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Related papers: Puzzling magneto-optical properties of ZnMnO films

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We have used resonant photoemission with circular polarized light as a new tool to obtain information about the electronic structure of half-metals. After careful sample surface preparation of La0.7Sr0.3MnO3, we have obtained a dichroic…

Materials Science · Physics 2018-06-06 M. C. Richter , O. Heckmann , B. S. Mun , C. S. Fadley , B. Mercey , K. Hricovini

In this work, nonlinear optical properties of Na: ZnO thin films (Na: ZnO) have been experimentally elaborated. The principal possibility to operate the nonlinear optical features using external laser beams is shown. The Na: ZnO films were…

Effects of spin-orbit coupling and s-d exchange interaction are probed by magnetoresistance measurements carried out down to 50 mK on ZnO and Zn_{1-x}Mn_{x}O with x = 3 and 7%. The films were obtained by laser ablation and doped with Al to…

Disordered Systems and Neural Networks · Physics 2009-11-11 T. Andrearczyk , J. Jaroszynski , G. Grabecki , T. Dietl , T. Fukumura , M. Kawasaki

Manganite thin films are promising candidates for studying the strongly correlated electron systems. Understanding the growth-and morphology-driven changes in the physical properties of manganite thin films is vital for their applications…

We have studied the magneto-optical and magnetotrasnport properties of GaMnAs thin films with high Mn concentrations (x= 12.2 - 21.3%) grown by molecular-beam epitaxy. These heavily Mn-doped GaMnAs films were formed by decreasing the growth…

Materials Science · Physics 2015-06-25 Shinobu Ohya , Kenichi Ohno , Masaaki Tanaka

The evolution of charge carriers in photoexcited room temperature ZnO nanoparticles in solution is investigated using ultrafast ultraviolet photoluminescence spectroscopy, ultrafast Zn K-edge absorption spectroscopy and ab-initio molecular…

We investigated the magnetic structure of an orthorhombic YMnO3 thin film by resonant soft x-ray and hard x-ray diffraction. We observed a temperature-dependent incommensurate magnetic reflection below 45 K and a commensurate…

Strongly Correlated Electrons · Physics 2012-02-07 H. Wadati , J. Okamoto , M. Garganourakis , V. Scagnoli , U. Staub , Y. Yamasaki , H. Nakao , Y. Murakami , M. Mochizuki , M. Nakamura , M. Kawasaki , Y. Tokura

Magneto optic measurements are a very powerful tool for investigating the polarization of a conduction band as a function of temperature and are used here to study the polarization of the mobile electrons in 50nm LSMO (x=0.3) strained thin…

Strongly Correlated Electrons · Physics 2009-11-13 T. K. Nath , J. R. Neal , G. A. Gehring

Thin films of the charge-ordered (CO) compound Pr$_{0.5}$Ca$_{0.5}$MnO$_{3}$ have been deposited onto (100)-oriented SrTiO$_{3}$ substrates using the Pulsed Laser Deposition technique. Magnetization and transport properties are measured…

Materials Science · Physics 2009-10-31 W. Prellier , Ch. Simon , A. M. Haghiri-Gosnet , B. Mercey , B. Raveau

The structure-property relation of nanostructured Al-doped ZnO thin films has been investigated in detail through a systematic variation of structure and morphology, with particular emphasis on how they affect optical and electrical…

Materials Science · Physics 2013-11-28 P. Gondoni , M. Ghidelli , F. Di Fonzo , M. Carminati , V. Russo , A. Li Bassi , C. S. Casari

We report the low temperature growth of vertically aligned ZnO nanocolumns on Si substrates by using reactive radio frequency magnetron sputtering.High sputtering pressure combined with low substrate temperatures induce a pronounced self…

Magneto-optic studies of ZnO doped with transition metals Co, Mn, V and Ti indicate a significant magnetic circular dichroism (MCD) at the ZnO band edge at room temperature, together with an associated dispersive Faraday rotation. Similar…

Strongly Correlated Electrons · Physics 2009-11-11 JR Neal , AJ Behan , RM Ibrahim , H J Blythe , M Ziese , AM Fox , GA Gehring

Cr-doped ZnO films were fabricated by a new but feasible method, that is, annealing Cr-Zn layers deposited via DC magnetron sputtering in air. Microstructures of the films were investigated using X-ray diffraction, scanning electron…

Materials Science · Physics 2025-08-19 Men Guo , Gilad Orr , Paul Ben Ishai , Xia Zhao , Shlomo Glasser

Strong spin-lattice coupling and prominent frustration effects observed in the 50$\%$ Fe-doped frustrated hexagonal ($h$)LuMnO$_3$ are reported. A N\'{e}el transition at $T_{\mathrm N} \approx$ 112~K and a possible spin re-orientation…

Strongly Correlated Electrons · Physics 2015-12-24 Harikrishnan S. Nair , Zhendong Fu , C. M. N. Kumar , V. Y. Pomjakushin , Yinguo Xiao , Tapan Chatterji , André M. Strydom

This work reports a pulsed laser-assisted synthesis, detailed structural characterization, and study of plasmonic properties of three sets of TiN/TiNO thin films with high electron density. The first two sets of TiN films were grown at 600C…

Epitaxial, n-type ZnO films grown by a laser molecular-beam epitaxy method were investigated by the temperature-dependent Hall-effect technique. The 300-K carrier concentration and mobility were about $n_s \sim 10^{16}$ cm$^{-3}$ and 440…

Materials Science · Physics 2009-11-11 T. Makino , Y. Segawa , A. Tsukazaki , A. Ohtomo , M. Kawasaki

As grown ZnO:Si nanocomposite films fabricated by thermal evaporation showed broad photoluiminescence (PL) spectra due to merging of four prominent peaks viz 370, 410, 470 and 520 nm. Investigations revealed the role of interface in…

Materials Science · Physics 2015-05-28 Shabnam , Chhaya Ravi Kant , P. Arun

The optical conductivity of the undoped PrMnO$_3$ manganite has been investigated in details at various temperatures between 300 and 4 K. Its low energy spectrum exhibits an optical gap, and is characterized by a single broad peak centered…

Strongly Correlated Electrons · Physics 2007-05-23 R. Sopracase , G. Gruener , C. Autret-Lambert , V. Ta Phuoc , V. Brize , J. C. Soret

We report the investigation of magnetostrictive property of polycrystalline ZnO film at room temperature on rotating a magnetic field in the plane of the film from 0 deg to 90 deg by an indigenously developed optical cantilever beam…

Materials Science · Physics 2026-03-31 Suman Guchhait , Saumen Chaudhuri , A. K. Das

In order to achieve polariton lasing at room temperature, a new fabrication methodology for planar microcavities is proposed: a ZnO-based microcavity in which the active region is epitaxially grown on an AlGaN/AlN/Si substrate and in which…