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We study the magnetization dynamics in a ferromagnet-insulator-superconductor tunnel junction and the associated buildup of the electrical polarization. We show that for an open circuit, the induced voltage varies strongly and…

Mesoscale and Nanoscale Physics · Physics 2013-09-02 Mircea Trif , Yaroslav Tserkovnyak

We present results of a set of experiments to investigate the effect of dissipative external electromagnetic environment on tunneling in linear arrays of junctions in the weak tunneling regime. The influence of this resistance decreases as…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Sh. Farhangfar , A. J. Manninen , J. P. Pekola

We study the formation of inhomogeneous magnetization texture in the vicinity of a tunnel junction between two ferromagnetic wires nominally in the antiparallel configuration and its influence on the magnetoresistance of such a device. The…

Strongly Correlated Electrons · Physics 2008-11-21 Igor Kuzmenko , Vladimir Fal'ko

In this paper we analyze different contributions to the magnetoresistance of magnetic tunneling junctions at low voltages. A substantial fraction of the resistance drop with voltage can be ascribed to variations of the density of states and…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 C. A. Dartora , G. G. Cabrera

Tunneling Magnetoresistance between two ferrromagnets is an issue of fundamental importance in spintronics. In this work, we show that tunneling magnetoresistance can also emerge in junctions composed of ferromagnets and time-reversal…

Mesoscale and Nanoscale Physics · Physics 2016-02-09 Zhongbo Yan , Shaolong Wan

We theoretically study the recently observed tunnel-barrier-enhanced dc voltage signals generated by magnetization precession in magnetic tunnel junctions. While the spin pumping is suppressed by the high tunneling impedance, two…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Yaroslav Tserkovnyak , T. Moriyama , John Q. Xiao

We study interlayer exchange interaction in magnetic tunnel junctions with ferroelectric barrier. We focus on the influence of image forces on the voltage dependence of the interlayer magnetic interaction (magneto-electric effect). The…

Mesoscale and Nanoscale Physics · Physics 2018-01-11 O. G. Udalov , I. S. Beloborodov

We present the first measurements of the third moment of the voltage fluctuations in a conductor. This technique can provide new and complementary information on the electronic transport in conducting systems. The measurement was performed…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 B. Reulet , J. Senzier , D. E. Prober

We present a formula for tunneling conductance in ballistic ferromagnet/ferromagnetic insulator/superconductor junctions where the superconducting state has opposite spin pairing symmetry. The formula can involve correctly a ferromagnetism…

Superconductivity · Physics 2015-03-20 Nobukatsu Yoshida , Masashi Yamashiro

The review is devoted to the fundamental aspects and characteristic features of the magnetoelectric effects, reported in the literature on Josephson junctions (JJs). The main focus of the review is on the manifestations of the direct and…

Superconductivity · Physics 2022-07-20 I. V. Bobkova , A. M. Bobkov , M. A. Silaev

We report the electrical detection of magnetization dynamics in an Al/AlOx/Ni80Fe20/Cu tunnel junction, where a Ni80Fe20 ferromagnetic layer is brought into precession under the ferromagnetic resonance (FMR) conditions. The dc voltage…

Materials Science · Physics 2008-02-26 T. Moriyama , R. Cao , X. Fan , G. Xuan , B. K. Nikolic , Y. Tserkovnyak , J. Kolodzey , John Q. Xiao

Effects of the electron-electron interaction on tunneling into a metal in ultra-high magnetic field (ultra-quantum limit) are studied. The range of the interaction is found to have a decisive effect both on the nature of the field-induced…

Strongly Correlated Electrons · Physics 2007-10-30 Shan-Wen Tsai , D. L. Maslov , L. I. Glazman

We propose a conceptually new way to gather information on the electron bands of buried metal(semiconductor)/insulator interfaces. The bias dependence of low frequency noise in Fe$_{1-x}$V$_{x}$/MgO/Fe (0 $<$ x $<$ 0.25) tunnel junctions…

Mesoscale and Nanoscale Physics · Physics 2015-01-23 Farkhad G. Aliev , Juan Pedro Cascales , Ali Hallal , Mairbek Chshiev , Stephane Andrieu

The interplay between the electron transport in metal/ferroelectric/metal junctions with ultrathin ferroelectric barriers and the polarization state of a barrier is investigated. Using a model which takes into account screening of…

Other Condensed Matter · Physics 2009-11-11 M. Ye. Zhuravlev , R. F. Sabirianov , S. S. Jaswal , E. Y. Tsymbal

We present a semiclassical study of a transport process, the tunneling, in the presence of a magnetic field and a dissipative environment. We have found that the problem can be mapped onto an effective one-dimensional one, and the tunneling…

Condensed Matter · Physics 2015-06-25 Ping Ao

Precisely engineered tunnel junctions exhibit a long sought effect that occurs when the energy of the electron is comparable to the potential energy of the tunneling barrier. The resistance of metal-insulator-metal tunnel junctions…

Materials Science · Physics 2007-09-25 Casey W. Miller , Zhi-Pan Li , Ivan K. Schuller , R. W. Dave , J. M. Slaughter , Johan Akerman

Frequency dependence of magnetoelectric (ME) coupling is investigated in trilayers of ferromagnetic alloy and piezoelectric lead zirconate titanate (PZT). The ferromagnetic phases studied include permendur, a soft magnet with high…

Materials Science · Physics 2007-05-23 U. Laletsin , N. Paddubnaya , G. Srinivasan , M. I. Bichurin

The dynamics of a single spin embedded in a the tunnel junction between ferromagnetic contacts is strongly affected by the exchange coupling to the tunneling electrons. Moment reversal of the local spin induced by the bias voltage across…

Mesoscale and Nanoscale Physics · Physics 2008-06-04 J. Fransson

Interplay between magnetization dynamics and electric current in a conducting ferromagnet is theoretically studied based on a microscopic model calculation. First, the effects of the current on magnetization dynamics (spin torques) are…

Mesoscale and Nanoscale Physics · Physics 2017-08-23 H. Kohno , S. Kawabata , T. Noguchi , S. Ueta , J. Shibata , G. Tatara

Low temperature (10K) high voltage bias dynamic conductivity (up to 2.7V) and shot noise (up to 1V) were studied in epitaxial Fe(100)/Fe-C/MgO(100)/Fe(100) magnetic tunnel junctions, as a function of the magnetic state. The junctions show…

Mesoscale and Nanoscale Physics · Physics 2008-02-26 R. Guerrero , D. Herranz , F. G. Aliev , F. Greullet , C. Tiusan , M. Hehn , F. Montaigne
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