O. Heyer

activity

20062011

most citedA New Multiferroic Material: MnWO4

173 citations · 440 across the 12 of their papers we have counts for

collaborators

Showing cond-mat.str-elShow all

8 papers · 1 filter

cond-mat.str-el2011★ 24 cited

Antiferromagnetic Heisenberg S=5/2 spin chain compound SrMn $_{2}$ V $_{2}$ O $_{8}$

Sandra K. Niesen, Oliver Heyer, Thomas Lorenz +1

Large single crystals of the new compound SrMn $_{2}$ V $_{2}$ O $_{8}$ have been grown by the floating-zone method. This transition-metal based oxide is isostructural to SrNi $_{2}$ V $_{2}$ O $_{8}$ ,…

cond-mat.str-el2010★ 20 cited

Magnetostrictive Neel ordering of the spin-5/2 ladder compound BaMn2O3: distortion-induced lifting of geometrical frustration

M. Valldor, O. Heyer, A. C. Komarek +3

The crystal structure and the magnetism of BaMn $_{2}$ O $_{3}$ have been studied by thermodynamic and by diffraction techniques using large single crystals and powders. BaMn $_{2}$ O $_{3}$ is…

cond-mat.str-el2009★ 16 cited

Phase diagram and isotope effect in (PrEu)_0.7Ca_0.3CoO_3 cobaltites exhibiting spin-state transitions

A. V. Kalinov, O. Yu. Gorbenko, A. N. Taldenkov +11

We present the study of magnetization, thermal expansion, specific heat, resistivity, and a.c. susceptibility of (Pr $_{1 - y}$ Eu $_{y}$ ) $_{0.7}$ Ca $_{0.3}$ CoO $_{3}$ cobaltites. The measure…

cond-mat.str-el2008★ 32 cited

Spin-spin correlations of the spin-ladder compound (C $_{5}$ H $_{12}$ N) $_{2}$ CuBr $_{4}$ measured by magnetostriction and comparison to Quantum Monte Carlo results

Fabrizio Anfuso, Markus Garst, Achim Rosch +4

Magnetostriction and thermal expansion of the spin-ladder compound piperidinium copper bromide (C $_{5}$ H $_{12}$ N) $_{2}$ CuBr $_{4}$ are analyzed in detail. We find perfect agreement betwee…

cond-mat.str-el2007★ 60 cited

Diverging thermal expansion of the spin-ladder system (C $_{5}$ H $_{12}$ N) $_{2}$ CuBr $_{4}$

T. Lorenz, O. Heyer, M. Garst +4

We present high-resolution measurements of the $c^{⋆}$ -axis thermal expansion and magnetostriction of piperidinium copper bromide \hp. The experimental data at low temperatures i…

cond-mat.str-el2006★ 1 cited

Thermodynamic properties of the field-induced Neel order of TlCuCl3

S. Stark, O. Heyer, A. Vasiliev +3

TlCuCl3 shows a quantum phase transition from a spin-gap phase to a Neel-ordered ground state as a function of magnetic field around H_{C0}~4.8T. From measurements of the specific…

cond-mat.str-el2006★ 22 cited

Thermodynamics of the coupled spin-dimer system TlCuCl3 close to a quantum phase transition

T. Lorenz, S. Stark, O. Heyer +4

We present thermal expansion alpha, magnetostriction and specific heat C measurements of \tal, which shows a quantum phase transition from a spin-gap phase to a Neel-ordered ground…

cond-mat.str-el2006★ 173 cited

A New Multiferroic Material: MnWO4

O. Heyer, N. Hollmann, I. Klassen +6

We report the multiferroic behaviour of MnWO $_{4}$ , a magnetic oxide with monoclinic crystal structure and spiral long-range magnetic order. Based upon recent theoretical predictions…