Superconductivity in heavily boron-doped silicon carbide (2008)
Kriener, M., Muranaka, T., Kato, J., Ren, Z. A., Akimitsu, J., Maeno, Y.
The discoveries of superconductivity in heavily boron-doped diamond (C:B) in 2004 and silicon (Si:B) in 2006 renew the interest in the superconducting state of semiconductors. Charge-carrier doping...
Superconductivity of hexagonal heavily-boron doped silicon carbide (2008)
Kriener, M., Muranaka, T., Kato, J., Akimitsu, J., Maeno, Y.
In 2004 the discovery of superconductivity in heavily boron-doped diamond (C:B) led to an increasing interest in the superconducting phases of wide-gap semiconductors. Subsequently superconductivity...
Berggold, K., Kriener, M., Becker, P., Benomar, M., Reuther, M., Zobel, C., ...
We present a combined study of the thermal expansion and the thermal conductivity of the perovskite series RCoO_3 with R = La, Nd, Pr and Eu. The well-known spin-state transition in LaCoO_3 is...
Specific heat and electronic states of superconducting boron-doped silicon carbide (2008)
Kriener, M., Maeno, Y., Oguchi, T., Kato, J., Muranaka, T., ...
The discoveries of superconductivity in the heavily-boron doped semiconductors diamond (C:B) in 2004 and silicon (Si:B) in 2006 have renewed the interest in the physics of the superconducting state...
Magnetic and structural transitions in La$_{1-x}A_{1-x}$CoO$_{3}$, $A$ = Ca, Sr, and Ba (2008)
Kriener, M., Braden, M., Kierspel, H., Senff, D., Zabara, O., Zobel, C., ...
We report thermal-expansion, lattice-constant, and specific-heat data of the series La$_{1-x}A_x$CoO$_3$ for $0\leq x \leq 0.30$ with $A$ = Ca, Sr, and Ba. For the undoped compound LaCoO$_3$ the...
Senff, D., Schumann, O., Benomar, M., Kriener, M., Lorenz, T., Sidis, Y., ...
The magnetic correlations in the charge- and orbital-ordered manganite La(0.5)Sr(1.5)MnO(4) have been studied by elastic and inelastic neutron scattering techniques. Out of the well-defined CE-type...
Magnetoelastic coupling in RETiO3 (RE = La, Nd, Sm, Gd, Y) (2007)
Komarek, A. C., Roth, H., Cwik, M., Baier, J., Kriener, M., ...
A detailed analysis of the crystal structure in RETiO3 with RE = La, Nd, Sm, Gd, and Y reveals an intrinsic coupling between orbital degrees of freedom and the lattice which cannot be fully...
Magnetoelastic coupling across the metamagnetic transition in Ca2- x Sr x RuO4 (0.2 (2007)
Baier, J, Steffens, P, Schumann, O, Kriener, M, Stark, S, Hartmann, H, ...
Baier, J., Steffens, P., Schumann, O., Kriener, M., Stark, S., Hartmann, H., ...
The magnetoelastic coupling in Ca$_{1.8}$Sr$_{0.2}$RuO$_4$ and in Ca$_{1.5}$Sr$_{0.5}$RuO$_4$ has been studied combining high-resolution dilatometer and diffraction techniques. Both compounds exhibit...
Evidence for Multiple Phase Transitions in La_1-xCa_xCoO_3 (2006)
Kriener, M., Braden, M., Senff, D., Zabara, O., Lorenz, T.
We report thermal-expansion and specific-heat data of the series La_1-xCa_xCoO_3 for 0
Thermodynamic Properties of (Ca,Sr)$_2$RuO$_4$ in Magnetic Fields (2005)
Baier, J., Zabel, T., Kriener, M., Steffens, P., Schumann, O., Friedt, O., ...
We have studied the influence of a magnetic field on the thermodynamic properties of Ca$_{2-x}$Sr$_{x}$RuO$_4$ in the intermediate metallic region with tilt and rotational distortions ($0.2\leq x...
Magnetic heat transport in R$_2$CuO$_4$ (R = La, Pr, Nd, Sm, Eu, and Gd) (2005)
Berggold, K., Lorenz, T., Baier, J., Kriener, M., Senff, D., Roth, H., ...
We have studied the thermal conductivity $\kappa$ on single crystalline samples of the antiferromagnetic monolayer cuprates R$_2$CuO$_4$ with R = La, Pr, Nd, Sm, Eu, and Gd. For a heat current within...
Thermal conductivity of R2CuO4, with R = La, Pr and Gd (2005)
Berggold, K., Lorenz, T., Baier, J., Kriener, M., Senff, D., Barilo, S., ...
We present measurements of the in-plane kappa_ab and out-of-plane kappa_c thermal conductivity of Pr2CuO4 and Gd2CuO4 single crystals. The anisotropy gives strong evidence for a large contribution of...
Zero-field incommensurate spin-Peierls phase with interchain frustration in TiOCl (2005)
Rückamp, R., Baier, J., Kriener, M., Haverkort, M. W., Lorenz, T., Uhrig, G. S., ...
We report on the magnetic, thermodynamic and optical properties of the quasi-one-dimensional quantum antiferromagnets TiOCl and TiOBr, which have been discussed as spin-Peierls compounds. The...
Thermal Conductivity, Thermopower, and Figure of Merit of La_{1-x}Sr_xCoO_3 (2005)
Berggold, K., Kriener, M., Zobel, C., Reichl, A., Freimuth, A., Lorenz, T.
We present a study of the thermal conductivity k and the thermopower S of single crystals of La_{1-x}Sr_xCoO_3 with 0
Braden, M, Friedt, O, Schumann, O, Baier, J, Steffens, P, Kriener, M, ...
Kriener, M, Steffens, P, Baier, J, Schumann, O, Zabel, T, Lorenz, T, ...
The crystal structure of Ca2-xSrxRuO4 with 0.2
Kriener, M., Steffens, P., Baier, J., Schumann, O., Zabel, T., Lorenz, T., ...
The crystal structure of Ca_{2-x}Sr_xRuO_4 with 0.2 < x < 1.0 has been studied by diffraction techniques and by high resolution capacitance dilatometry as a function of temperature and magnetic...
Spin-State Transition and Metal-Insulator Transition in La$_{1-x}$Eu$_x$CoO$_3$} (2004)
Baier, J., Jodlauk, S., Kriener, M., Reichl, A., Zobel, C., Kierspel, H., ...
We present a study of the structure, the electric resistivity, the magnetic susceptibility, and the thermal expansion of La$_{1-x}$Eu$_x$CoO$_3$. LaCoO$_3$ shows a temperature-induced spin-state...
Structure, Magnetization and Resistivity of La$_{1-x}$M$_x$CoO$_3$ (M = Ca, Sr, and Ba) (2004)
Kriener, M., Zobel, C., Reichl, A., Baier, J., Cwik, M., Berggold, K., ...
We present an investigation of the influence of structural distortions in charge-carrier doped \lmco by substituting La$^{3+}$ with alkaline earth metals of strongly different ionic sizes, that is M...
Evidence for a Low-Spin to Intermediate-Spin State Transition in LaCoO3 (2002)
Zobel, C., Kriener, M., Bruns, D., Baier, J., Gr"uninger, M., Lorenz, T., ...
We present measurements of the magnetic susceptibility and of the thermal expansion of a LaCoO$_3$ single crystal. Both quantities show a strongly anomalous temperature dependence. Our data are...