Zobrazeno 1 - 10
of 256
pro vyhledávání: '"Keppens, V"'
Autor:
Poudel, L., de la Cruz, C., Koehler, M. R., McGuire, M. A., Keppens, V., Mandrus, D., Christianson, A. D.
Structural properties of LaCu$_{6-x}$Ag$_{x}$ have been investigated using neutron and x-ray diffraction, and resonant ultrasound spectroscopy (RUS) measurements. Diffraction measurements indicate a continuous structural transition from orthorhombic
Externí odkaz:
http://arxiv.org/abs/1706.08433
Autor:
Poudel, L., de la Cruz, C., Payzant, E. A., May, A. F., Koehler, M., Garlea, V. O., Taylor, A. E., Parker, D. S., Cao, H. B., McGuire, M. A., Tian, W., Matsuda, M., Jeen, H., Lee, H. N., Hong, T., Calder, S., Zhou, H. D., Lumsden, M. D., Keppens, V., Mandrus, D., Christianson, A. D.
Publikováno v:
Phys. Rev. B 92, 214421 (2015)
The structural and the magnetic properties of CeCu$_{6-x}$Ag$_x$ (0 $\leq$ $x$ $\leq$ 0.85) and CeCu$_{6-x}$Pd$_x$ (0 $\leq$ $x$ $\leq$ 0.4) have been studied using neutron diffraction, resonant ultrasound spectroscopy (RUS), heat capacity, x-ray dif
Externí odkaz:
http://arxiv.org/abs/1510.00363
Autor:
Aczel, A. A., Li, L., Garlea, V. O., Yan, J. -Q., Weickert, F., Vapf, V. S., Movshovich, R., Jaime, M., Baker, P. J., Keppens, V., Mandrus, D.
Publikováno v:
Phys. Rev. B 92, 041110(R) (2015)
We have investigated polycrystalline samples of the zigzag chain system BaTb$_2$O$_4$ with a combination of magnetic susceptibility, heat capacity, neutron powder diffraction, and muon spin relaxation measurements. Despite the onset of Tb$^{3+}$ shor
Externí odkaz:
http://arxiv.org/abs/1502.05668
Autor:
Aczel, A. A., Li, L., Garlea, V. O., Yan, J. -Q., Weickert, F., Jaime, M., Maiorov, B., Movshovich, R., Civale, L., Keppens, V., Mandrus, D.
Publikováno v:
Phys. Rev. B 90, 134403 (2014)
The AR$_2$O$_4$ family (R = rare earth) have recently been attracting interest as a new series of frustrated magnets, with the magnetic R atoms forming zigzag chains running along the $c$-axis. We have investigated polycrystalline BaNd$_2$O$_4$ with
Externí odkaz:
http://arxiv.org/abs/1407.4098
Autor:
Ma, J., Delaire, O., May, A. F., Carlton, C. E., McGuire, M. A., VanBebber, L. H., Abernathy, D. L., Ehlers, G., Hong, Tao, Huq, A., Tian, Wei, Keppens, V. M., Shao-Horn, Y., Sales, B. C.
Publikováno v:
Nature Nanotechnology 8, 445-451 (2013)
Materials with very low thermal conductivity are of high interest for both thermoelectric and optical phase-change applications. Synthetic nanostructuring is most promising to suppress thermal conductivity by scattering phonons, but challenges remain
Externí odkaz:
http://arxiv.org/abs/1401.2595
Publikováno v:
In Intermetallics June 2019 109:167-173
Autor:
Ghimire, N. J., McGuire, M. A., Parker, D. S., Sales, B. C., Yan, J. -Q., Keppens, V., Koehler, M., Latture, R. M., Mandrus, D.
Publikováno v:
Phys. Rev. B 85, 224405 (2012)
The noncentrosymmetric ferromagnet Cr11Ge19 has been investigated by electrical transport, AC and DC magnetization, heat capacity, x-ray diffraction, resonant ultrasound spectroscopy, and first principles electronic structure calculations. Complex it
Externí odkaz:
http://arxiv.org/abs/1204.2254
Autor:
Singh, D. J., Sefat, A. S., McGuire, M. A., Sales, B. C., Mandrus, D., VanBebber, L. H., Keppens, V.
Publikováno v:
Phys. Rev. B 79, 094429 (2009)
We report single crystal synthesis, specific heat and resistivity measurements and electronic structure calculations for BaCr$_2$As$_2$. This material is a metal with itinerant antiferromagnetism, similar to the parent phases of Fe-based high tempera
Externí odkaz:
http://arxiv.org/abs/0902.0945
Publikováno v:
Phys. Rev. Lett. 95, 125503 (2005)
We have measured the polarized Raman scattering spectra of Cd2Re2O7, the first superconducting pyrochlore, as a function of temperature. For temperatures below the cubic-to-tetragonal structural phase transition (SPT) at 200K, a peak with B1 symmetry
Externí odkaz:
http://arxiv.org/abs/cond-mat/0503756
Autor:
Poudel, L., Cruz, C. de la, Koehler, M.R., McGuire, M.A., Keppens, V., Mandrus, D., Christianson, A.D.
Publikováno v:
In Physica B: Physics of Condensed Matter 1 May 2018 536:479-482