Now showing items 456-475 of 1345

    • Landau level crossing in a spin-orbit coupled two-dimensional electron gas 

      Wu, Xing-Jun; Li, Ting-Xin; Zhang, Chi; Du, Rui-Rui (2015)
      We have studied experimentally theᅠLandau levelᅠ(LL) spectrum of a two-dimensionalᅠelectron gasᅠ(2DEG)ᅠin an In0.53Ga0.47As/InPᅠquantum wellᅠstructure by means of low-temperature magneto-transport coincidence measurement ...
    • Large-amplitude electric fields in the inner magnetosphere: Van Allen Probes observations of subauroral polarization streams 

      Califf, S.; Li, X.; Wolf, R.A.; Zhao, H.; Jaynes, A.N.; Wilder, F.D.; Malaspina, D.M.; Redmon, R. (2016)
      The subauroral polarization stream (SAPS) is an important magnetosphere-ionosphere (MI) coupling phenomenon that impacts a range of particle populations in the inner magnetosphere. SAPS studies often emphasize ionospheric ...
    • Large-scale current systems and ground magnetic disturbance during deep substorm injections 

      Yang, J.; Toffoletto, F.R.; Wolf, R.A.; Sazykin, S.; Ontiveros, P.A.; Weygand, J.M. (2012)
      We present a detailed analysis of the large-scale current systems and their effects on the ground magnetic field disturbance for an idealized substorm event simulated with the equilibrium version of the Rice Convection ...
    • Laser Pulse Duration Is Critical For the Generation of Plasmonic Nanobubbles 

      Lukianova-Hleb, Ekaterina Y.; Volkov, Alexey N.; Lapotko, Dmitri O. (2014)
      Plasmonic nanobubbles (PNBs) are transient vapor nanobubbles generated in liquid around laser-overheated plasmonic nanoparticles. Unlike plasmonic nanoparticles, PNBs’ properties are still largely unknown due to their ...
    • Laser-cooling limits and single-ion spectroscopy 

      Wineland, D.J.; Itano, Wayne M.; Bergquist, J.C.; Hulet, Randall G. (1987)
      The limitations to the achievement of low kinetic energies for laser cooling of single ions confined in electromagnetic traps are discussed. Sideband cooling of an ion in an rf (Paul) trap is reexamined including the effects ...
    • Laser-free slow atom source 

      Ghaffari, B.; Gerton, J.M.; McAlexander, W.I.; Strecker, K.E.; Homan, D.M.; Hulet, R.G. (1999)
      A slow atom source, which does not rely on lasers, has been developed and characterized. The device, acting as an atomic low-pass velocity filter, utilizes permanent magnets to passively select the slow atoms present in a ...
    • Learning physics of living systems from Dictyostelium 

      Levine, Herbert (2014)
      Unlike a new generation of scientists that are being trained directly to work on the physics of living systems, most of us more senior members of the community had to find our way from other research areas. We all have our ...
    • Lie algebraic similarity transformed Hamiltonians for lattice model systems 

      Wahlen-Strothman, Jacob M.; Jiménez-Hoyos, Carlos A.; Henderson, Thomas M.; Scuseria, Gustavo E. (2015)
      We present a class of Lie algebraic similarity transformations generated by exponentials of two-body on-site Hermitian operators whose Hausdorff series can be summed exactly without truncation. The correlators are defined ...
    • Lifetimes of ultra-long-range strontium Rydberg molecules 

      Camargo, F.; Whalen, J.D.; Ding, R.; Sadeghpour, H.R.; Yoshida, S.; Burgdörfer, J.; Dunning, F.B.; Killian, T.C. (2016)
      The lifetimes of the lower-lying vibrational states of ultra-long-range strontium Rydberg molecules comprising one ground-state 5s2 1S0 atom and one Rydberg atom in the 5s38s3S1 state are reported. The molecules are created ...
    • Lifetimes of ultralong-range Strontium Rydberg molecules in a dense BEC 

      Camargo, F.; Whalen, J.D.; Ding, R.; Killian, T.C.; Dunning, F.B.; Pérez-Ríos, J.; Yoshida, S.; Burgdörfer, J. (2017)
      The lifetimes and decay channels of ultralong-range strontium Rydberg molecules that contain tens to hundreds of ground-state atoms within the electron orbit are examined by monitoring the time evolution of the Rydberg ...
    • Lifetimes of ultralong-range strontium Rydberg molecules in a dense Bose-Einstein condensate 

      Whalen, J.D.; Camargo, F.; Ding, R.; Killian, T.C.; Dunning, F.B.; Pérez-Ríos, J.; Yoshida, S.; Burgdörfer, J. (2017)
      The lifetimes and decay channels of ultralong-range Rydberg molecules created in a dense Bose-Einstein condensate are examined by monitoring the time evolution of the Rydberg population using field ionization. Studies of ...
    • Lifetimes of ultralong-range strontium Rydberg molecules in cold dense gases 

