Now showing items 8233-8252 of 24975

    • Femtosecond-laser hyperdoping and texturing of silicon for photovoltaic applications 

      Lin, Yu-Ting (2014-06-06)
      This dissertation explores strategies for improving photolvoltaic efficiency and reducing cost using femtosecond-laser processing methods including surface texturing and hyperdoping. Our investigations focus on two aspects: ...
    • The Fenian Narrative Corpus, c.600–c.2000: A Reassessment 

      Sumner, Natasha D. E. (2015-05-11)
      This dissertation traces the historical development of the Fenian narrative tradition—i.e. the vast body of story and song, some of it well over a millennium old, about the Gaelic hero, Fionn Mac Cumhaill and his roving ...
    • Fermi Gas Microscope 

      Setiawan, Widagdo (2012-08-03)
      Recent advances in using microscopes in ultracold atom experiment have allowed experimenters for the first time to directly observe and manipulate individual atoms in individual lattice sites. This technique enhances our ...
    • The Fermi Haze: A Gamma-Ray Counterpart to the Microwave Haze 

      Dobler, Gregory; Finkbeiner, Douglas; Cholis, Ilias; Slatyer, Tracy; Weiner, Neal (IOP Publishing, 2010)
      The Fermi Gamma-ray Space Telescope reveals a diffuse inverse Compton (IC) signal in the inner Galaxy with a similar spatial morphology to the microwave haze observed by WMAP, supporting the synchrotron interpretation of ...
    • Fermi polaron-polaritons in charge-tunable atomically thin semiconductors 

      Sidler, Meinrad; Back, Patrick; Cotlet, Ovidiu; Srivastavay, Ajit; Fink, Thomas; Kroner, Martin; Demler, Eugene A.; Imamoglu, Atac (Springer Nature, 2016)
      The dynamics of a mobile quantum impurity in a degenerate Fermi system is a fundamental problem in many-body physics. The interest in this field has been renewed due to recent ground-breaking experiments with ultracold ...
    • Fermi polarons in two dimensions 

      Schmidt, Richard; Enss, Tilman; Pietilä, Ville; Demler, Eugene (American Physical Society, 2012)
      We theoretically analyze inverse radio-frequency (rf) spectroscopy experiments in two-component Fermi gases. We consider a small number of impurity atoms interacting strongly with a bath of majority atoms. In two-dimensional ...
    • Fermi Surface and Pseudogap Evolution in a Cuprate Superconductor 

      He, Yang; Yin, Yi; Zech, M.; Soumyanarayanan, Anjan; Yee, Michael Manchun; Williams, T; Boyer, M. C.; Chatterjee, K.; Wise, W. D.; Zeljkovic, I; Kondo, T.; Takeuchi, T.; Ikuta, H.; Mistark, P.; Markiewicz, R. S.; Bansil, A.; Sachdev, Subir; Hudson, E. W.; Hoffman, Jennifer Eve (American Association for the Advancement of Science (AAAS), 2014)
      The unclear relationship between cuprate superconductivity and the pseudogap state remains an impediment to understanding the high transition temperature (Tc) superconducting mechanism. Here, we used magnetic field–dependent ...
    • Fermi Surface Reconstruction and Drop in the Hall Number due to Spiral Antiferromagnetism in High- T c Cuprates 

      Eberlein, Andreas; Metzner, Walter; Sachdev, Subir; Yamase, Hiroyuki (American Physical Society, 2016)
    • Fermi Surface Reconstruction in Hole-Doped t-J Models without Long-Range Antiferromagnetic Order 

      Punk, Matthias; Sachdev, Subir (American Physical Society, 2012)
      We calculate the Fermi surface of electrons in hole-doped, extended t-J models on a square lattice in a regime where no long-range antiferromagnetic order is present, and no symmetries are broken. Using the “spinon-dopon” ...
    • Fermi Surfaces and Gauge-Gravity Duality 

      Huijse, Liza; Sachdev, Subir (American Physical Society, 2011)
      We give a unified overview of the zero temperature phases of compressible quantum matter: i.e. phases in which the expectation value of a globally conserved \(U(1)\) density, \(Q\), varies smoothly as a function of parameters. ...
    • Fermi surfaces and Luttinger’s theorem in paired fermion systems 

