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Arrays of 10 nm-diameter point contacts of exchange-coupled spin-majority/spin-minority ferromagnetic metals, integrated into infrared-terahertz range photon resonators, are fabricated and measured electrically and optically. Giant,…

Mesoscale and Nanoscale Physics · Physics 2013-11-27 V. Korenivski , A. Iovan , A. Kadigrobov , R. I. Shekhter

We present a complete description of spin injection and detection in Fe/Al_xGa_{1-x}As/GaAs heterostructures for temperatures from 2 to 295 K. Measurements of the steady-state spin polarization in the semiconductor indicate three…

Materials Science · Physics 2009-11-10 C. Adelmann , X. Lou , J. Strand , C. J. Palmstrom , P. A. Crowell

The measurement was performed with circularly polarized photons incident on longitudinally polarized target in Hall B at the Thomas Jefferson National Accelerator Facility. The helicity asymmetry E for $\vec{\gamma}\vec{p}\to\pi^0p$ was…

Nuclear Experiment · Physics 2016-06-22 Diane Schott , William Briscoe , Igor Strakovsky

The influence has been studied of the ionization laser polarization on the effective temperature of an ultracold electron source, which is based on near-threshold photoionization. This source is capable of producing both high-intensity and…

Atomic Physics · Physics 2013-12-24 W. J. Engelen , D. J. Bakker , O. J. Luiten , E. J. D. Vredenbregt

Detailed Raman spectroscopy studies on polycrystalline Sr1-xPrxTiO3 (x=0.01, 0.025, 0.05, 0.075, 0.09, 0.13, 0.15, 0.17) samples are reported elucidating the microscopic mechanism of relaxor ferroelectrics. The polar mode was observed upto…

Materials Science · Physics 2019-06-26 Vivek Dwij , Binoy Krishna De , Shekhar Tyagi , Gaurav Sharma , V. G. Sathe

Pulsed electrically-detected magnetic resonance of phosphorous (31P) in bulk crystalline silicon at very high magnetic fields (B > 8.5 T) and low temperatures (T = 2.8 K) is presented. We find that the spin-dependent capture and reemission…

Quantum Physics · Physics 2009-09-25 G. W. Morley , D. R. McCamey , H. A. Seipel , L. -C. Brunel , J. van Tol , C. Boehme

The negatively charged boron-vacancy center ($\mathrm{V}_{\mathrm{B}}^-$) in hexagonal boron nitride (hBN) has recently emerged as a highly promising quantum sensor. Compared to the nitrogen-vacancy (NV) center in diamond, the change with…

We present the final results for the deuteron spin structure functions obtained from the full data set collected with Jefferson Lab's CLAS in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2 and 5.8 GeV were scattered from…

Nuclear Experiment · Physics 2015-11-11 N. Guler , R. G. Fersch , S. E. Kuhn , P. Bosted , K. A. Griffioen , C. Keith , R. Minehart , Y. Prok , K. P. Adhikari , D. Adikaram , M. J. Amaryan , M. D. Anderson , S. Anefalos Pereira , J. Ball , M. Battaglieri , V. Batourine , I. Bedlinskiy , W. J. Briscoe , W. K. Brooks , S. Bultmann , V. D. Burkert , D. S. Carman , A. Celentano , S. Chandavar , G. Charles , L. Colaneri , P. L. Cole , M. Contalbrigo , D. Crabb , V. Crede , A. D Angelo , N. Dashyan , A. Deur , C. Djalali , G. E. Dodge , R. Dupre , A. El Alaoui , L. El Fassi , L. Elouadrhiri , P. Eugenio , G. Fedotov , S. Fegan , A. Filippi , J. A. Fleming , T. A. Forest , B. Garillon , M. Garcon , N. Gevorgyan , G. P. Gilfoyle , K. L. Giovanetti , F. X. Girod , J. T. Goetz , E. Golovatch , R. W. Gothe , M. Guidal , L. Guo , K. Hafidi , H. Hakobyan , N. Harrison , M. Hattawy , K. Hicks , D. Ho , M. Holtrop , S. M. Hughes , C. E. Hyde , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , H. S. Jo , K. Joo , S. Joosten , D. Keller , M. Khandaker , A. Kim , W. Kim , A. Klein , F. J. Klein , V. Kubarovsky , S. V. Kuleshov , K. Livingston , H. Y. Lu , I. J. D. MacGregor , B. McKinnon , M. Mirazita , V. Mokeev , R. A. Montgomery , A Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , L. A. Net , I. Niculescu , M. Osipenko , A. I. Ostrovidov , K. Park , E. Pasyuk , S. Pisano , O. Pogorelko , J. W. Price , S. Procureur , M. Ripani , A. Rizzo , G. Rosner , P. Rossi , P. Roy , F. Sabatie , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , A. Simonyan , Iu. Skorodumina , D. Sokhan , N. Sparveris , I. I. Strakovsky , S. Strauch , V. Sytnik , Ye Tian , S. Tkachenko , M. Ungaro , E. Voutier , N. K. Walford , X. Wei , L. B. Weinstein , M. H. Wood , N. Zachariou , L. Zana , J. Zhang , Z. W. Zhao , I. Zonta

