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We describe the effect of the Fe layer thickness on the antiferromagnetic interlayer exchange coupling in [Fe/MgO]$_N$ superlattices. An increase in coupling strength with increasing Fe layer thickness is observed, which highlights the need…

Materials Science · Physics 2024-06-04 Anna L. Ravensburg , Matías P. Grassi , Björgvin Hjövarsson , Vassilios Kapaklis

Interlayer excitons in transition-metal dichalcogenide heterobilayers combine high binding energy and valley-contrasting physics with long optical lifetime and strong dipolar character. Their permanent electric dipole enables electric-field…

The exchange bias (EB) effect, pivotal in magnetic data storage and sensing devices, has been observed not only in interfacial regions but also in intrinsic ferromagnetic materials. Here, we've uncovered a robust and stable exchange bias…

Materials Science · Physics 2023-12-29 Xi Zhang , Xiuquan Xia , Qiye Liu , Yonggang He , Le Wang , Junhao Lin , Jia-Wei Mei , Yingchun Cheng , Jun-Feng Dai

. We focused on the interaction between two ferromagnetic cobalt layers through a non-magnetic titanium layer. The magnetic properties of the structure were characterized by ferromagnetic resonance technique (FMR). The data were collected…

Materials Science · Physics 2023-07-19 M. Erkovan , S. Tokdemir Ozturk , D. Taskin Gazioglu , R. Topkaya , O. Ozturk

In spin qubit arrays the exchange coupling can be harnessed to implement two-qubit gates and to realize intermediate-range qubit connectivity along a spin bus. In this work, we propose a scheme to characterize the exchange coupling between…

Mesoscale and Nanoscale Physics · Physics 2024-11-28 Florian Ginzel , Guido Burkard

Despite the weak nature of interlayer forces in transition metal dichalcogenide (TMD) materials, their properties are highly dependent on the number of layers in the few-layer two-dimensional (2D) limit. Here, we present a combined scanning…

We fabricated a nanolayered hybrid superconductor-ferromagnet spin-valve structure, the resistive state of which depends on the preceding magnetic field polarity. The effect is based on a strong exchange bias (about -2 kOe) on a diluted…

For layered materials, the interlayer stacking is a critical degree of freedom tuning electronic properties, while its microscopic characterization faces great challenges. The transition-metal dichalcogenide 1T-TaS$_2$ represents a novel…

Materials Science · Physics 2025-08-01 Li Cheng , Linpeng Nie , Xuanyu Long , Li Liang , Dan Zhao , Jian Li , Zheng Liu , Tao Wu , Xianhui Chen , Xiaolong Zou

The interlayer spin correlations in the magnetic/non-magnetic semiconductor superlattices are reviewed. The experimental evidences of interlayer exchange coupling in different all-semiconductor structures, based on neutronographic and…

Materials Science · Physics 2007-05-23 P. Kacman , J. Blinowski , H. Kepa , T. M. Giebultowicz

We present a theoretical study of the magnetic band structure of conduction and valence states in Quantum Well Wires in high magnetic fields. We show that hole mixing results in a very complex behavior of valence edge states with respect to…

Condensed Matter · Physics 2009-10-28 G. Goldoni , A. Fasolino

Twisted bilayer systems host a wealth of emergent phenomena, such as flat-band superconductivity, ferromagnetism, and ferroelectricity, arising from moir\'e superlattices and unconventional interlayer coupling. Despite their central role,…

Mesoscale and Nanoscale Physics · Physics 2026-01-21 A. Nakamura , Y. Chiashi , T. Shimojima , Y. Tanaka , S. Akatsuka , M. Sakano , S. Masubuchi , T. Machida , K. Watanabe , T. Taniguchi , K. Ishizaka

Two-dimensional materials and their heterostructures have opened up new possibilities for magnetism at the nanoscale. In this study, we utilize first-principles simulations to investigate the structural, electronic, and magnetic properties…

Materials Science · Physics 2022-10-11 Diem Thi-Xuan Dang , Ranjan Kumar Barik , Manh-Huong Phan , Lilia M. Woods

A ferromagnetic insulator attached to a superconductor is known to induce an exchange splitting of the Bardeen-Cooper-Schrieffer (BCS) singularity by a magnitude proportional to the magnetization, and penetrating into the superconductor to…

Superconductivity · Physics 2017-10-09 E. Strambini , V. N. Golovach , G. De Simoni , J. S. Moodera , F. S. Bergeret , F. Giazotto

We investigate the structural properties of Fe$_{1-x}$Ni$_x$/Cu/Fe$_{1-x}$Ni$_x$ ( $x=0.5$, non Invar and $x=0.36$, Invar) trilayers deposited on Si~(100)~at room temperature using dc magnetron sputtering technique in ultra high vacuum…

Materials Science · Physics 2020-06-16 Ananya Sahoo , Maheswari Mohanta , S. K. Parida , V. R. R. Medicherla

Layers of two-dimensional materials stacked with a small twist-angle give rise to beating periodic patterns on a scale much larger than the original lattice, referred to as a moir\'e superlattice. When the stacking involves more than two…

Mesoscale and Nanoscale Physics · Physics 2020-12-03 Kan-Ting Tsai , Xi Zhang , Ziyan Zhu , Yujie Luo , Stephen Carr , Mitchell Luskin , Efthimios Kaxiras , Ke Wang

We apply the previously developed theory of the resonant indirect exchange interaction to explain the ferromagnetic properties of the hybrid heterostructure consisting of a InGaAs-based quantum well (QW) sandwiched between GaAs barriers…

Mesoscale and Nanoscale Physics · Physics 2015-02-09 I. V. Rozhansky , I. V. Krainov , N. S. Averkiev , B. A. Aronzon , A. B. Davydov , K. I. Kugel , V. Tripathi , E. Lahderanta

The magnetic properties of thin-film Pd/Fe/Pd trilayers in which an embedded ~1.5 A-thick ultrathin layer of Fe induces ferromagnetism in the surrounding Pd have been investigated. The thickness of the ferromagnetic trilayer is controlled…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 R. K. Das , R. Misra , S. Tongay , R. Rairigh , A. F. Hebard

This article reports dependence of exchange bias (EB) effect on interparticle interactions in nanocrystalline Co/CoO core/shell structures, synthesized using conventional sol-gel technique. Analysis via powder X-Ray diffraction (PXRD)…

The continuous reduction of magnetic units to ultra small length scales inspires efforts to look for a suitable means of controlling magnetic states. In this study we show two surface charge alteration techniques for tuning the interlayer…

Mesoscale and Nanoscale Physics · Physics 2015-09-02 Tamene R. Dasa , Valeri S. Stepanyuk

Nanoscale size-effects drastically alter the fundamental properties of semiconductors. Here, we investigate the dominant role of quantum confinement in the field-effect device properties of free-standing InAs nanomembranes with varied…

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