Now showing items 597-616 of 942

    • Quantum critical point in the Sc-doped itinerant antiferromagnet TiAu 

      Svanidze, E.; Besara, T.; Wang, J.K.; Geiger, D.; Prochaska, L.; Santiago, J.M.; Lynn, J.W.; Paschen, S.; Siegrist, T.; Morosan, E. (2017)
      We present an experimental realization of a quantum critical point in an itinerant antiferromagnet composed of nonmagnetic constituents, TiAu. By partially substituting Ti with Sc in Ti 1 − x Sc x Au , a doping ...
    • Quantum criticality in the pseudogap Bose-Fermi Anderson and Kondo models: Interplay between fermion- and boson-induced Kondo destruction 

      Pixley, J.H.; Kirchner, Stefan; Ingersent, Kevin; Si, Qimiao (2013)
      We address the phenomenon of critical Kondo destruction in pseudogap Bose-Fermi Anderson and Kondo quantum impurity models. These models describe a localized level coupled both to a fermionic bath having a density of states ...
    • Quantum effects and nonlocality in strongly coupled plasmonic nanowire dimers 

      Teperik, Tatiana V.; Nordlander, Peter; Aizpurua, Javier; Borisov, Andrei G. (2013)
      Using a fully quantum mechanical approach we study the optical response of a strongly coupled metallic nanowire dimer for variable separation widths of the junction between the nanowires. The translational invariance of ...
    • Quantum jumps via spontaneous Raman scattering 

      Hulet, Randall G.; Wineland, D.J. (1987)
      A single laser, which is used to induce and detect spontaneous Raman transitions, can be used to observe quantum jumps in a single atom. The population dynamics of a particular system, consisting of two S1/22 ground-state ...
    • Quantum mechanical effects in plasmonic structures with subnanometre gaps 

      Zhu, Wenqi; Esteban, Ruben; Borisov, Andrei G.; Baumberg, Jeremy J.; Nordlander, Peter; Lezec, Henri J.; Aizpurua, Javier; Crozier, Kenneth B. (2016)
      Metallic structures with nanogap features have proven highly effective as building blocks for plasmonic systems, as they can provide a wide tuning range of operating frequencies and large near-field enhancements. Recent ...
    • Quantum Phases of the Shastry-Sutherland Kondo Lattice: Implications for the Global Phase Diagram of Heavy-Fermion Metals 

      Pixley, J.H.; Yu, Rong; Si, Qimiao (2014)
      Considerable recent theoretical and experimental effort has been devoted to the study of quantum criticality and novel phases of antiferromagnetic heavy-fermion metals. In particular, quantum phase transitions have been ...
    • Quantum plasmonics: Symmetry-dependent plasmon-molecule coupling and quantized photoconductances 

      Song, Peng; Meng, Sheng; Nordlander, Peter; Gao, Shiwu (2012)
      We investigate photoinduced electron transport through nanoparticle dimers connected by linear and ringlike molecules. The two model junctions exhibit similar absorption but distinct photoconductance. The linear-chain junction ...
    • Quantum quench phase diagrams of an s-wave BCS-BEC condensate 

      Yuzbashyan, E.A.; Dzero, M.; Gurarie, V.; Foster, M.S. (2015)
      We study the dynamic response of an s-wave BCS-BEC (atomic-molecular) condensate to detuning quenches within the two-channel model beyond the weak-coupling BCS limit. At long times after the quench, the condensate ends up ...
    • Quasiparticle coupled cluster theory for pairing interactions 

      Henderson, Thomas M.; Scuseria, Gustavo E.; Dukelsky, Jorge; Signoracci, Angelo; Duguet, Thomas (2014)
      We present an extension of the pair coupled cluster doubles (p-CCD) method to quasiparticles and apply it to the attractive pairing Hamiltonian. Near the transition point where number symmetry gets spontaneously broken, ...
    • Quasispecies theory for evolution of modularity 

      Park, Jeong-Man; Niestemski, Liang Ren; Deem, Michael W. (2015)
      Biological systems are modular, and this modularity evolves over time and in different environments. A number of observations have been made of increased modularity in biological systems under increased environmental ...
    • Quench-Induced Floquet Topologicalᅠp-Wave Superfluids 

