Now showing items 449-468 of 1345

    • K2ᅠReveals Pulsed Accretion Driven by the 2 Myr Old Hot Jupiter CI Tau b 

      Biddle, Lauren I.; Johns-Krull, Christopher M.; Llama, Joe; Prato, Lisa; Skiff, Brian A. (2018)
      CIᅠTau is a young (~2 Myr) classical T Tauri star located in the Taurus star-forming region. Radial velocity observations indicate it hosts a Jupiter-sized planet with an orbital period of approximately 9 days. In this ...
    • Kinetic energy oscillations in annular regions of ultracold neutral plasmas 

      Laha, S.; Chen, Y.C.; Gupta, P.; Simien, C.E.; Martinez, Y.N.; Mickelson, P.G.; Nagel, S.B.; Killian, T.C. (2006)
    • Kondo Destruction and Quantum Criticality in Kondo Lattice Systems 

      Si, Qimiao; Pixley, Jedediah H.; Nica, Emilian; Yamamoto, Seiji J.; Goswami, Pallab; Yu, Rong; Kirchner, Stefan (2014)
      Considerable efforts have been made in recent years to theoretically understand quantum phase transitions in Kondo lattice systems. A particular focus is on Kondo destruction, which leads to quantum criticality that goes ...
    • Kondo Destruction and Valence Fluctuations in an Anderson Model 

      Pixley, J.H.; Kirchner, Stefan; Ingersent, Kevin; Si, Qimiao (2012)
      Unconventional quantum criticality in heavy-fermion systems has been extensively analyzed in terms of a critical destruction of the Kondo effect. Motivated by a recent demonstration of quantum criticality in a mixed-valent ...
    • Kondo destruction in a quantum paramagnet with magnetic frustration 

      Zhang, Jiahao; Zhao, Hengcan; Lv, Meng; Hu, Sile; Isikawa, Yosikazu; Yang, Yi-feng; Si, Qimiao; Steglich, Frank; Sun, Peijie (2018)
      We report results of isothermal magnetotransport and susceptibility measurements at elevated magnetic fields B down to very low temperatures T on single crystals of the frustrated Kondo-lattice system CePdAl. They reveal ...
    • Kondo hybridization and quantum criticality in β−YbAlB4 by laser ARPES 

      Bareille, Cédric; Suzuki, Shintaro; Nakayama, Mitsuhiro; Kuroda, Kenta; Nevidomskyy, Andriy H.; Matsumoto, Yosuke; Nakatsuji, Satoru; Kondo, Takeshi; Shin, Shik (2018)
      We report an angle-resolved photoemission (ARPES) study of β−YbAlB4, which is known to harbor unconventional quantum criticality (QC) without any tuning. We directly observe a quasiparticle peak (QP) emerging from ...
    • Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling 

      Dzsaber, S.; Prochaska, L.; Sidorenko, A.; Eguchi, G.; Svagera, R.; Waas, M.; Prokofiev, A.; Si, Q.; Paschen, S. (2017)
      Recent theoretical studies of topologically nontrivial electronic states in Kondo insulators have pointed to the importance of spin-orbit coupling (SOC) for stabilizing these states. However, systematic experimental studies ...
    • 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 ...