Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Opeil C"'
High mobility phonon-glass semimetal $CuAgSe$ has shown promise in recent years as a potential low-temperature thermoelectric material. It exhibits reasonably strong thermoelectric performance as well as an extremely high carrier mobility, both of wh
Externí odkaz:
http://arxiv.org/abs/1610.05634
Autor:
Chen, Xiang, Hogan, Tom, Walkup, D., Zhou, Wenwen, Pokharel, M., Yao, Mengliang, Tian, Wei, Ward, Thomas Z., Zhao, Y., Parshall, D., Opeil, C., Lynn, J. W., Madhavan, Vidya, Wilson, Stephen D.
Publikováno v:
Phys. Rev. B 92, 075125 (2015)
The evolution of the electronic properties of electron-doped (Sr{1-x}La{x})2IrO4 is experimentally explored as the doping limit of La is approached. As electrons are introduced, the electronic ground state transitions from a spin-orbit Mott phase int
Externí odkaz:
http://arxiv.org/abs/1506.07574
Akademický článek
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Autor:
Dhital, Chetan, Hogan, Tom, Zhou, Wenwen, Chen, Xiang, Ren, Zhensong, Pokharel, Mani, Okada, Yoshinori, Heine, M., Tian, Wei, Yamani, Z., Opeil, C., Helton, J. S., Lynn, J. W., Wang, Ziqiang, Madhavan, Vidya, Wilson, Stephen D.
Publikováno v:
Nature Communications 5, 3377 (2014)
Interest in many strongly spin-orbit coupled 5d-transition metal oxide insulators stems from mapping their electronic structures to a J=1/2 Mott phase. One of the hopes is to establish their Mott parent states and explore these systems' potential of
Externí odkaz:
http://arxiv.org/abs/1311.0783
We study the thermoelectric properties of Te-doped FeSb2 nanostructured samples. Four samples of stoichiometry FeSb1.84Te0.16 were prepared by a hot press method at temperatures of 200, 400, 500, and 600 oC. Te-doping enhances the dimensionless figur
Externí odkaz:
http://arxiv.org/abs/1303.3869
An experimental setup for determining the electrical resistivity of several types of thermoelectric materials over the temperature range 20 < T < 550 C is described in detail. One resistivity measurement during temperature cycling is also explained f
Externí odkaz:
http://arxiv.org/abs/1206.2094
Autor:
Dhital, Chetan, Khadka, Sovit, Yamani, Z., de la Cruz, Clarina, Hogan, T. C., Disseler, S. M., Pokharel, Mani, Lukas, K. C., Tian, Wei, Opeil, C. P., Wang, Ziqiang, Wilson, Stephen D.
Publikováno v:
Phys. Rev. B 86, 100401(R) (2012)
Through a neutron scattering, charge transport, and magnetization study, the correlated ground state in the bilayer iridium oxide Sr$_3$Ir$_2$O$_7$ is explored. Our combined results resolve scattering consistent with a high temperature magnetic phase
Externí odkaz:
http://arxiv.org/abs/1206.1006
The Seebeck coefficients, electrical resistivities, total thermal conductivities, and magnetization are reported for temperatures between 5 and 350 K for n-type Bi0.88Sb0.12 nano-composite alloys made by Ho-doping at the 0, 1 and 3% atomic levels. Th
Externí odkaz:
http://arxiv.org/abs/1201.6304
Autor:
Lukas, K. C., Liu, W. S., Joshi, G., Zebarjadi, M., Dresselhaus, M. S., Ren, Z. F., Chen, G., Opeil, C. P.
Nanostructuring has been shown to be an effective approach to reduce the lattice thermal conductivity and improve the thermoelectric figure of merit. Because the experimentally measured thermal conductivity includes contributions from both carriers a
Externí odkaz:
http://arxiv.org/abs/1201.5062
Neutron scattering study of magnetic phase separation in nanocrystalline La$_{5/8}$Ca$_{3/8}$MnO$_3$
Autor:
Dhital, Chetan, de la Cruz, Clarina, Opeil, C., Treat, A., Wang, K. F., Liu, J. -M., Ren, Z. F., Wilson, Stephen D.
Publikováno v:
Physical Review B 84, 144401 (2011)
We demonstrate that magnetic phase separation and competing spin order in the colossal magnetoresistive (CMR) manganites can be directly explored via tuning strain in bulk samples of nanocrystalline La$_{1-x}$Ca$_x$MnO$_3$. Our results show that stra
Externí odkaz:
http://arxiv.org/abs/1104.1571