Zobrazeno 1 - 10
of 534
pro vyhledávání: '"Roessler, S."'
Autor:
Mydeen, K., Kasinathan, D., Koz, C., Rößler, S., Rößler, U. K., Hanfland, M., Tsirlin, A. A., Schwarz, U., Wirth, S., Rosner, H., Nicklas, M.
Publikováno v:
Phys. Rev. Lett. 119, 227003 (2017)
A rapid and anisotropic modification of the Fermi-surface shape can be associated with abrupt changes in crystalline lattice geometry or in the magnetic state of a material. In this study we show that such an electronic topological transition is at t
Externí odkaz:
http://arxiv.org/abs/1711.10745
Autor:
Roessler, S., Jiao, Lin, Kim, D. -J., Seiro, S., Rasim, K., Steglich, F., Tjeng, L. H., Fisk, Z., Wirth, S.
SmB$_6$, a so called Kondo insulator, is recently discussed as a candidate material for a strong topological insulator. We present detailed atomically resolved topographic information on the (001) surface from more than a dozen SmB$_6$ samples. Atomi
Externí odkaz:
http://arxiv.org/abs/1512.07072
Autor:
Materne, Ph., Koz, C., Rößler, U. K., Doerr, M., Goltz, T., Klauss, H. H., Schwarz, U., Wirth, S., Rößler, S.
Publikováno v:
PRL, 115, 177203 (2015)
A combination of phenomenological analysis and M\"ossbauer spectroscopy experiments on the tetragonal Fe$_{1+y}$Te system indicates that the magnetic ordering transition in compounds with higher Fe-excess, $y\ge$ 0.11, is unconventional. Experimental
Externí odkaz:
http://arxiv.org/abs/1510.07486
Publikováno v:
J. Phys.: Cond. Matt., 27, 205702, 2015
We investigated the evolution of the temperature-composition phase diagram of Fe$_{1+y}$Te upon Se substitution. In particular, the effect of Se substitution on the two-step, coupled magneto-structural transition in Fe$_{1+y}$Te single crystals is in
Externí odkaz:
http://arxiv.org/abs/1505.02542
Publikováno v:
Proc. Natl. Acad. Sci. USA 111 (2014) 4798 (OPEN ACCESS)
We present results of Scanning Tunneling Microscopy and Spectroscopy (STS) measurements on the "Kondo insulator" SmB$_6$. The vast majority of surface areas investigated was reconstructed but, infrequently, also patches of varying size of non-reconst
Externí odkaz:
http://arxiv.org/abs/1309.6754
Autor:
Koz, C., Rößler, S., Tsirlin, A. A., Kasinathan, D., Börrnert, C., Hanfland, M., Rosner, H., Wirth, S., Schwarz, U.
Publikováno v:
Phys. Rev. B 86, 094505 (2012)
We report the effects of hydrostatic pressure on the temperature-induced phase transitions in Fe1.08Te in the pressure range 0-3 GPa using synchrotron powder x-ray diffraction (XRD). The results reveal a plethora of phase transitions. At ambient pres
Externí odkaz:
http://arxiv.org/abs/1209.1255
Autor:
Rößler, S., Cherian, Dona, Lorenz, W., Doerr, M., Koz, C., Curfs, C., Prots, Yu., Rößler, U. K., Schwarz, U., Elizabeth, Suja, Wirth, S.
Publikováno v:
Phys. Rev. B 84, 174506 (2011)
Specific heat, resistivity, magnetic susceptibility, linear thermal expansion (LTE), and high-resolution synchrotron X-ray powder diffraction investigations of single crystals Fe1+yTe (0.06 < y < 0.15) reveal a splitting of a single, first-order tran
Externí odkaz:
http://arxiv.org/abs/1209.1209
Autor:
Rößler, S., Cherian, Dona, Harikrishnan, S., Bhat, H. L., Elizabeth, Suja, Mydosh, J. A., Tjeng, L. H., Steglich, F., Wirth, S.
Publikováno v:
Phys. Rev. B, 82, 144523 (2010)
We have investigated the influence of Fe-excess on the electrical transport and magnetism of Fe1+yTe0.5Se0.5 (y=0.04 and 0.09) single crystals. Both compositions exhibit resistively determined superconducting transitions (Tc) with an onset temperatur
Externí odkaz:
http://arxiv.org/abs/1209.1211
Phase transitions and rare-earth magnetism in hexagonal and orthorhombic DyMnO$_{3}$ single crystals
Autor:
Harikrishnan, S, Roessler, S, Kumar, C M Naveen, Bhat, H L, Roessler, U K, Wirth, S, Steglich, F, Elizabeth, Suja
Publikováno v:
J.Phys.:Condens.Matter 21 (2009) 096002
The floating-zone method with different growth ambiances has been used to selectively obtain hexagonal or orthorhombic DyMnO$_{3}$ single crystals. The crystals were characterized by X-ray powder diffraction of ground specimen and a structure refinem
Externí odkaz:
http://arxiv.org/abs/0902.3803
Publikováno v:
In Materials Science & Engineering C 1 December 2018 93:265-276
