Publications (17)
Magnetic anisotropy and dipolar interactions in the frustrated triangular-lattice magnet NaGdS_2
J. Grumbach, E. HäuÃler, S. Luther +12
In this comprehensive study, we present results of bulk measurements (magnetization, specific heat, ac susceptibility, thermal expansion, and magnetostriction) combined with local…
First-order structural transition in the magnetically ordered phase of Fe1.13Te
S. RöÃler, Dona Cherian, W. Lorenz +8
Specific heat, resistivity, magnetic susceptibility, linear thermal expansion (LTE), and high-resolution synchrotron X-ray powder diffraction investigations of single crystals Fe1+…
Study of the variable broadband emission of Markarian 501 during the most extreme Swift X-ray activity
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +185
Mrk501 is a very high-energy (VHE) gamma-ray blazar located at z=0.034. During a period of two weeks in July 2014, the highest X-ray activity of Mrk501 was observed in ~14 years of…
Mechanism of spin crossover in LaCoO3 resolved by shape magnetostriction in pulsed magnetic fields
M. Rotter, Z. -S. Wang, A. T. Boothroyd +3
In the scientific description of unconventional transport properties of oxides (spin-dependent transport, superconductivity etc.), the spin-state degree of freedom plays a fundamen…
Tuning interactions in the spin-ice materials DyGeSiO by silicon substitution
T. Stöter, M. Antlauf, L. Opherden +10
We report that the lattice constant of DyGeSiO () can be systematically reduced by substituting the non-magnetic germanium ion in the cu…
Magnetic and electronic properties of EuInSb
M. Victoria Ale Crivillero, Sahana RöÃler, S. Granovsky +5
The intermetallic compound EuInSb, an antiferromagnetic material with nonsymmorphic crystalline structure, is investigated by magnetic, electronic transport and specifi…
Novel magnetic behavior of single crystalline Er2PdSi3
K. K. Iyer, P. L. Paulose, E. V. Sampathkumaran +7
We report the results of ac and dc magnetic susceptibility (chi) and electrical resistivity (rho) measurements on the single crystals of Er2PdSi3, crystallizing in an AlB2-derived…
Magnetic-field induced band-structure change in CeBiPt
N. Kozlova, J. Hagel, M. Doerr +11
We report on a field-induced change of the electronic band structure of CeBiPt as evidenced by electrical-transport measurements in pulsed magnetic fields. Above ~25 T, the charge-…
Anomalous quasielastic scattering contribution in the centrosymmetric multi- helimagnet SrFeO
N. D. Andriushin, J. Grumbach, A. A. Kulbakov +14
Centrosymmetric compounds which host three-dimensional topological spin structures comprise a distinct subclass of materials in which multiple- magnetic order is stabil…
Acoustic signatures of the phases and phase transitions in YbTiO
Subhro Bhattacharjee, S. Erfanifam, E. L. Green +11
We report on measurements of the sound velocity and attenuation in a single crystal of the candidate quantum- spin-ice material YbTiO as a function of temperature and m…
Specific heat in different magnetic phases of RNi2B2C (R= Gd, Ho, Er): theory and experiment
M. ElMassalami R. M. Saeed, C. M. Chaves, H. Takeya +3
The borocarbides RNi2B2C (R=Gd, Ho, Er) exhibit a large variety of magnetic states and as a consequence rich phase diagrams. We have analyzed the nature of these states by specific…
Contrasting magnetic behavior in MnSc_2X_4 (X = S, Se) spinel compounds investigated by magnetoelastic studies
J. Grumbach, J. Sourd, M. Deeb +12
The spinel compounds MnSc_2X_4 are highly frustrated and candidate materials for vortex-like 3q magnetic states, such as skyrmions, with propagation vectors in the [111] plane. Bec…
Solitonic spin-liquid state due to the violation of the Lifshitz condition in FeTe
Ph. Materne, C. Koz, U. K. RöÃler +6
A combination of phenomenological analysis and Mössbauer spectroscopy experiments on the tetragonal FeTe system indicates that the magnetic ordering transition in compound…
An intermittent extreme BL Lac: MWL study of 1ES 2344+514 in an enhanced state
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +215
Extreme High-frequency BL~Lacs (EHBL) feature their synchrotron peak of the broadband spectral energy distribution (SED) at 10\,Hz. The BL~Lac object 1ES~2…
Reentrant multiple- magnetic order and a "spin-cholesteric" phase in SrFeO
N. D. Andriushin, J. Muller, N. S. Pavlovskii +11
Spin-nematic and spin-smectic phases have been reported in magnetic materials, which break rotational symmetry while preserving translational symmetry along certain directions. How…
Magnetic-field dependence of low-energy magnons, anisotropic heat conduction, and spontaneous relaxation of magnetic domains in the cubic helimagnet ZnCr2Se4
D. S. Inosov, Y. O. Onykiienko, Y. V. Tymoshenko +12
Anisotropic low-temperature properties of the cubic spinel helimagnet ZnCr2Se4 in the single-domain spin-spiral state are investigated by a combination of neutron scattering, therm…
Extremely slow non-equilibrium monopole dynamics in classical spin ice
T. Stöter, M. Doerr, S. Granovsky +7
We report on the non-equilibrium monopole dynamics in the classical spin ice DyTiO detected by means of high-resolution magnetostriction measurements. Significant latti…