We measure the spin-lattice relaxation of donor bound electrons in ultrapure, isotopically enriched, phosphorus-doped $^{28}$Si:P. The optical pump-probe experiments reveal at low temperatures extremely long spin relaxation times which…

Mesoscale and Nanoscale Physics · Physics 2021-04-13 Eduard Sauter , Nikolay V. Abrosimov , Jens Hübner , Michael Oestreich

The magnetocaloric effect of polycrystalline samples of pure and Y-doped dipolar spin ice Dy2Ti2O7 was investigated at temperatures from nominally 0.3 K to 6 K and in magnetic fields of up to 2 T. As well as being of intrinsic interest, it…

Soft Condensed Matter · Physics 2015-06-25 M. Orendac , J. Hanko , E. Cizmar , A. Orendacova , M. Shirai , S. T. Bramwell

We inject spin-polarized electrons from an Fe/MgO tunnel barrier contact into n-type Ge(001) substrates with electron densities 2e16 < n < 8e17 cm-3, and electrically detect the resulting spin accumulation using three-terminal Hanle…

Materials Science · Physics 2012-02-20 A. T. Hanbicki , S. -. F. Cheng , R. Goswami , O. M. J. van `t Erve , B. T. Jonker

The Compton double-polarization observable $\Sigma_{2z}$ has been measured for the first time in the $\Delta(1232)$ resonance region using a circularly polarized photon beam incident on a longitudinally polarized target at the Mainz…

The shot noise of spin polarized electrons is shown to be generically dependent upon spin-flip processes. Such a situation represents perhaps the simplest instance where the two-particle character of current fluctuations out of equilibrium…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. Lamacraft

The JASMIN Collaboration has performed an experiment to conduct measurements of nuclear reaction rates around the anti-proton production (Pbar) target at the Fermi National Accelerator Laboratory (FNAL). At the Pbar target station, the…

Time-resolved optical techniques are used to explore electron spin dynamics in bulk and epilayer samples of n-type ZnO as a function of temperature and magnetic field. The bulk sample yields a spin coherence time T2* of 20 ns at T = 30 K.…

Materials Science · Physics 2007-05-23 S. Ghosh , V. Sih , W. H. Lau , D. D. Awschalom , S. -Y. Bae , S. Wang , S. Vaidya , G. Chapline

We report measurements of enhanced tensor polarization on solid-state targets. The results here represent an increase in tensor polarization over that previously achieved in high energy and nuclear scattering experiments that focused on the…

Instrumentation and Detectors · Physics 2020-08-24 Dustin Keller , Don Crabb , Donal Day

We report electron spin resonance measurements of donors in silicon at millikelvin temperatures using a superconducting $LC$ planar micro-resonator and a Josephson Parametric Amplifier. The resonator includes a nanowire inductor, defining a…

We report a large enhancement of 1.7 in deuteron polarization up to values of 0.6 due to frequency modulation of the polarizing microwaves in a two liters polarized target using the method of dynamic nuclear polarization. This target was…

High Energy Physics - Experiment · Physics 2012-08-27 The SMC Collaboration

The first measurements of the induced proton polarization, P_n, for the 12C (e,e'\vec{p}) reaction are reported. The experiment was performed at quasifree kinematics for energy and momentum transfer (\omega,q) \approx (294 MeV, 756 MeV/c)…