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- Iowa State UniversityUS80 papers
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- Institute of PhysicsPL5 papers
- Institut Laue-LangevinFR5 papers
- University of Tennessee at KnoxvilleUS5 papers
- Chinese Academy of SciencesCN4 papers
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16 papers · 1 filter
Magnetic and lattice coupling in single-crystal SrFeAs: A neutron scattering study
Haifeng Li, Wei Tian, Jerel L. Zarestky +7
A detailed elastic neutron scattering study of the structural and magnetic phase transitions in single-crystal SrFeAs reveals that the orthorhombic (O)-tetragonal (T) and t…
Femtosecond Coherent Control of Spin with Light in (Ga,Mn)As ferromagnets
M. D. Kapetanakis, I. E. Perakis, K. J. Wickey +2
Using density matrix equations of motion, we predict a femtosecond collective spin tilt triggered by nonlinear, near--ultraviolet (3eV), coherent photoexcitation of (Ga,Mn)As…
Negative refractive index due to chirality
Jiangfeng Zhou, Jianfeng Dong, Thomas Koschny +2
We demonstrate experimentally and numerically that metamaterials based on bilayer cross wires give giant optical activity, circular dichroism, and negative refractive index. The pr…
Negative refractive index response of weakly and strongly coupled optical metamaterials
Jiangfeng Zhou, Thomas Koschny, Maria Kafesaki +1
e present a detailed study of the retrieved optical parameters, electrical permittivity, magnetic permeability and refractive index, of the coupled fishnet metamaterial structures…
Nonplanar Chiral Metamaterials with Negative Index
Bingnan Wang, Jiangfeng Zhou, Thomas Koschny +1
We demonstrate experimentally and numerically that nonplanar chiral metamaterials give giant optical activity, circular dichroism, and negative refractive index. The transmission,…
Local-moment ferromagnetism and unusual magnetic domains in FeTaS crystals
M. D. Vannette, S. Yeninas, E. Morosan +2
Single crystals of FeTaS have been studied by using magneto-optical (MO) imaging and radio-frequency (rf) magnetic susceptibility, . Real time MO images reveal unu…