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The emergence of two-dimensional (2D) magnetic crystals and moir\'e engineering has opened the door for devising new magnetic ground states via competing interactions in moir\'e superlattices. Although a suite of interesting phenomena,…

The spin polarization P of the transport current through the interface between superconducting Al and ferromagnetic Fe is determined by means of Andreev reflection at nanostructured point contacts. We observe a systematic decrease of P with…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. Stokmaier , G. Goll , D. Weissenberger , C. Sürgers , H. v. Löhneysen

Polycrystalline samples of RE2O2CO3 (RE = Pr, Nd, Gd, Tb, Dy, Ho, Er, and Yb) with a unique rare-earth bilayer of triangular lattice were synthesized and studied by DC and AC magnetic susceptibility. Data reveals various magnetic ground…

Strongly Correlated Electrons · Physics 2024-07-12 Aya N. Rutherford , Chengkun Xing , Haidong Zhou , Qing Huang , Stuart Calder

Spin transitions driven by a periodically varying electric potential in dilute fluorinated graphene quantum dots are investigated. Flakes of monolayer graphene are considered as well as electrostatic electron traps induced in bilayer…

Mesoscale and Nanoscale Physics · Physics 2016-12-22 D. P. Żebrowski , F. M. Peeters , B. Szafran

The spin dynamics of the ferromagnetic pinned layer of ferro-antiferromagnetic coupled NiFe/MnNi bilayers is investigated in a broad frequency range (30 MHz-6 GHz). A phenomenological model based on the Landau-Lifshitz equation for the…

Condensed Matter · Physics 2009-11-10 David Spenato , Jamal Ben Youssef , Henri Le Gall

The magnetic properties of (111)-oriented Rh/Co/Pt and Pd/Co/Pt multilayers are investigated by first-principles calculations. We focus on the interlayer exchange coupling, and identify thicknesses and composition where a typical…

Materials Science · Physics 2018-10-24 Hongying Jia , Bernd Zimmermann , Stefan Blügel

We investigate magnetic domain walls in a single fcc Mn layer on Re(0001) employing spin-polarized STM, atom manipulation, and spin dynamics simulations. The low symmetry of the row-wise antiferromagnetic (1Q) state leads to a new type of…

Mesoscale and Nanoscale Physics · Physics 2021-06-16 Jonas Spethmann , Martin Grünebohm , Roland Wiesendanger , Kirsten von Bergmann , André Kubetzka

A combination of small-cluster exact-diagonalization calculations and a well-controlled approximative method is used to examine the ground-state phase diagrams of the spin-one-half Falicov-Kimball model extended by the spin-dependent…

Strongly Correlated Electrons · Physics 2015-06-25 Martin Zonda

The magnetic ground state of nanosized systems such as Fe double chains, recently shown to form in the early stages of Fe deposition on Ir(100), is generally nontrivial. Using ab initio density functional theory we find that the straight…

Materials Science · Physics 2009-11-13 R. Mazzarello , E. Tosatti

The effect of the Dzyaloshinsky-Moriya interaction on the magnetic structure of an ordered FePt monolayer deposited on Pt (111) surface has been investigated. In the ground state, the pronounced anisotropic geometry of the FePt layer with…

Mesoscale and Nanoscale Physics · Physics 2015-08-03 S. Polesya , S. Mankovsky , S. Bornemann , D. Ködderitzsch , J. Minár , H. Ebert

Various noncollinear spin textures and magnetic phases have been predicted in twisted two-dimensional CrI$_3$ due to competing ferromagnetic (FM) and antiferromagnetic (AFM) interlayer exchange from moir\'e stacking - with potential…

Inspired by the recent discovery of high-temperature superconductivity in bilayer nickelates, we investigate the role of magnetism emerging from a hypothetical insulating $d^8$ parent state. We demonstrate that due to the interplay of…

Strongly Correlated Electrons · Physics 2026-02-05 Hanbit Oh , Yi-Ming Wu , Julian May-Mann , Yijun Yu , Harold Y. Hwang , Ya-Hui Zhang , S. Raghu

We study the formation of ferromagnetic and magnetic polaron states in weakly doped heterobilayer transition metal dichalcogenides in the ``heavy fermion'' limit in which one layer hosts a dense set of local moments and the other hosts a…

Strongly Correlated Electrons · Physics 2024-11-12 Daniele Guerci , J. H. Pixley , Andrew J. Millis

Many Heusler compounds possess magnetic properties well-suited for applications as spintronic materials. The pseudo-binary Mn$_{0.5}$Fe$_{0.5}$Ru$_2$Sn, formed as a solid solution of two full Heuslers, has recently been shown to exhibit…

Materials Science · Physics 2017-10-06 Elizabeth Decolvenaere , Michael Gordon , Ram Seshadri , Anton Van der Ven

We employ correlated density-functional theory methods (DFT + Hubbard $U$) to investigate the spin-density wave state of the bilayer Ruddlesden-Popper (RP) nickelate La$_{3}$Ni$_{2}$O$_{7}$ which becomes superconducting under pressure. We…

Strongly Correlated Electrons · Physics 2024-12-17 Harrison LaBollita , Victor Pardo , Michael R. Norman , Antia S. Botana

Several new features arise in the ground-state phase diagram of a spin-1 condensate trapped in an optical trap when the magnetic dipole interaction between the atoms is taken into account along with confinement and spin precession. The…

Quantum Gases · Physics 2010-02-06 Jonas A. Kjäll , Andrew M. Essin , Joel E. Moore

We performed SQUID and FMR magnetometry experiments to clarify the relationship between two reported magnetic exchange effects arising from interfacial spin-polarized charge transfer within ferromagnetic metal (FM)/molecule bilayers: the…

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

Growth, electronic and magnetic properties of $\gamma'$-Fe$_{4}$N atomic layers on Cu(001) are studied by scanning tunneling microscopy/spectroscopy and x-ray absorption spectroscopy/magnetic circular dichroism. A continuous film of ordered…

Materials Science · Physics 2017-06-21 Y. Takahashi , T. Miyamachi , S. Nakashima , N. Kawamura , Y. Takagi , M. Uozumi , V. Antonov , T. Yokoyama , A. Ernst , F. Komori

We investigated the nonreciprocal spin-wave properties, including the frequency shift, of a helical equilibrium state in a versatile CoFeB/NiFe bilayer. Through an extension of the dynamic matrix formalism (developed in this work) to an…

Mesoscale and Nanoscale Physics · Physics 2026-04-02 Claudia Negrete , Omar J. Suarez , Attila Kákay , Jorge A. Otálora