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Recent observations of large unconventional spin-orbit torques in van der Waals (vdW) materials are driving intense interest for energy-efficient spintronic applications. A key limitation of ferromagnet (FM)/vdW heterostructures is their…

Pure spin current based research is mostly focused on ferromagnet (FM)/heavy metal (HM) system. Because of the high spin orbit coupling (SOC) these HMs exhibit short spin diffusion length and therefore possess challenges for device…

Mesoscale and Nanoscale Physics · Physics 2021-11-09 Purbasha Sharangi , Braj Bhusan Singh , Sagarika Nayak , Subhankar Bedanta

Although both theoretical predications and experimental observations demonstrated that the damping factor is anisotropic at ferromagnet/semiconductor interface with robust interfacial spin-orbit coupling, it is not well understood whether…

Materials Science · Physics 2018-10-01 Yan Li , Yang Li , Qian Liu , Zhe Yuan , Wei He , Hao-Liang Liu , Ke Xia , Wei Yu , Xiang-Qun Zhang , Zhao-Hua Cheng

Mechanical stacking of two dissimilar materials often has surprising consequences for heterostructure behavior. In particular, a two-dimensional electron gas (2DEG) is formed in the heterostructure of the topological crystalline insulator…

It is shown that, upon the electron quantum transport via the nanostructure containing a spin dimer, the spin-flip processes caused by the s-f exchange interaction between electron and dimer spins lead to the Fano resonance effects. An…

Mesoscale and Nanoscale Physics · Physics 2011-09-05 Valery V. Val'kov , Sergey V. Aksenov

We propose an electrically driven spin injector into normal metals and semiconductors, which is based on a magnetic tunnel junction (MTJ) subjected to a microwave voltage. Efficient functioning of such an injector is provided by…

Mesoscale and Nanoscale Physics · Physics 2020-09-16 A. I. Nikitchenko , N. A. Pertsev

Spin electronic structure of graphene pi-states and Pt 5d-states for the Graphene/Pt interface has been investigated. Here, we report a large induced spin-orbit splitting (~70-100 meV) of graphene pi-states with formation of non-degenerated…

Mesoscale and Nanoscale Physics · Physics 2013-12-30 A. M. Shikin , A. A. Rybkina , A. G. Rybkin , I. I. Klimovskikh , P. N. Skirdkov , K. A. Zvezdin , A. K. Zvezdin

Terahertz (THz) spin-to-charge conversion has become an increasingly important process for THz pulse generation and as a tool to probe ultrafast spin interactions at magnetic interfaces. However, its relation to traditional, steady state,…

We report the observation of ferromagnetic resonance-driven spin pumping signals at room temperature in three-dimensional topological insulator thin films -- Bi2Se3 and (Bi,Sb)2Te3 -- deposited by molecular beam epitaxy on yttrium iron…

The role of current induced effective magnetic field in ultrathin magnetic heterostructures is increasingly gaining interest since it can provide efficient ways of manipulating magnetization electrically. Two effects, known as the Rashba…

3-D topological insulators (TI) with large spin Hall conductivity have emerged as potential candidates for spintronic applications. Here, we report spin to charge conversion in bilayers of amorphous ferromagnet (FM) Fe_{78}Ga_{13}B_{9}…

The electron transmission $T$ is evaluated through waveguides, in which the strength of the spin-orbit interaction(SOI) $\alpha$ is varied periodically, using the transfer-matrix technique. It is shown that $T$ exhibits a {\it…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 X. F. Wang , P. Vasilopoulos

The transverse magnetoresistance of the Bechgaard salt (TMTSF)$_2$PF$_6$ has been measured for various pressures, with the field up to 24 T parallel to the lowest conductivity direction c$^{\ast}$. A quadratic behavior is observed in the…

Strongly Correlated Electrons · Physics 2009-11-07 N. Matsunaga , K. Yamashita , H. Kotani , K. Nomura , T. Sasaki , T. Hanajiri , J. Yamada , S. Nakatsuji , H. Anzai

This paper presents the frequency dependence of the spin current emission in a hybrid ferrimagnetic insulator/normal metal system. The system is based on a ferrimagnetic insulating thin film of Yttrium Iron Garnet (YIG, 200 nm) grown by…

Materials Science · Physics 2015-06-05 Vincent Castel , Jamal Ben Youssef , Nynke Vlietstra , Bart van Wees

Current-induced spin-orbit torque (SOT) has emerged as a promising method for achieving energy-efficient magnetisation switching in advanced spintronic devices. Over the past two decades, researchers have primarily focused on enhancing spin…

We investigate pure spin pumping in graphene by imposing a ferromagnet (F) with rotating magnetization on top of it. Using the generalized scattering approach for adiabatic spin pumping, we obtain the spin current pumped through magnetic…

Mesoscale and Nanoscale Physics · Physics 2015-07-29 Mojtaba A. Rahimi , Ali G. Moghaddam

The interlayer exchange coupling confers specific properties to Synthetic Antiferromagnets that make them suitable for several applications of spintronics. The efficient use of this magnetic configuration requires an in-depth understanding…

Materials Science · Physics 2022-11-07 A. Mouhoub , F. Millo , C. Chappert , J. -V. Kim , J. Létang , A. Solignac , T. Devolder

Spin angular momentum transfer in magnetic bilayers offers the possibility of ultrafast and low-loss operation for next-generation spintronic devices. We report the field- and temperature- dependent measurements on the magnetization…

Materials Science · Physics 2023-01-03 X. Liu , P. Liu , H. C. Yuan , J. Y. Shi , H. L. Wang , S. H. Nie , F. Jin , Z. Zheng , X. Z. Yu , J. H. Zhao , H. B. Zhao , G. Lüpke

We discuss a novel physical mechanism which gives rise to a giant magnetoconductivity in non-centrosymmetric superconducting films. This mechanism is caused by a combination of spin-orbit interaction and inversion symmetry breaking in the…

Superconductivity · Physics 2021-12-15 M. Smith , A. V. Andreev , B. Z. Spivak

The spin-transfer effect has been studied in magnetic tunnel junctions (PtMn/CoFe/Ru/CoFe/Al2O3/CoFe/NiFe) with dimensions down to 0.1x0.2 um2 and resistance-area product RA in the range of 0.5-10 Ohm m2 (dR/R=1-20%). Current-induced…

Other Condensed Matter · Physics 2009-11-11 Yiming Huai , Frank Albert , Paul Nguyen , Mahendra Pakala , Thierry Valet