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We describe a new sensitive method for the investigation of weakly magnetic films placed inside a tri-layer planar waveguide. Polarized neutrons tunnel into the waveguide through the surface, channel along the layers and are emitted from…

材料科学 · 物理学 2019-03-27 S. V. Kozhevnikov , V. D. Zhaketov , T. Keller , Yu. N. Khaydukov , F. Ott , F. Radu

We report measurements of a new type of magnetoresistance in Pt and Ta thin films. The spin accumulation created at the surfaces of the film by the spin Hall effect decreases in a magnetic field because of the Hanle effect, resulting in an…

Magnetoresistance measurements on the magnetic semiconductor (In,Mn)Sb suggest that magnetic scattering in this material is dominated by isolated Mn$^{2+}$ ions located outside the ferromagnetically-ordered regions when the system is below…

其他凝聚态物理 · 物理学 2009-11-11 M. Csontos , T. Wojtowicz , X. Liu , M. Dobrowolska B. Jankó , J. K. Furdyna , G. Mihály

The magnetic properties of a monolayer of Fe4 single molecule magnets grafted onto a Au (111) thin film have been investigated using low energy muon spin rotation. The properties of the monolayer are compared to bulk Fe4. We find that the…

介观与纳米尺度物理 · 物理学 2009-09-28 Z. Salman , S. J. Blundell , S. R. Giblin , M. Mannini , L. Margheriti , E. Morenzoni , T. Prokscha , A. Suter , A. Cornia , R. Sessoli

The influence of strong internal forces on photon-assisted scattering and on the displacement mechanism of magnetoconductivity oscillations in a two-dimensional (2D) electron gas is theoretically studied. The theory is applied to the highly…

介观与纳米尺度物理 · 物理学 2015-05-25 Yuriy P. Monarkha

Altermagnets with pronounced spin-splitting band structure, unconventional magnetic and crystal symmetries, and exotic magneto-transport properties have received immense interest in cutting-edge spintronics, materials science, and condensed…

A high resolution inelastic neutron scattering (INS) study of fully deuterated Mn$_{12}$-acetate provides the most accurate spin Hamiltonian parameters for this prototype single molecule magnet so far. The Mn$_{12}$-clusters deviate from…

强关联电子 · 物理学 2009-11-10 Roland Bircher , Gregory Chaboussant , Andreas Sieber , Hans U. Guedel , Hannu Mutka

The problem of a thin superconducting film in a parallel magnetic field, first discussed in the classical paper by Ginzburg and Landau for temperatures close to the critical, is revisited with the help of the microscopic BCS theory for…

超导电性 · 物理学 2024-06-03 V. G. Kogan , R. Prozorov

We investigate the effects of W incorporation into Cu-Zr thin film metallic glasses using molecular dynamics (MD) simulations combined with magnetron sputtering. All studies are carried out in the whole range of W concentrations (0 to 100…

材料科学 · 物理学 2025-11-12 Hassan Ataalite , Jiri Houska , Deepika Thakur , Michaela Cervena , Petr Zeman

Resistivity measurements are reported for single crystals of Mn$_{12}$-Acetate and Fe$_8$Br$_8$. Both materials exhibit a semiconductor-like, thermally activated behavior over the 200-300 K range. The activation energy, $E_a$, obtained for…

凝聚态物理 · 物理学 2009-11-10 J. M. North , D. Zipse , N. S. Dalal , E. S. Choi , E. Jobiliong , J. S. Brooks , D. L. Eaton

We performed high resolution diffraction and inelastic neutron scattering measurements of Mn_{12}-acetate. Using a very high energy resolution, we could separate the energy levels corresponding to the splitting of the lowest S multiplet.…

介观与纳米尺度物理 · 物理学 2009-10-31 I. Mirebeau , M. Hennion , H. Casalta , H. Andres , H. U. Güdel , A. V. Irodova , A. Caneschi

We report measurements and theoretical analysis of resonant spin tunneling in randomly oriented nanospheres of a molecular magnet. Amorphous nanospheres of Mn$_{12}$ acetate have been fabricated and characterized by chemical, infrared, TEM,…

介观与纳米尺度物理 · 物理学 2015-07-30 S. Lendinez , R. Zarzuela , J. Tejada , M. W. Terban , S. J. L. Billinge , J. Espin , I. Imaz , D. Maspoch , E. M. Chudnovsky

Giant magnetization of polyalanine monolayers on gold observed in resent years along with unusual large spin selectivity, the potential of the film and its temperature dependence are all explained in the context of vacuum polarization at…

材料科学 · 物理学 2014-03-07 Itai Carmeli

In recent years diamond magnetometers based on the nitrogen-vacancy (NV) center have been of considerable interest for magnetometry applications at the nanoscale. An interesting application which is well suited for NV centers is the study…

超导电性 · 物理学 2014-02-26 A. Waxman , H. Schlussel , D. Groswasser , V. M. Acosta , L. -S. Bouchard , D. Budker , R. Folman

We investigated structural, magnetic and electrical properties of sputter deposited Mn-Fe-Ga compounds. The crystallinity of the Mn-Fe-Ga thin films was confirmed using x-ray diffraction. X-ray reflection and atomic force microscopy…

The glassy response of thin films of La0.8Ca0.2MnO3 to external magnetic and gated electrostatic fields in a field-effect geometry has been studied at low temperatures. A hierarchical response with irreversible memory effects, non-ergodic…

强关联电子 · 物理学 2013-05-29 A. Bhattacharya , M. Eblen-Zayas , N. E. Staley , A. L. Kobrinskii , A. M. Goldman

We present a quantitative comparison of the magnetization measured by spin-polarized neutron reflectivity (SPNR) and DC magnetometry on a 1370 \AA\ -thick Nb superconducting film. As a function of magnetic field applied in the film plane,…

超导电性 · 物理学 2007-05-23 S. -W. Han , J. Farmer , H. Kaiser , P. F. Miceli , I. V. Roshchin , L. H. Greene

This work presents a magnetic field imaging method based on color centers in diamond crystal applied to a thin film of a nanolaminated Mn$_2$GaC MAX phase. Magnetic properties of the surface related structures have been described around the…

应用物理 · 物理学 2020-11-13 Andris Berzins , Janis Smits , Andrejs Petruhins , Hugo Grube

We suggest to use a polarized electron target for improving the sensitivity of the search for the neutrino magnetic moment to the level $\sim 3\cdot10^{-13}\mu_B$ in the processes of neutrino (antineutrino) -- electron scattering. It is…

高能物理 - 唯象学 · 物理学 2009-10-31 T. I. Rashba , V. B. Semikoz

The oldest known magnetic material, magnetite, is of current interest for use in spintronics as a thin film. An open question is how thin can magnetite films be and still retain the robust ferrimagnetism required for many applications. We…