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Related papers: Negative Spin Valve effects in manganite/organic b…

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We study theoretically the spin-orbit interaction of electrons confined in a tubular semiconductor nanowire, between an inner semiconductor core and an outer metallic extra shell. A band off-offset potential is present at the inner…

Mesoscale and Nanoscale Physics · Physics 2026-05-01 Tudor-Gabriel Dumitru , Anna Sitek , Gunnar Thorgilsson , Sigurdur I. Erlingsson , Andrei Manolescu

Processes which flip the spin of an electron tunneling in a junction made up of magnetic electrodes are studied. It is found that: i) Magnetic impurities give a contribution which increases the resistance and lowers the magnetoresistance,…

Mesoscale and Nanoscale Physics · Physics 2009-10-30 F. Guinea

Previous studies have demonstrated spin-orbit torque (SOT) switching of Mn3Sn where the spin polarization lies in the kagome plane (configuration I). However, the critical current density ($ J_{crit}$) is unrealistically large ($…

Mesoscale and Nanoscale Physics · Physics 2023-08-17 Zhengde Xu , Xue Zhang , Yixiao Qiao , Gengchiau Liang , Shuyuan Shi , Zhifeng Zhu

We report inelastic neutron scattering results on the spin dynamics in the 50 % hole-doped manganites, Pr{1/2}Sr{1/2}MnO3 and Nd{1/2}Sr{1/2}MnO3. In the paramagnetic phase, these systems exhibit a ridge-type diffuse scattering, indicating a…

Strongly Correlated Electrons · Physics 2007-05-23 H. Kawano , R. Kajimoto , H. Yoshizawa , Y. Tomioka , H. Kuwahara , Y. Tokura

We study a triplet spin valve obtained by intercalating a triplet superconductor spacer between two ferromagnetic regions with non-collinear magnetizations. We demonstrate that the magnetoresitance of the triplet spin valve depends on the…

Mesoscale and Nanoscale Physics · Physics 2013-12-02 F. Romeo , R. Citro

We fabricated a nanolayered hybrid superconductor-ferromagnet spin-valve structure, the resistive state of which depends on the preceding magnetic field polarity. The effect is based on a strong exchange bias (about -2 kOe) on a diluted…

Vanadium based dichalcogenides, VSe$_2$, are two-dimensional materials in which magnetic Vanadium atoms are arranged in a hexagonal lattice and are coupled ferromagnetically within the plane. However, adjacent atomic planes are coupled…

Materials Science · Physics 2022-01-24 M. A. Jafari , M. Wawrzyniak-Adamczewska , S. Stagraczyński , A. Dyrdal , J. Barnaś

The effect of the AlOx barrier thickness on magnetic and morphological properties of Ta/Co/(AlOx)/Alq3/Si hybrid structures was systematically studied by means of atomic force microscopy, SQUID magnetometry and nuclear magnetic resonance…

We study the spin polarised tunnelling mechanism through magnetisation and magnetoresistance in the granular polycrystalline colossal magnetoresistive manganite, La0.55Ho0.15Sr0.3MnO3. This system has a ferromagnetic transition temperature…

Strongly Correlated Electrons · Physics 2019-08-17 P. Raychaudhuri , A. K. Nigam , R. Pinto , Sujeet Chaudhary , S. B. Roy

We present a detailed magnetothermal study of Pr(0.7)Ca(0.3)MnO(3), a perovskite manganite in which an insulator-metal transition can be driven by magnetic field, but also by pressure, visible light, x-rays, or high currents. We find that…

Condensed Matter · Physics 2009-10-31 M. Roy , J. F. Mitchell , A. P. Ramirez , P. Schiffer

We propose and theoretically analyze a novel metal-oxide-semiconductor field-effect-transistor (MOSFET) type of spin transistor (hereafter referred to as a spin MOSFET) consisting of a MOS gate structure and half-metallic-ferromagnet (HMF)…

Materials Science · Physics 2009-11-10 S. Sugahara , M. Tanaka

Electrical injection and detection of spin-polarized electrons is demonstrated for the first time in a single wafer, all-semiconductor, GaAs-based lateral spintronic device, employing p+-(Ga,Mn)As/n+-GaAs ferromagnetic Esaki diodes as spin…

Electrical control of the non-trivial topology in Weyl antiferromagnet is of great interests to develop next-generation spintronic devices. Recent works suggest that spin Hall effect can switch the topological antiferromagnetic order.…

Control and manipulation of electric current and, especially, its degree of spin polarization (spin filtering) across single molecules are currently of great interest in the field of molecular spintronics. We explore one possible strategy…

Mesoscale and Nanoscale Physics · Physics 2019-08-20 Dongzhe Li , Rajdeep Banerjee , Sourav Mondal , Ivan Maliyov , Mariya Romanova , Yannick J. Dappe , Alexander Smogunov

Voltage-controlled spintronic devices utilizing the spin degree of freedom are desirable for future applications, and may allow energy-efficient information processing. Pure spin current can be created by thermal excitations in magnetic…

We demonstrate the epitaxial growth of optical-quality electrically-gated III-V ferromagnetic quantum structures. Photoluminescence spectroscopy reveals that initially unpolarized photoexcited holes in a GaAs quantum well become…

Materials Science · Physics 2007-05-23 R. C. Myers , A. C. Gossard , D. D. Awschalom

In this letter, we report on successful electrical spin injection and detection in \textit{n}-type germanium-on-insulator (GOI) using a Co/Py/Al$_{2}$O$_{3}$ spin injector and 3-terminal non-local measurements. We observe an enhanced spin…

Recently, the authors of ref.[1], reported dynamics distortion and polaronic effects in the paramagnetic state of $La_{0.8}Ba_{0.2}Mn_{1-x}Al_xO_3$ manganites. In this comment we want to complete the phase diagram(Fig3[1]) and point out of…

Materials Science · Physics 2015-12-11 J. Ardashti Saleh , I. Abdolhosseini Sarsari , P. Kameli , H. Salamati

X-ray resonant magnetic scattering studies of rare earth magnetic ordering were performed on perovskite manganites RMnO3 (R = Dy, Gd) in an applied magnetic field. The data reveal that the field-induced three-fold polarization enhancement…

We study charge transport in a two dimensional hybrid systems consisting of nonmagnetic two dimensional electron gas with spin-orbit interaction sandwiched between a Ferromagnetic lead and a normal metallic lead (FM/2DEG/NM). An {\it…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 T. P. Pareek