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相关论文: Stacking-dependent spin interactions in Pd/Fe bila…

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For magnonics and spintronics applications, the spin polarization ($P$) of a transport current and the magnetic damping ($\alpha$) play a crucial role, e.g. for magnetization dynamics and magnetization switching applications. In particular,…

Magnetic adatom chains on superconductors provide a platform to explore correlated spin states and emergent quantum phases. Using low-temperature scanning tunneling spectroscopy, we study the distance-dependent interaction between Fe atoms…

介观与纳米尺度物理 · 物理学 2026-03-31 Lisa M. Rütten , Eva Liebhaber , Gael Reecht , Kai Rossnagel , Katharina J. Franke

We present detailed investigations of the magnetic properties of an Fe monolayer on W and Ta (110) surfaces based on the ab initio screened Korringa-Kohn-Rostoker method. By calculating tensorial exchange coupling coefficients, the ground…

强关联电子 · 物理学 2015-05-01 Levente Rózsa , László Udvardi , László Szunyogh , István A. Szabó

We present a simultaneous investigation of coherent spin dynamics in both localized and itinerant carriers in Fe/GaAs heterostructures using ultrafast and spin-resolved pump-probe spectroscopy. We find that for excitation densities that…

介观与纳米尺度物理 · 物理学 2018-10-31 Yu-Sheng Ou , N. J. Harmon , Patrick Odenthal , R. K. Kawakami , M. E. Flatté , E. Johnston-Halperin

Using first-principles calculations, we study the magnetic properties of a Co monolayer on a Pt(111) surface with a capping monolayer of selected $5d$ elements (Re, Os, Ir, Pt and Au). First we determine the tensorial exchange interactions…

材料科学 · 物理学 2018-04-18 E. Simon , L. Rózsa , K. Palotás , L. Szunyogh

Spin-orbit torques in ferromagnetic (FM)/non-magnetic (NM) heterostructures offer more energy-efficient means to realize spin-logic devices; however, their strengths are determined by the heterostructure interface. This work examines…

We present results of density-functional calculations on the magnetic properties of Cr, Mn, Fe and Co nano-clusters (1 to 9 atoms large) supported on Cu(001) and Cu(111). The inter-atomic exchange coupling is found to depend on competing…

材料科学 · 物理学 2015-05-14 Phivos Mavropoulos , Samir Lounis , Stefan Blügel

Stacking-dependent magnetism in two-dimensional van der Waals materials offers an effective route for controlling magnetic order without chemical modification. Here, we present a combined first-principles and finite-temperature study of…

材料科学 · 物理学 2026-05-19 Soumyajit Sarkar , Soham Chandra

We investigate the interplay of magnetic fluctuations and Cooper pairing in twisted bilayer graphene from a purely microscopic model within a large-scale tight-binding approach resolving the \AA ngstr\"om scale. For local onsite repulsive…

超导电性 · 物理学 2021-01-13 Ammon Fischer , Lennart Klebl , Carsten Honerkamp , Dante M. Kennes

Using first-principles density functional theory (DFT) combined with atomistic spin simulations, we explore the possibility of realizing zero-field isolated skyrmions in three 4$d$/Co atomic bilayers -- Rh/Co, Pd/Co, and Ru/Co -- grown on…

材料科学 · 物理学 2026-02-02 Moinak Ghosh , Stefan Heinze , Souvik Paul

We present a comprehensive study on the magnetization reversal in Fe/NiFe bilayer system by alternating the order of the magnetic layers. All the samples show growth-induced uniaxial magnetic anisotropy due to oblique angle deposition…

Using ab initio density functional theory (DFT), we demonstrated the possibility of controlling the magnetic ground-state properties of bilayer CrCl$_{3}$ by means of mechanical strains and electric fields. In principle, we investigated the…

材料科学 · 物理学 2023-04-04 Ali Ebrahimian , Anna Dyrdał , Alireza Qaiumzadeh

PdFe/Ir(111) has attracted tremendous attention for next-generation spintronics devices due to existence of magnetic skyrmions with the external magnetic field. Our density functional theoretical calculations in combination with spin…

材料科学 · 物理学 2024-07-17 Banasree Sadhukhan , Anders Bergman , Johan Hellsvik , Patrik Thunström , Anna Delin

We investigate the two-particle spin entanglement in magnetic nanoclusters described by the periodic Anderson model. An entanglement phase diagram is obtained, providing a novel perspective on a central property of magnetic nanoclusters,…

强关联电子 · 物理学 2009-11-11 Peter Samuelsson , Claudio Verdozzi

Magnetometry measurements of Fe/U and Ni/U bilayer systems reveal a non-monotonic dependence of the magnetic anisotropy for U thicknesses in the range 0 nm - 8 nm, with the Fe/U bilayers showing a more prominent effect as compared to Ni/U.…

介观与纳米尺度物理 · 物理学 2021-03-24 E. R. Gilroy , M. -H. Wu , M. Gradhand , R. Springell , C. Bell

Using first-principles calculations, we demonstrate that the magnetic exchange interaction and the magnetocrystalline anisotropy of biatomic Fe chains grown in the trenches of the 5x1 reconstructed Ir(001) surface depend sensitively on the…

介观与纳米尺度物理 · 物理学 2015-05-14 Yuriy Mokrousov , Alexander Thiess , Stefan Heinze

We determined the parameters of a classical spin Hamiltonian describing an Fe monolayer on Pd(111) surface with a Pt_{1-x}Ir_{x} alloy overlayer from ab initio calculations. While the ground state of the system is ferromagnetic for x=0.00,…

介观与纳米尺度物理 · 物理学 2016-10-12 Levente Rózsa , András Deák , Eszter Simon , Rocio Yanes , László Udvardi , László Szunyogh , Ulrich Nowak

Voltages generated from inverse spin Hall and anisotropic magneto-resistance effects via spin pumping in ferromagnetic (F)/non-magnetic (N) bilayers are investigated by means of a broadband ferromagnetic resonance approach. Varying the…

介观与纳米尺度物理 · 物理学 2015-06-15 Vincent Vlaminck , John E. Pearson , Sam D. Bader , Axel Hoffmann

Using the model of classical Heisenberg exchange and Dzyaloshinskii-Moriya (DM) interaction we show that the ground state of B20 FeGe chiral magnet is a superposition of twisted helical spin-density waves formed by different sublattices of…

材料科学 · 物理学 2021-08-18 S. Grytsiuk , S. Blügel

We have used spin-polarized scanning tunneling spectroscopy to observe the spin-polarization state of individual Fe and Cr atoms adsorbed onto Co nanoislands. Both of these magnetic adatoms exhibit stationary out-of-plane spin-polarization…

材料科学 · 物理学 2009-11-13 Y. Yayon , V. W. Brar , L. Senapati , S. C. Erwin , M. F. Crommie