      Sachdev, Subir; Yang, Kun (American Physical Society, 2006)
      We discuss ground state properties of a mixture of two fermion species which can bind to form a molecular boson. When the densities of the fermions are unbalanced, one or more Fermi surfaces can appear: we describe the ...
    • Fermion and spin counting in strongly correlated systems 

      Braungardt, Sibylle; Sen(De), Aditi; Sen, Ujjwal; Glauber, Roy J.; Lewenstein, Maciej (American Physical Society (APS), 2008)
      We apply the atom counting theory to strongly correlated Fermi systems and spin models, which can be realized with ultracold atoms. The counting distributions are typically sub-Poissonian and remain smooth at quantum phase ...
    • Fermion- and Spin-Counting in Strongly Correlated Systems 

      Braungardt, Sibylle; De, Aditi; Sen, Ujjwal; Glauber, Roy J.; Lewenstein, Maciej (American Physical Society, 2008)
      We apply the atom counting theory to strongly correlated Fermi systems and spin models, which can be realized with ultracold atoms. The counting distributions are typically sub-Poissonian and remain smooth at quantum phase ...
    • Fermionic Hamiltonians without trivial low-energy states 

      Herasymenko, Yaroslav; Anshu, Anurag; Terhal, Barbara; Helsen, Jonas (2023-07-25)
      We construct local fermionic Hamiltonians with no low-energy trivial states (NLTS), providing a fermionic counterpart to the NLTS theorem. Distinctly from the qubit case, we define trivial states via finite-depth fermionic ...
    • Ferristatin II Promotes Degradation of Transferrin Receptor-1 In Vitro and In Vivo 

      Byrne, Shaina L.; Buckett, Peter D.; Kim, Jonghan; Luo, Flora; Sanford, Jack; Chen, Juxing; Enns, Caroline; Wessling-Resnick, Marianne (Public Library of Science, 2013)
      Previous studies have shown that the small molecule iron transport inhibitor ferristatin (NSC30611) acts by down-regulating transferrin receptor-1 (TfR1) via receptor degradation. In this investigation, we show that another ...
    • Ferromagnetic Ga1-xMnx as Films Produced by Ion Implantation and Pulsed Laser Melting 

      Scarpulla, Michael A.; Dubon, Oscar D.; Yu, Kin Man; Monteiro, Orthon; Pillai, Manoj R.; Aziz, Michael; Ridgway, Mark C. (American Institute of Physics, 2003)
      We demonstrate the formation of ferromagnetic Ga<sub>1-x</sub>Mn<sub>x</sub>As films by Mn ion implantation into GaAs followed by pulsed-laser melting. Irradiation with a single excimer laser pulse results in the epitaxial ...
    • Ferruginous Conditions Dominated Later Neoproterozoic Deep-water Chemistry 

      Canfield, Donald E.; Poulton, Simon W.; Knoll, Andrew; Narbonne, Guy M.; Ross, Gerry; Goldberg, Tatiana; Strauss, Harald (American Association for the Advancement of Science, 2008)
      Earth's surface chemical environment has evolved from an early anoxic condition to the oxic state we have today. Transitional between an earlier Proterozoic world with widespread deep- water anoxia and a Phanerozoic world ...
    • Fertility and the Plough 

      Alesina, Alberto Francesco; Giuliano, Paola; Nunn, Nathan (American Economic Association, 2011)
      This paper provides evidence that the form of agriculture traditionally practiced—intensive plough agriculture versus shifting hoe agriculture—affected historic norms and preferences about fertility, and that these norms ...
    • Fervent Faith. Devotion, Aesthetics, and Society in the Cult of Our Lady of Remedios (Mexico, 1520-1811) 

      Granados Salinas, Rosario (2012-07-23)
      This study examines the cult of Our Lady of Remedios from an art-historical perspective. Choosing this specific cult statue as a case study is not arbitrary: Remedios is among the oldest Marian images in the New World and ...