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9 papers · 1 filter
Giant electro-thermal conductivity and spin-phonon coupling in an antiferromagnetic oxide
C. Chiorescu, J. J. Neumeier, J. L. Cohn
The application of weak electric fields (<~ 100 V/cm) is found to dramatically enhance the lattice thermal conductivity of the antiferromagnetic (AF) insulator CaMnO(3) over a broa…
Hydrostatic pressure effects on the electrical transport properties of Pr0.5Sr0.5MnO3
F. J. Rueckert, M. Steiger, B. K. Davis +3
We studied single-crystalline Pr0.5Sr0.5MnO3 by means of measurements of magnetic susceptibility and specific heat at ambient pressure (P), and electrical resistivity (r) in hydros…
Relationship between macroscopic physical properties and local distortions of low doping La{1-x}Ca{x}MnO3: an EXAFS study
Y. Jiang, F. Bridges, L. Downward +1
A temperature-dependent EXAFS investigation of La{1-x}Ca{x}MnO3 is presented for the concentration range that spans the ferromagnetic-insulator (FMI) to ferromagnetic-metal (FMM) t…
Scanning tunneling spectroscopy of inhomogeneous electronic structure in monolayer and bilayer graphene on SiC
Victor W. Brar, Yuanbo Zhang, Yossi Yayon +6
We present a scanning tunneling spectroscopy (STS) study of the local electronic structure of single and bilayer graphene grown epitaxially on a SiC(0001) surface. Low voltage topo…
Symmetry Breaking in Few Layer Graphene Films
Aaron Bostwick, Taisuke Ohta, Jessica L. McChesney +4
Recently, it was demonstrated that the quasiparticle dynamics, the layer-dependent charge and potential, and the c-axis screening coefficient could be extracted from measurements o…
Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
K. Gilmore, Y. U. Idzerda, M. D. Stiles
The Landau-Lifshitz equation reliably describes magnetization dynamics using a phenomenological treatment of damping. This paper presents first-principles calculations of the dampi…