      Foster, Matthew S.; Gurarie, Victor; Dzero, Maxim; Yuzbashyan, Emil A. (2014)
      Ultracold atomic gases in two dimensions tuned close to a p-wave Feshbach resonance were expected to exhibit topological superfluidity, but these were found to be experimentally unstable. We show that one can induce a ...
    • Radiation testing of electronics for the CMS endcap muon system 

      Bylsma, B.; Cady, D.; Celik, A.; Durkin, L.S.; Gilmore, J.; Haley, J.; Khotilovich, V.; Lakdawala, S.; Liu, J.; Matveev, M.; Padley, B.P.; Roberts, J.; Roe, J.; Safonov, A.; Suarez, I.; Wood, D.; Zawisza, I. (2013)
      The electronics used in the data readout and triggering system for the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) particle accelerator at CERN are exposed to high radiation levels. This ...
    • Radiative Decay Rates in Hg+ from Observations of Quantum Jumps in a Single Ion 

      Itano, Wayne M.; Bergquist, J.C.; Hulet, Randall G.; Wineland, D.J. (1987)
      Radiative decay rates connecting the lowest four energy levels of Hg+198 have been derived solely from an analysis of the fluctuations (quantum jumps) of the laser-induced fluorescence of the 194-nm first resonance transition ...
    • Radiative lifetime of the 2P state of lithium 

      McAlexander, W.I.; Abraham, E.R.I.; Hulet, R.G. (1996)
      We determine the radial dipole moment between the 2S and 2P states of atomic lithium by analyzing the long-range vibrational eigenenergies of the singly excited diatomic molecule. The result can be expressed in terms of ...
    • Range-Separated Brueckner Coupled Cluster Doubles Theory 

      Shepherd, James J.; Henderson, Thomas M.; Scuseria, Gustavo E. (2014)
      We introduce a range-separation approximation to coupled cluster doubles (CCD) theory that successfully overcomes limitations of regular CCD when applied to the uniform electron gas. We combine the short-range ladder channel ...
    • Rapidity distributions in exclusive Z+jet and γ+jet events in pp collisions at √s=7  TeV 

      Adair, A.; Akgun, B.; Ecklund, K.M.; Geurts, F.J.M.; Li, W.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2013)
      Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7  TeV, ...
    • Ratios of dijet production cross sections as a function of the absolute difference in rapidity between jets in proton–proton collisions at √s=7 TeV 

      CMS Collaboration; Adair, A.; Boulahouache, C.; Cuplov, V.; Ecklund, K.M.; Geurts, F.J.M.; Padley, B.P.; Redjimi, R.; Roberts, J.; Zabel, J. (2012)
      A study of dijet production in proton–proton collisions was performed at √s=7~TeV for jets with p T>35 GeV and |y|<4.7 using data collected with the CMS detector at the LHC in 2010. Events with at least one pair of jets ...
    • RCM-E and AMIE studies of the Harang reversal formation during a steady magnetospheric convection event 

      Yang, Jian; Toffoletto, Frank; Lu, Gang; Wiltberger, Michael (2014)
      This paper presents the results of a modeling study on the formation of the Harang reversal (HR) during a steady magnetospheric convection event. The Harang reversal is identified as the boundary of the northward and ...
    • RCM-E simulation of a thin arc preceded by a north-south-aligned auroral streamer 

      Yang, Jian; Toffoletto, Frank R.; Wolf, Richard A. (2014)
      The Time History of Events and Macroscale Interactions during Substorms (THEMIS) all-sky imager data have recently revealed a repeatable sequence that occurs during many auroral substorms, in which a newly formed thin arc ...
    • RCM-E simulation of bimodal transport in the plasma sheet 

      Yang, Jian; Wolf, Richard A.; Toffoletto, Frank R.; Sazykin, Stanislav; Wang, Chih-Ping (2014)
      Plasma sheet transport is bimodal, consisting of both large-scale adiabatic convection and intermittent bursty flows in both earthward and tailward directions. We present two comparison simulations with the Rice Convection ...