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pro vyhledávání: '"Hammerath F."'
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Autor:
Hammerath, F., Bali, R., Huebner, R., Brandt, M. R. D., Rodan, S., Potzger, K., Boettger, R., Sakuraba, Y., Buechner, B., Wurmehl, S.
We investigated the structure-property relationship of Co$_2$MnSi Heusler thin films upon the irradiation with He$^+$ ions. The variation of the crystal structure with increasing ion fluence has been probed using nuclear magnetic resonance (NMR) and
Externí odkaz:
http://arxiv.org/abs/1809.07097
Autor:
Hammerath, F., Sarkar, R., Kamusella, S., Baines, C., Klauss, H. -H., Dey, T., Maljuk, A., Gaß, S., Wolter, A. U. B., Grafe, H. -J., Wurmehl, S., Büchner, B.
Publikováno v:
Phys. Rev. B 96, 165108 (2017)
The cubic double perovskite Ba$_2$YIrO$_6$ has been investigated by the local probe techniques nuclear magnetic resonance ($^{89}$Y NMR) and muon spin rotation (muSR). Both methods confirm the absence of magnetic long-range order in this compound but
Externí odkaz:
http://arxiv.org/abs/1707.06027
Autor:
Hess, C., Grafe, H., Kondrat, A., Lang, G., Hammerath, F., Wang, L., Klingeler, R., Behr, G., Büchner, B.
Publikováno v:
Phys. Status Solidi B, 254, 1600214 (2017)
Orbital ordering has recently emerged as another important state in iron based superconductors, and its role for superconductivity as well as its connection to magnetic order and orthorhombic lattice distortion are heavily debated. In order to search
Externí odkaz:
http://arxiv.org/abs/1604.03860
Autor:
Lang, G., Veyrat, L., Graefe, U., Hammerath, F., Paar, D., Behr, G., Wurmehl, S., Grafe, H. -J.
Publikováno v:
Phys. Rev. B 94, 014514 (2016)
Using nuclear quadrupole resonance, the phase diagram of 1111 $R$FeAsO$_{1-x}$F$_x$ ($R$$=$La, Ce, Sm) iron pnictides is constructed as a function of the local charge distribution in the paramagnetic state, which features low-doping-like (LD-like) an
Externí odkaz:
http://arxiv.org/abs/1508.06532
Autor:
Hammerath, F., Moroni, M., Bossoni, L., Sanna, S., Kappenberger, R., Wurmehl, S., Wolter, A. U. B., Afrassa, M. A., Kobayashi, Y., Sato, M., Büchner, B., Carretta, P.
Publikováno v:
Phys.Rev.B 92, 020505(R) (2015)
$^{19}$F NMR measurements in optimally electron-doped La$_{1-y}$Y$_{y}$Fe$_{1-x}$Mn$_{x}$AsO$_{0.89}$F$_{0.11}$ superconductors are presented. In these materials the effect of Mn doping on the superconducting phase is studied for two series of compou
Externí odkaz:
http://arxiv.org/abs/1504.04352
Autor:
Hammerath, F., Brüning, E. M., Sanna, S., Utz, Y., Beesetty, N. S., Saint-Martin, R., Revcolevschi, A., Hess, C., Büchner, B., Grafe, H. -J.
Publikováno v:
Phys. Rev. B 89, 184410 (2014)
We report $^{63}$Cu nuclear magnetic resonance and muon spin rotation measurements on the S=1/2 antiferromagnetic Heisenberg spin chain compound Sr$_{1.9}$Ca$_{0.1}$CuO$_3$. An exponentially decreasing spin-lattice relaxation rate 1/T$_1$ indicates t
Externí odkaz:
http://arxiv.org/abs/1403.2890
Autor:
Hammerath, F., Bonfá, P., Sanna, S., Prando, G., De Renzi, R., Kobayashi, Y., Sato, M., Carretta, P.
Publikováno v:
Phys. Rev. B 89, 134503 (2014)
A superconducting-to-magnetic transition is reported for LaFe$_{1-x}$Mn$_x$AsO$_{0.89}$F$_{0.11}$ where a per thousand amount of Mn impurities is dispersed. By employing local spectroscopic techniques like muon spin rotation (muSR) and nuclear quadru
Externí odkaz:
http://arxiv.org/abs/1401.7576
Autor:
Hammerath, F., Gräfe, U., Kühne, H., Kuhns, P. L., Reyes, A. P., Lang, G., Wurmehl, S., Büchner, B., Carretta, P., Grafe, H. -J.
Publikováno v:
Phys. Rev. B 88, 104503 (2013)
The evolution of low-energy spin dynamics in the iron-based superconductor LaFeAsO$_{1-x}$F$_x$ was studied over a broad doping, temperature, and magnetic field range (x = 0 - 0.15, T up to 480K, H up to 30T) by means of As nuclear magnetic resonance
Externí odkaz:
http://arxiv.org/abs/1307.3138
Autor:
Hammerath, F., Nishimoto, S., Grafe, H. -J., Wolter, A. U. B., Kataev, V., Ribeiro, P., Hess, C., Drechsler, S. -L., Buechner, B.
Publikováno v:
Phys. Rev. Lett. 107, 017203 (2011)
We report a comparative study of 63Cu Nuclear Magnetic Resonance spin lattice relaxation rates, T_1^{-1}, on undoped SrCuO_2 and Ca doped Sr_{0.9}Ca_{0.1}CuO_2 spin chain compounds. A temperature independent T_1^{-1} is observed for SrCuO_2 as expect
Externí odkaz:
http://arxiv.org/abs/1103.1793