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Browsing Research and Publications - Department of Physics & Astronomy by Title

Now showing items 10-29 of 853

About AGN Ionization Echoes, Thermal, Echoes, and Ionization Deficits in Low-Redshift Lyα Blobs

Schirmer, Mischa; Malhotra, Sangeeta; Levenson, Nancy A.; Fu, Hai; Davies, Rebecca L.; Keel, William C.; Torrey, Paul; Bennert, Vardha N.; Pancoast, Ann; Turner, James E. H. (2016-07-28)
Absence of the Holographic Principle in Noncommutative Chern-Simons Theory

Pinzul, A.; Stern, Allen (2001-12-03)

We examine noncommutative Chern-Simons theory on a bounded spatial domain. We argue that upon `turning on' the noncommutativity, the edge observables, which characterized the commutative theory, move into the bulk. We show ...
Abstract: E5.00005 : Spin and Orbital Magnetic Moments of Fe and Co in Co/Fe and Fe/Co Multilayers on Si from L2,3 Edge X-ray Magnetic Circular Dichroism Spectroscopy*

Mankey, Gary (2016)

Nanostructured FeCo thin films are interesting for magnetic recording applications due to their high saturation magnetization, high Curie temperature and low magnetocrystalline anisotropy. It is desirable to know how the ...
Abstract: H29.00006 : The Quality Enhancement Plan Matrix (12 Years and Still Tweaking the Process!)

Mankey, Gary (2009)

As an alumni of the 1997 New Faculty Workshop, I've had plenty of opportunities to experiment with the teaching methods introduced there. Most recently, faculty at UA have been asked to develop a Learner-Centered approach ...
Active Nuclei and Star-Forming Objects at z > 2: Metallicities, Winds, and Formation Histories

Keel, William C.; Wu, Wentao; Waddington, Ian; Windhorst, Rogier A.; Pascarelle, Sebastian M. (2002-06)
AdS/CFT far from equilibrium in a Vaidya setup

Wondrak, Michael F.; Kaminski, Matthias; Nicolini, Piero; Bleicher, Marcus (2017)

In this paper we apply the AdS/CFT correspondence to study a strongly coupled plasma far from equilibrium with a strong emphasis on the shear behavior. The plasma serves as a model for an electrically charged quark-gluon ...
AINUR: Atlas of Images of NUclear Rings

Buta, Ronald (2010-03-11)

We present the most complete atlas of nuclear rings to date. We include 113 rings found in 107 galaxies, six of which are elliptical galaxies, five are highly inclined disc galaxies, 18 are unbarred disc galaxies and 78 ...
Almost No-Scale Supergravity

Okada, Nobuchika (Published by Institute of Physics Publishing for SISSA/ISAS, 2003-05-16)

We construct an explicit 5-dimensional supergravity model that realizes the 'no scale' mechanism for supersymmetry breaking, with all moduli stabilized consistently by low-energy dynamics in the effective theory. Supersymmetry ...
Alternative Signature of TeV Strings: Reduction in QCD Jet Production

Okada, Nobuchika (2002-11-11)

In string theory, it is well known that any hard scattering amplitude inevitably suffers exponential suppression. We demonstrate that, if the string scale is Mₛ < 2TeV, this intrinsically stringy behavior leads to a dramatic ...
Ambient-pressure CVD of Graphene on Low-index Ni Surfaces using Methane: A Combined Experimental and First-Principles Study

Mankey, Gary (2018-07-23)

The growth of large area single-layer graphene (1-LG) is studied using ambient pressure chemical vapor deposition on single-crystal Ni(111), Ni(110), and Ni(100). By varying both the furnace temperature in the range of ...
Analyticity of the Charge-Monopole Scattering Amplitude

Balachandran, A. P.; Borchardt, S.; Chang, S. S.; Stern, Allen; Cahalan, R.; Ramachandran, R.; Rupertsberger, H. (American Physical Society, 1978-02-15)

We study the analyticity in cosθ of the exact quantum-mechanical electric-charge-magnetic-monopole scattering amplitude by ascribing meaning to its formally divergent partial-wave expansion as the boundary value of an ...
Angular Dependence and Phase Diagrams of Exchange-Coupled Epitaxial Ni81Fe19/Fe50Mn50(001) Bilayers

Mewes, T.; Nembach, H.; Rickart, M.; Demokritov, S. O.; Fassbender, J.; Hillebrands, B. (2002)

The exchange bias effect, especially the angular dependence of the exchange bias field and the coercivity of the epitaxial Ni81Fe19 /Fe50Mn50 bilayer system is investigated. In order to prepare a well defined layer ...
Anisotropy Graded Media: Extending the Superparamagnetic Limit (abstract)

Mankey, Gary (2009-04-29)

The maximum storage density in magnetic media is limited by the superparamagnetic size of the grains that make up the bits. The superparamagnetic size can be reduced by increasing the anisotropy of the grains; however, in ...
Anomalous Hall Effect Behavior in (100) and (110) CrO₂ Thin Films

Mankey, Gary (2011-05-19)

First and second order magnetic anisotropy constants have been determined in (110) and (100) CrO₂ films using magnetometry and anomalous Hall effect measurements. Higher in-plane anisotropy is observed in strain-free (110) ...
Anomalous hydrodynamics kicks neutron stars

Kaminski, Matthias; Uhlemann, Christoph F.; Bleicher, Marcus; Schaffner-Bielich, Jürgen (2016)
Antiferromagnetic Phase Transitions in an Ordered Pt₃ Fe(111) Film Studied by Neutron Diffraction

Mankey, Gary (2004-07-30)

Neutron diffraction has been used to investigate the critical behavior at the onset of antiferromagnetic phase transitions in a (111) oriented Pt₇₃Fe₂₇ film grown on an α-axis oriented sapphire (α-Al₂O₃) substrate. As in ...
Antiferromagnetic Structure of FePt₃ Films Studied by Neutron Scattering

Mankey, Gary (2001-03-14)

The magnetism of antiferromagnetic FeₓPt₁₋ₓ thin films x=0.27 and 0.30) epitaxially grown onto MgO (110) and a-axis sapphire (α-Al₂O₃) substrates has been studied by elastic neutron and x-ray scattering. Bulk chemically ...
Antiferromagnetism in a Fe50Pt40Rh10 Thin Film Investigated Using Neutron Diffraction

Mankey, Gary (2008-11-12)

The temperature-dependent magnetic structure of a 200 nm thick single-crystalline film of Fe₅₀Pt₄₀Rh₁₀ was studied by unpolarized and polarized neutron diffractions. By applying structure factor calculations, a detailed ...
An Apparatus to Manipulate and Identify Individual Ba Ions from Bulk Liquid Xe

Piepke, Andreas (2014-09-23)

We describe a system to transport and identify barium ions produced in liquid xenon, as part of R&D towards the second phase of a double beta decay experiment, nEXO. The goal is to identify the Ba ion resulting from an ...
Are Debris Disks and Massive Planets Correlated?

Silverstone, Murray (2007)

Using data from the Spitzer Space Telescope Legacy Science Program Formation and Evolution of Planetary Systems (FEPS), we have searched for debris disks around nine FGK stars (2-10 Gyr), known from radial velocity (RV) ...

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Browsing Research and Publications - Department of Physics & Astronomy by Title

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