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The spin pumping mechanism and associated interfacial Gilbert damping are demonstrated in ion-beam sputtered Co2FeAl (CFA) /Mo bilayer thin films employing ferromagnetic resonance spectroscopy. The dependence of the net spin current…

介观与纳米尺度物理 · 物理学 2018-02-28 Sajid Husain , Ankit Kumar , Vineet Barwal , Nilamani Behera , Serkan Akansel , Sujeet Chaudhary , Peter Svedlindh

We demonstrate dynamic spin injection into chemical vapor deposition (CVD) grown graphene by spin pumping from permalloy (Py) layers. Ferromagnetic resonance measurements at room temperature reveal a strong enhancement of the Gilbert…

介观与纳米尺度物理 · 物理学 2012-11-05 A. K. Patra , S. Singh , B. Barin , Y. Lee , J. -H. Ahn , E. del Barco , E. R. Mucciolo , B. Özyilmaz

The use of femtosecond laser pulses generated by a Ti:Sapphire laser system allows us to gain an insight into the magnetization dynamics on time scales from sub-picosecond up to 1 ns directly in the time domain. This experimental technique…

其他凝聚态物理 · 物理学 2009-11-13 J. Walowski , M. Djordjevic Kaufmann , B. Lenk , C. Hamann , J. McCord , M. Münzenberg

The enhancement of Gilbert damping observed for Ni80Fe20 (Py) films in contact with the non-magnetic metals Cu, Pd, Ta and Pt, is quantitatively reproduced using first-principles scattering theory. The "spin-pumping" theory that…

材料科学 · 物理学 2014-11-19 Yi Liu , Zhe Yuan , R. J. H. Wesselink , Anton A. Starikov , Paul J. Kelly

We experimentally investigate spin-orbit torque and spin pumping in Y$_3$Fe$_5$O$_{12}$(YIG)/Pt bilayers with ultrathin insertion layers at the interface. An insertion layer of Cu suppresses both spin-orbit torque and spin pumping, whereas…

In this work, we investigate the magnetic damping and spin pumping response of YIG-based bilayers incorporating vanadium (V) as the normal metal layer via broadband ferromagnetic resonance (FMR) measurements as a function of YIG thickness.…

介观与纳米尺度物理 · 物理学 2026-05-29 S. Elkady , A. Tlais , H. Reslan , S. Isber , M. Haidar

We investigate the spin pumping efficiency in YIG/YIG/W$_{90}$Ti$_{10}$ bilayers by measuring the thickness dependence of both the YIG and WTi layers using broadband ferromagnetic resonance (FMR) spectroscopy. The deposition of a 5-nm WTi…

材料科学 · 物理学 2025-07-10 Marielle Hachem , Zeinab Harajli , Samih Isber , Mohammad Haidar

We compare ferromagnetic resonance measurements of Permalloy Ni$_{80}$Fe$_{20}$ (Py) films sputtered onto Cu(111) films with and without a graphene (Gr) interlayer grown by chemical vapor deposition before Py deposition. A two-angle…

介观与纳米尺度物理 · 物理学 2015-03-31 Will Gannett , Mark W. Keller , Hans T. Nembach , Thomas J. Silva , Ann Chiaramonti Debay

We study the magnetization dynamics in thin ferromagnetic films and small ferromagnetic particles in contact with paramagnetic conductors. A moving magnetization vector causes \textquotedblleft pumping\textquotedblright of spins into…

介观与纳米尺度物理 · 物理学 2009-11-07 Yaroslav Tserkovnyak , Arne Brataas , Gerrit E. W. Bauer

We investigated the spin pumping damping contributed by paramagnetic layers (Pd, Pt) in both direct and indirect contact with ferromagnetic Ni$_{81}$Fe$_{19}$ films. We find a nearly linear dependence of the interface-related Gilbert…

介观与纳米尺度物理 · 物理学 2016-07-19 M. Caminale , A. Ghosh , S. Auffret , U. Ebels , K. Ollefs , F. Wilhelm , A. Rogalev , W. E. Bailey

We theoretically study spin pumping from a ferromagnetic insulator (FI) into a carbon nanotube (CNT). By employing the bosonization method, we formulate the Gilbert damping induced by the FI/CNT junction, which can be measured by…

介观与纳米尺度物理 · 物理学 2023-10-31 Kota Fukuzawa , Takeo Kato , Mamoru Matsuo , Thibaut Jonckheere , Jérôme Rech , Thierry Martin

Spin-pumping across ferromagnet/superconductor (F/S) interfaces has attracted much attention lately. Yet the focus has been mainly on s-wave superconductors-based systems whereas (high-temperature) d-wave superconductors such as YBa2Cu3O7-d…

In magnetic trilayer structures, a contribution to the Gilbert damping of ferromagnetic resonance arises from spin currents pumped from one layer to another. This contribution has been demonstrated for layers with weakly coupled, separated…

材料科学 · 物理学 2016-06-15 H. Yang , Y. Li , W. E. Bailey

We have deposited polycrystalline Re doped $(Fe_{65}Co_{35})_{100-x}Re_{x}$ (0 $\leq$ x $\leq$ 12.6 at\%) thin films grown under identical conditions and sandwiched between thin layers of Ru in order to study the phenomenon of spin pumping…

Precessing magnetization in a thin film magnetic insulator pumps spins into adjacent metals; however, this phenomenon is not quantitatively understood. We present a theory for the dependence of spin-pumping on the transverse mode number and…

介观与纳米尺度物理 · 物理学 2013-08-29 André Kapelrud , Arne Brataas

Spin pumping effect is a sensitive and well-established experimental method in two-dimensional (2D) magnetic materials. We propose that spin pumping effect can be a valuable probe for non-Fermi liquid (NFL) behaviors at the 2D interface of…

强关联电子 · 物理学 2025-03-19 Xiao-Tian Zhang , Yi-Hui Xing , Xu-Ping Yao , Yuya Ominato , Long Zhang , Mamoru Matsuo

We show that the spin pumping from ferromagnetic insulator into the adjacent metallic spin sink can be strongly stimulated by the superconducting correlations. The key physical mechanism responsible for this effect is the presence of…

超导电性 · 物理学 2020-11-18 M. A. Silaev

We demonstrate an enhancement of the spin-orbit coupling in silicon (Si) thin films by doping with bismuth (Bi), a heavy metal, using ion implantation. Quantum corrections to conductance at low temperature in phosphorous-doped Si before and…

介观与纳米尺度物理 · 物理学 2018-10-24 F. Rortais , S. Lee , R. Ohshima , S. Dushenko , Y. Ando , M. Shiraishi

The ferromagnetic resonance of thin sputtered Ni80Fe20 films grown on Nb is measured. By varying the temperature and thickness of the Nb the role of the superconductivity on the whole ferromagnetic layer in these heterostructures is…

超导电性 · 物理学 2009-11-13 C. Bell , S. Milikisyants , M. Huber , J. Aarts

Spin dynamics of a metallic ferromagnetic film imbedded between normal metal layers is studied using the spin-pumping theory of Tserkovnyak et al. [Phys. Rev. Lett. 88, 117601 (2002)]. The scattering matrix for this structure is obtained…

介观与纳米尺度物理 · 物理学 2007-05-23 E. Simanek
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