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Co$_3$Sn$_2$S$_2$ has recently emerged as a ferromagnetic Weyl semi-metal. Theoretical investigation of the spin-split bands predicted half metalicity in the compound. Here, we report the detection of a spin polarized supercurrent through a…

We present a microscopic theory of coherent quantum transport through a superconducting film between two ferromagnetic electrodes. The scattering problem is solved for the general case of ferromagnet/superconductor/ferromagnet (FSF)…

Superconductivity · Physics 2015-06-24 Milos Bozovic , Zoran Radovic

Magnetic $p$-$n$ junction diodes are fabricated to investigate spin-polarized electron transport. The injection of spin-polarized electrons in a semiconductor is achieved by driving a current from a ferromagnetic injector (Fe), into a bulk…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Peifeng Chen , Juergen Moser , Philipp Kotissek , Janusz Sadowski , Marcus Zenger , Dieter Weiss , Werner Wegscheider

Mn doped semiconductors are extremely interesting systems due to their novel magnetic properties suitable for the spintronics applications. It has been shown recently by both theory and experiment that Mn doped GaN systems have a very high…

Materials Science · Physics 2016-08-31 B. Sanyal , O. Bengone , S. Mirbt

Within the framework of the recently introduced multi-nanoparticle power-series expansion method for the polarized small-angle neutron scattering (SANS) cross section, we present analytical expressions for the polarized SANS observables…

Materials Science · Physics 2024-04-25 Michael P. Adams , Evelyn P. Sinaga , Stefan Liscak , Andreas Michels

Exciton spin and related optical polarization in self-assembled InAs/In$_{0.53}$Ga$_{0.23}$Al$_{0.24}$As/InP(001) quantum dashes emitting at 1.55 {\mu}m are investigated by means of polarization- and time-resolved photoluminescence, as well…

Mesoscale and Nanoscale Physics · Physics 2018-07-25 M. Syperek , Ł. Dusanowski , M. Gawełczyk , G. Sęk , A. Somers , J. P. Reithmaier , S. Höfling , J. Misiewicz

Doping nonmagnetic semiconductors with magnetic impurities is a feasible way to obtain diluted magnetic semiconductors (DMSs). It is generally accepted that for the most extensively studied DMS, (Ga, Mn)As, its highest Curie temperature…

Materials Science · Physics 2025-05-08 Xiang Li , Jia-Wen Li , Jing-Yang You , Gang Su , Bo Gu

Angular Distributions for the target spin-dependent observables A$_{0y}$, A$_{xx}$, and A$_{yy}$ have been measured using polarized proton beams at several energies between 2 and 6 MeV and a spin-exchange optical pumping polarized $^3$He…

Nuclear Experiment · Physics 2015-03-13 T. V. Daniels , C. W. Arnold , J. M. Cesaratto , T. B. Clegg , A. H. Couture , H. J. Karwowski , T. Katabuchi

With the aid of the quasiclassical Eilenberger formalism we develop a theory of non-local electron transport across three-terminal ballistic normal-superconducting-normal (NSN) devices with spin-active NS interfaces. The phenomenon of…

Superconductivity · Physics 2010-01-21 Mikhail S. Kalenkov , Andrei D. Zaikin

Systematic studies of the NdFeAsOF superconducting energy gap via the point-contact Andreev-reflection (PCAR) spectroscopy are presented. The PCAR conductance spectra show at low temperatures a pair of gap-like peaks at about 4 - 7 mV…

Superconductivity · Physics 2009-01-08 P. Samuely , P. Szabo , Z. Pribulova , M. E. Tillman , S. Bud'ko , P. C. Canfield

Various spin observables (analyzing powers and spin-correlation parameters) in $pd$ elastic scattering at $T_p = 800-1000$ MeV are analyzed within the framework of the refined Glauber model. The theoretical model uses as input…

Nuclear Theory · Physics 2020-06-24 M. N. Platonova , V. I. Kukulin

Neutron diffraction, polarized neutron transmission, and small angle neutron scattering have been used to investigate the crystal structure and nature of the magnetic order in a polycrystalline sample of RuSr2Eu1.2Ce0.8Cu2O10. The sample…

Superconductivity · Physics 2009-11-11 J. W. Lynn , Y. Chen , Q. Huang , S. K. Goh , G. V. M. Williams , J. L. Tallon

Historically, comprehensive studies of dilute ferromagnetic semiconductors, e.g., $p$-type (Cd,Mn)Te and (Ga,Mn)As, paved the way for a quantitative theoretical description of effects associated with spin-orbit interactions in solids, such…

Materials Science · Physics 2018-05-09 M. Sawicki , O. Proselkov , C. Sliwa , P. Aleshkevych , J. Z. Domagala , J. Sadowski , T. Dietl

We investigated the nature of the magnetic phase transition in the Ge/1-x-y/Sn/x/Mn/y/Te mixed crystals with chemical composition changing in the range of 0.083 < x < 0.142 and 0.012 < y < 0.119. The DC magnetization measurements performed…

Materials Science · Physics 2012-03-15 L. Kilanski , R. Szymczak , W. Dobrowolski , K. Szałowski , V. E. Slynko , E. I. Slynko

We demonstrate electrical electron spin injection via interband tunneling in ferromagnetic/nonmagnetic semiconductor Esaki diodes. An interband tunnel junction between ferromagnetic p+-(Ga,Mn)As and nonmagnetic n+-GaAs under reverse-bias…

Materials Science · Physics 2007-05-23 Makoto Kohda , Yuzo Ohno , Koji Takamura , Fumihiro Matsukura , Hideo Ohno

We investigate the spin-dependent transport properties of two-dimensional electron gas (2DEG) systems formed in diluted magnetic semiconductors and in the presence of Rashba spin-orbit interaction in the framework of the scattering matrix…

Materials Science · Physics 2009-11-13 Anh T. Ngo , J. M. Villas-Boas , Sergio E. Ulloa

We report nearly complete preservation of "spin memory" between optical absorption and photoluminescence (PL) in nanometer slabs of GaSe pumped with up to 0.2 eV excess energy. At cryogenic temperatures, the initial degree of circular…

Mesoscale and Nanoscale Physics · Physics 2015-05-22 Yanhao Tang , Wei Xie , Krishna C. Mandal , John A. McGuire , Chih-Wei Lai

This review compiles results of experimental and theoretical studies on thin films and quantum structures of semiconductors with randomly distributed Mn ions, which exhibit spintronic functionalities associated with collective ferromagnetic…

Materials Science · Physics 2014-04-02 Tomasz Dietl , Hideo Ohno

The influence of temperature and transport conditions on the electron spin relaxation in lightly doped n-type GaAs semiconductors is investigated. A Monte Carlo approach is used to simulate electron transport, including the evolution of…

Statistical Mechanics · Physics 2011-12-20 Stefano Spezia , Dominique Persano Adorno , Nicola Pizzolato , Bernardo Spagnolo

We report on efficient spin injection in p-doped InGaAs/GaAs quantum-dot (QD) spin light emitting diode (spin-LED) under zero applied magnetic field. A high degree of electroluminescence circular polarization (Pc) ~19% is measured in…