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pro vyhledávání: '"Horvat, J"'
Density-functional theory may be used to predict both the frequency and the dipole moment of the fundamental oscillations of molecular crystals. Suitably polarized photons at those frequencies excite such oscillations. Thus, in principle, terahertz s
Externí odkaz:
http://arxiv.org/abs/2208.10343
Autor:
Constable, E., Squires, A. D., Horvat, J., Lewis, R. A., Appadoo, D., Plathe, R., Roy, P., Brubach, J. -B., deBrion, S., Pimenov, A., Deng, G.
Publikováno v:
Phys. Rev. B 100, 184305 (2019)
The low energy lattice dynamics of the quasi-periodic spin-ladder cuprate Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$ are investigated using terahertz frequency synchrotron radiation. A high density of low-lying optical excitations are present in the 1-3 THz
Externí odkaz:
http://arxiv.org/abs/1907.09739
Publikováno v:
Journal of Chemical Physics; 9/14/2023, Vol. 159 Issue 10, p1-7, 7p
Publikováno v:
In Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 5 January 2021 244
Autor:
Dou, S. X., Yeoh, W. K., Shcherbakova, O., Horvat, J., Qin, M. J., Li, Y., Ren, Z. M., Munroe, P.
Magnetic field of up to 12 T was applied during the sintering process of pure MgB2 and carbon nanotube (CNT) doped MgB2 wires. We have demonstrated that magnetic field processing results in grain refinement, homogeneity and significant enhancement in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601191
Publikováno v:
Appl. Phys. Lett. 87, 102503 (2005)
Interaction between the superconductor and ferromagnet in MgB2/Fe wires results in either a plateau or a peak effect in the field dependence of transport critical current, Ic(H). This is in addition to magnetic shielding of external field. Current th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507510
Iron is an important sheath material for fabrication of MgB2 wires. However, the effect of Fe doping on the superconducting properties of MgB2 remains controversial. In this work, we present results of nano-scale Fe particle doping in to MgB2. The Fe
Externí odkaz:
http://arxiv.org/abs/cond-mat/0409408
Publikováno v:
J. Appl. Phys. 96 (2004) 4342
High quality bulk MgB2 exhibit a structure of voids and agglomeration of crystals on different length-scales. Because of this, the superconducting currents percolate between the voids in the ensuing structure. Magnetic measurements reveal that the su
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402353
Two types of MgB2 films were prepared by pulsed laser deposition (PLD) with in situ and ex situ annealing processes respectively. Significant differences in properties between the two types of films were found. The ex situ MgB2 film has a Tc of 38.1K
Externí odkaz:
http://arxiv.org/abs/cond-mat/0311556
A series of MgB2 thin films were fabricated by pulsed laser deposition (PLD), doped with various amounts of Si up to a level of 18wt%. Si was introduced into the PLD MgB2 films by sequential ablation of a stoichiometric MgB2 target and a Si target. T
Externí odkaz:
http://arxiv.org/abs/cond-mat/0311055