresistance (TMR) effect in (111)-oriented junctions Co/MgO/Co(111) and Ni/MgO/Ni(111). The Co-based junction is shown to have a TMR ratio over 2000$\%$, which is one order higher than that of the…

Materials Science · Physics 2020-04-08 Keisuke Masuda , Hiroyoshi Itoh , Yoshio Miura

When the thickness of metal film approaches the nanoscale, itinerant carriers resonate between its boundaries and form quantum well states (QWSs), which are crucial to account for the film electrical, transport and magnetic properties.…

Materials Science · Physics 2015-10-28 Ching-Hao Chang , Kun-Peng Dou , Ying-Chin Chen , Tzay-Ming Hong , Chao-Cheng Kaun

We present a systematic study of higher-order exchange interactions beyond the pair-wise Heisenberg exchange in transition-metal trilayers based on density functional theory calculations. We show that these terms can play an important role…

Materials Science · Physics 2021-07-21 Mara Gutzeit , Soumyajyoti Haldar , Sebastian Meyer , Stefan Heinze

We examine the effect of an FET geometry on the charge ordering phase diagram of transition metal oxides using numerical simulations of a semiclassical model including long-range Coulomb fields, resulting in nanoscale pattern formation. We…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 C. J. Olson Reichhardt , C. Reichhardt , D. L. Smith , A. R. Bishop

Transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new…

Strongly Correlated Electrons · Physics 2014-07-04 Jian-Xin Zhu , Xiao-Dong Wen , J. T. Haraldsen , Mi He , C. Panagopoulos , Elbert E. M. Chia

Correlations between electrons and the effective dimensionality are crucial factors that shape the properties of an interacting electron system. For example, the onsite Coulomb repulsion, U, may inhibit, or completely block the intersite…

Strongly Correlated Electrons · Physics 2007-05-23 T. Valla , P. D. Johnson , Z. Yusof , B. Wells , Q. Li , S. M. Loureiro , R. J. Cava , M. Mikami , Y. Mori , M. Yoshimura , T. Sasaki

We investigate how different interface geometries of an Al/Al$_2$O$_3$ junction, a common component of modern tunnel devices, affect electron transport through the tunnel barrier. We study six distinct Al/Al$_2$O$_3$ interfaces which differ…

Mesoscale and Nanoscale Physics · Physics 2016-03-23 M Koberidze , A V Feshchenko , M J Puska , R M Nieminen , J P Pekola

The interplay between quantum geometry and magnetic order offers a novel strategy for designing next-generation nanodevices. Here, we demonstrate that interlayer magnetic coupling in two-dimensional (2D) CoPSe3 bilayers enables precise…

Mesoscale and Nanoscale Physics · Physics 2025-03-06 Zhenning Sun , Tao Wang , Hao Jin , Xinru Li , Yadong Wei , Jian Wang

High-throughput density functional calculations are used to investigate the effect of interstitial B, C and N atoms on 21 alloys reported to crystallize in the cubic Cu$_3$Au structure. It is shown that the interstitials can have a…

Materials Science · Physics 2020-05-13 Ingo Opahle , Harish K. Singh , Jan Zemen , Oliver Gutfleisch , Hongbin Zhang

Interlayer exchange coupling (IEC) between two magnetic layers sandwiched by a nonmagnetic spacer layer plays a critical role in shaping the magnetic properties of such heterostructures. The quantum anomalous Hall (QAH) effect has been…

Mesoscale and Nanoscale Physics · Physics 2025-09-09 Ruoxi Zhang , Yi-Fan Zhao , Ling-Jie Zhou , Deyi Zhuo , Zi-Jie Yan , Chao-Xing Liu , Moses H. W. Chan , Chui-Zhen Chen , Cui-Zu Chang
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