      Whalen, J.D.; Camargo, F.; Ding, R.; Killian, T.C.; Dunning, F.B.; Pérez-Ríos, J.; Yoshida, S.; Burgdörfer, J. (2017)
      The lifetimes and decay channels of ultralong-range Rydberg molecules created in a dense Bose-Einstein condensate (BEC) are examined by monitoring the time evolution of the Rydberg population using field ionization. The ...
    • Ligand-Dependent Colloidal Stability Controls the Growth of Aluminum Nanocrystals 

      Clark, Benjamin D.; DeSantis, Christopher J.; Wu, Gang; Renard, David; McClain, Michael J.; Bursi, Luca; Tsai, Ah-Lim; Nordlander, Peter; Halas, Naomi J. (2019)
      The precise size- and shape-controlled synthesis of monodisperse Al nanocrystals remains an open challenge, limiting their utility for numerous applications that would take advantage of their size and shape-dependent optical ...
    • Limits on the Higgs boson lifetime and width from its decay to four charged leptons 

      CMS Collaboration; Adair, A.; Akgun, B.; Chen, Z.; Ecklund, K.M.; Geurts, F.J.M.; Guilbaud, M.; Li, W.; Michlin, B.; Northup, M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Rorie, J.; Tu, Z.; Zabel, J. (2015)
      Constraints on the lifetime and width of the Higgs boson are obtained from H→ZZ→4ℓ events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7 fb−1 at a center-of-mass ...
    • Linearized Jastrow-style fluctuations on spin-projected Hartree-Fock 

      Henderson, Thomas M.; Scuseria, Gustavo E. (2013)
      The accurate and efficient description of strong electronic correlations remains an important objective in electronic structure theory. Projected Hartree-Fock theory, where symmetries of the Hamiltonian are deliberately ...
    • Local breaking of fourfold rotational symmetry by short-range magnetic order in heavily overdoped Ba(Fe1−xCux)2As2 

      Wang, Weiyi; Song, Yu; Hu, Ding; Li, Yu; Zhang, Rui; Harriger, L.W.; Tian, Wei; Cao, Huibo; Dai, Pengcheng (2017)
      We investigate Cu-doped Ba(Fe1−xCux)2As2 with transport, magnetic susceptibility, and elastic neutron scattering measurements. In the heavily Cu-doped regime where long-range stripe-type antiferromagnetic order in BaFe2As2 ...
    • Local orthorhombic lattice distortions in the paramagnetic tetragonal phase of superconducting NaFe1−xNixAs 

      Wang, Weiyi; Song, Yu; Cao, Chongde; Tseng, Kuo-Feng; Keller, Thomas; Li, Yu; Harriger, L.W.; Tian, Wei; Chi, Songxue; Yu, Rong; Nevidomskyy, Andriy H.; Dai, Pengcheng (2018)
      Understanding the interplay between nematicity, magnetism and superconductivity is pivotal for elucidating the physics of iron-based superconductors. Here we use neutron scattering to probe magnetic and nematic orders ...
    • Local Orthorhombicity in the Magnetic ${C}_{4}$ Phase of the Hole-Doped Iron-Arsenide Superconductor ${\mathrm{Sr}}_{1\ensuremath{-}x}{\mathrm{Na}}_{x}{\mathrm{Fe}}_{2}{\mathrm{As}}_{2}$ 

      Frandsen, Benjamin A.; Taddei, Keith M.; Yi, Ming; Frano, Alex; Guguchia, Zurab; Yu, Rong; Si, Qimiao; Bugaris, Daniel E.; Stadel, Ryan; Osborn, Raymond; Rosenkranz, Stephan; Chmaissem, Omar; Birgeneau, Robert J. (2017)
      We report on temperature-dependent pair distribution function measurements of Sr1−xNaxFe2As2, an iron-based superconductor system that contains a magnetic phase with reentrant tetragonal symmetry, known as the magnetic C4 ...
    • Long-range pseudorapidity dihadron correlations in d+Au collisions at sNN=200 GeV 

      STAR Collaboration; Butterworth, J.; Eppley, G.; Geurts, F.; Roberts, J.B.; Xin, K.; Yepes, P. (2015)
      Dihadron angular correlations in d+Au collisions at sNN=200 GeV are reported as a function of the measured zero-degree calorimeter neutral energy and the forward charged hadron multiplicity in the Au-beam direction. A ...
    • Long-range two-dimensional superstructure in the superconducting electron-doped cuprate Pr0.88LaCe0.12CuO4 

      Campbell, B.J.; Rosenkranz, S.; Kang, H.J.; Stokes, H.T.; Chupas, P.J.; Komiya, S.; Ando, Y.; Li, Shiliang; Dai, Pengcheng (2015)
      Utilizing single-crystal synchrotron x-ray scattering, we observe distorted CuO2 planes in the electron-doped superconductor Pr1−xLaCexCuO4+δ, x = 0.12. Resolution-limited rods of scattering are indicative of a long-range ...