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Three-dimensional collective charge excitations in electron-doped copper oxide superconductors
High-temperature copper oxide superconductors consist of stacked CuO2 planes, with electronic band structures and magnetic excitations that are primarily two-dimensional1,2, but with superconductingExpand
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  • 1
  • Open Access
Thermodynamics of the up-up-down phase of theS=12triangular-lattice antiferromagnetCs2CuBr4
Specific heat and the magnetocaloric effect are used to probe the field-induced up-up-down phase of Cs2CuBr4, a quasi-two-dimensional spin-1/2 triangular antiferromagnet with near-maximalExpand
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  • Open Access
High magnetic field phase diagram of PrOs4Sb12.
The magnetic phase diagram of PrOs4Sb12 has been investigated by specific heat measurements between 8 and 32 T. A new Schottky anomaly, due to excitations between two lowestExpand
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  • Open Access
Detailed band structure of twinned and detwinned BaFe2As2 studied with angle-resolved photoemission spectroscopy
We study the band structure of twinned and detwinned BaFe$_2$As$_2$ using angle-resolved photoemission spectroscopy (ARPES). The combination of measurements in the ordered and normal state along fourExpand
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  • Open Access
Widespread spin polarization effects in photoemission from topological insulators
High-resolution spin- and angle-resolved photoemission spectroscopy (spin-ARPES) was performed on the three-dimensional topological insulator Bi2Se3 using a recently developed high-efficiencyExpand
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  • Open Access
The nature of the magnetic and structural phase transitions in BaFe$_{2}$As$_{2}$
We present the results of an investigation of both the magnetic and structural phase transitions in a high quality single crystalline sample of the undoped, iron pnictide compound BaFe$_2$As$_2$.Expand
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  • Open Access
First- and second-order magnetic and structural transitions in BaFe2(1−x)Co2xAs2
tr ≈ 0.022 and reveal the emergence of the heat-capacity anomaly associated with the onset of the structural transition at x s ≈ 0.0064. We show that the extrapolated Tc onset doping could be closeExpand
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  • Open Access
Magnetism and magnetotransport of strongly disordered Zn1−xMnxGeAs2 semiconductor: The role of nanoscale magnetic clusters
We present systematic studies of magnetic and transport properties of Zn1−xMnxGeAs2 semimagnetic semiconductor with the chemical composition varying between 0.053≤x≤0.182. The transportExpand
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  • Open Access
Effect of electron correlations on magnetic excitations in the isovalently doped iron-based superconductor Ba(Fe(1-x)Ru(x))(2)As(2).
Magnetic correlations in isovalently doped Ba(Fe(1-x)Ru(x))(2)As(2) (x = 0.25, T(c) = 14.5 K; x = 0.35, T(c) = 20 K) are studied by elastic and inelastic neutron scattering techniques. A relativelyExpand
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  • Open Access
The effects of post-growth annealing on the structural and magnetic properties of BaFe2As2.
We investigate the effects of post-growth annealing on the structural and magnetic properties of BaFe2As2. Magnetic susceptibility measurements, which exhibit a signal corresponding to the magneticExpand
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  • Open Access