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We measured the magnetoresistance as a function of temperature down to 20mK and magnetic field for a set of underdoped PrCeCuO (x=0.12) thin films with controlled oxygen content. This allows us to access the edge of the superconducting dome…

Superconductivity · Physics 2015-05-19 S. Finkelman , M. Sachs , J. Paglione , G. Droulers , P. Bach , R. L. Greene , Y. Dagan

Growth of MgB2 thin films by pulsed laser deposition is examined under ex situ and in situ processing conditions. For the ex situ process, Boron films grown by PLD were annealed at 900 C with excess Mg. For the in situ process, different…

We measured the temperature dependence of the linear high field Hall resistivity of La_0.67Ca_0.33MnO_3 (T_C=232K) and La_0.67Sr_0.33MnO_3 (T_C=345K) thin films in the temperature range from 4K up to 360K in magnetic fields up to 20T. At…

Materials Science · Physics 2009-10-31 W. Westerburg , F. Martin , G. Jakob , P. J. M. van Bentum , J. A. A. J. Perenboom

Thin films of the correlated transition-metal oxide LaNiO$_3$ undergo a metal-insulator transition when their thickness is reduced to a few unit cells. Here, we use angle-resolved photoemission spectroscopy to study the evolution of the…

Strongly Correlated Electrons · Physics 2020-06-16 Edoardo Cappelli , Willem Tromp , Siobhan McKeown Walker , Anna Tamai , Marta Gibert , Felix Baumberger , Flavio Y. Bruno

We report on the optimisation of the growth conditions of manganite La0.7Sr0.3MnO3 (LSMO) thin films prepared by Channel Spark Ablation (CSA). CSA belongs to pulsed electron deposition methods and its energetic and deposition parameters are…

Ferroelectric BaTiO3 films with large polarization have been integrated with Si(001) by pulsed laser deposition. High quality c-oriented epitaxial films are obtained in a substrate temperature range of about 300 deg C wide. The deposition…

Materials Science · Physics 2018-01-25 Jike Lyu , Ignasi Fina , Raul Solanas , Josep Fontcuberta , Florencio Sanchez

Magnetotransport properties of p-InMnAs layers are studied in pulsed magnetic fields up to 30 T. Samples were prepared by the laser deposition and annealed by ruby laser pulses. Well annealed samples show p-type conductivity while they were…

La0.7Ce0.3MnO3 is a relatively new addition in the family of colossal magnetoresistive manganites where the cerium ion is believed to be in the Ce4+ state. In this paper we report an extensive study the magnetotransport properties of laser…

Materials Science · Physics 2007-05-23 P. Raychaudhuri , S. Mukherjee , A. K. Nigam , J. John , U. D. Vaisnav , R. Pinto

We report an investigation of Metal Insulator Transition (MIT) using conductivity and magnetoconductance (MC) measurements down to 0.3 K in Nd_{0.7}La_{0.3}NiO_{3} films grown on crystalline substrates of LaAlO_{3} (LAO), SrTiO_{3} (STO),…

Strongly Correlated Electrons · Physics 2020-07-27 Ravindra Singh Bisht , Gopi Nath Daptary , Aveek Bid , A. K. Raychaudhuri

We have investigated the magnetic field-induced metal-insulator transition in the tau-phase organic conductors, which occurs in fields above 35 T, and below 14 K, by magnetization, thermoelectric, and pressure dependent transport methods.…

Strongly Correlated Electrons · Physics 2009-11-10 D. Graf , E. S. Choi , J. S. Brooks , N. Harrison , K. Murata , T. Konoike , G. Papavassilou , G. A. Mousdis

The temperature dependence of ultrafast photoinduced reflectivity transients is reported in Nd$_{0.5}$Sr$_{0.5}$MnO$_{3}$ thin film. The photoinduced reflectivity shows a complex response with very different temperature dependences on…

