Publications (10)
From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO
J. W. Simonson, Z. P. Yin, M. Pezzoli +17
Widespread adoption of superconducting technologies requires the discovery of new materials with enhanced properties, especially higher superconducting transition temperatures T$_{…
Antiferromagnetic Exchange, Hund's Coupling and the Origin of the Charge Gap in LaMnPO
D. E. McNally, J. W. Simonson, K. W. Post +12
We present inelastic neutron scattering and magnetization measurements of the antiferromagnetic insulator LaMnPO that are well described by a Heisenberg spin model. These measureme…
A Layer Correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test
E. Abat, J. M. Abdallah, T. N. Addy +482
A new method for calibrating the hadron response of a segmented calorimeter is developed and successfully applied to beam test data. It is based on a principal component analysis o…
Magnetic transition and spin fluctuations in the unconventional antiferromagnetic compound Yb3Pt4
S. Zhao, D. E. MacLaughlin, O. O. Bernal +4
Muon spin rotation and relaxation measurements have been carried out on the unconventional antiferromagnet Yb_3Pt_4. Oscillations are observed below T_N = 2.22(1) K, consistent wit…
Gap states in insulating LaMnPOF (x = 0 - 0.3)
J. W. Simonson, K. Post, C. Marques +4
Infrared transmission and electrical resistivity measurements reveal that single crystals of LaMnPOF (x 0.28) are insulating. The optical gap obtained from tra…
Searching Neutrino-Nucleus Coherent Scattering with Mössbauer Spectroscopy
C. Marques, G S Dias, H. S. Chaves +1
The Mössbauer technique is proposed as an alternative experimental procedure to be used in the detection of Coherent Elastic -Nucleus Scattering (CENNS). The -boson exc…
Supersymmetry Breaking at Finite Temperature in a Susy Harmonic Oscillator with Interaction
C. Marques, GS Dias, FC Khanna +1
Supersymmetry breaking of a supersymmetric harmonic oscillator with polynomial interaction is analyzed. Some thermal effects are studied in the context of Thermo Field Dynamics (TF…
Determination of the magnetic structure of Yb3Pt4: a k=0 local-moment antiferromagnet
Y. Janssen, M. S. Kim, K. S. Park +8
We have used neutron diffraction measurements to study the zero-field magnetic structure of the intermetallic compound Yb3Pt4, which was earlier found to order antiferromagneticall…
Magnetic field tuning of antiferromagnetic YbPt
L. S. Wu, Y. Janssen, C. Marques +8
We present measurements of the specific heat, magnetization, magnetocaloric effect and magnetic neutron diffraction carried out on single crystals of antiferromagnetic YbPt$_…
Lorentz violation in simple QED processes
G. P. de Brito, J. T. Guaitolini Junior, D. Kroff +2
We determine the effect of a CPT-even and Lorentz violating non-minimal coupling on the differential cross sections for some of the most important tree-level processes in QED, name…