Condensed Matter · Physics 2009-11-10 T. Mertelj , D. Mihailovic , Z. Jagličič , A. A. Bosak , O. Yu. Gorbenko , A. R. Kaul

We have fabricated high-quality FeSe1-x superconducting films with a bulk Tc of 11-12 K on different substrates, Al2O3(0001), SrTiO3(100), MgO(100), and LaAlO3(100), by using a pulsed laser deposition technique. All the films were grown at…

Superconductivity · Physics 2015-05-18 Soon-Gil Jung , Nam Hoon Lee , Eun-Mi Choi , Won Nam Kang , Sung-Ik Lee , Tae-Jong Hwang , Dong Ho Kim

MBE-grown, 5 nm-thick annealed Ga0.95Mn0.05As films with Tc~90K demonstrate transition from metallic to insulating state below To~10K, where sheet resistances Rsh~h/e2 and both longitudinal Rxx and transverse Rxy components become…

Materials Science · Physics 2008-06-17 R. R. Gareev , A. Petukhov , M. Schlapps , M. Doeppe , J. Sadowski , M. Sperl , W. Wegscheider

We examine the magnetic easy-axis directions of stoichiometric magnetite films grown on SrTiO3:Nb by infrared pulsed-laser deposition. Spin-polarized low-energy electron microscopy reveals that the individual magnetic domains are magnetized…

Transmittance of the colossal magnetoresistive compound Nd_0.5Sr_0.5MnO_3 showing metal-insulator phase transition has been studied by means of the submm- and mm-wavelength band spectroscopy. An unusually high transparency of the material…

Condensed Matter · Physics 2016-08-31 S. Zvyagin , A. Angerhofer , K. V. Kamenev , L. -C. Brunel , G. Balakrishnan , D. McK. Paul

FeSex (x = 0.80, 0.84, 0.88, 0.92) thin films were prepared on SrTiO3(001) (STO), (La,Sr)(Al,Ta)O3(001) (LSAT), and LaAlO3(001) (LAO) substrates by pulsed laser deposition method. All thin films show single-phase and c-axis oriented…

Superconductivity · Physics 2009-05-18 Y. Han , W. Y. Li , L. X. Cao , S. Zhang , B. Xu , B. R. Zhao

FeSe$_{1-x}$Te$_{x}$ thin films with PbO-type structure are successfully grown on MgO(100) and LaSrAlO$_{4}$(001) substrates from FeSe$_{1-x}$Te$_{x+d}$ polycrystalline targets by pulsed-laser deposition. The film deposited on the MgO…

Superconductivity · Physics 2009-08-11 Yoshinori Imai , Ryo Tanaka , Takanori Akiike , Masafumi Hanawa , Ichiro Tsukada , Atsutaka Maeda

Magnetic proximity effect of a topological insulator in contact with a ferromagnet is reported in thin film bilayers of 15 nm thick $BiSbTe_3$ on either 15 or 40 nm thick $SrRuO_3$ on (100) $SrTiO_3$ wafers. Magneto transport results of the…

Strongly Correlated Electrons · Physics 2018-02-14 Gad Koren

An external electric field induced reversible modulation of room temperature magnetic moment is achieved in an epitaxial and insulating thin film of dilutely cobalt-doped anatase TiO2. This first demonstration of electric field effect in…

Materials Science · Physics 2009-11-10 T. Zhao , S. R. Shinde , S. B. Ogale , H. Zheng , T. Venkatesan , R. Ramesh , S. Das Sarma

Obtaining high-quality thin films of 5d transition metal oxides is essential to explore the exotic semimetallic and topological phases predicted to arise from the combination of strong electron correlations and spin-orbit coupling. Here, we…

Strongly Correlated Electrons · Physics 2016-08-08 D. J. Groenendijk , N. Manca , G. Mattoni , L. Kootstra , S. Gariglio , Y. Huang , E. van Heumen , A. D. Caviglia