Zobrazeno 1 - 10
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pro vyhledávání: '"Lang, Michael A."'
In conventional ferroelectrics the electric dipoles are generated by off-center displacements of ions. In recent years, a new type of so-called electronic ferroelectrics has attracted great attention, where the polarization is driven by electronic de
Externí odkaz:
http://arxiv.org/abs/2409.13836
Autor:
Warawa, Konstantin, Agarmani, Yassine, Schubert, Harald, Dressel, Martin, Lang, Michael, Roskos, Hartmut G., Thomson, Mark D.
We investigate experimentally the ultrafast changes in the spectral response of the Mott insulator $\kappa$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Cl ($\kappa$-Cl) upon photodoping with intense excitation at 1.6 eV and probing with continuum pulses simultaneousl
Externí odkaz:
http://arxiv.org/abs/2310.18761
Autor:
Thomas, Tatjana, Agarmani, Yassine, Hartmann, Steffi, Kartsovnik, Mark, Kushch, Natalia, Winter, Stephen M., Schmid, Sebastian, Lunkenheimer, Peter, Lang, Michael, Mueller, Jens
Using a combination of resistance fluctuation (noise) and dielectric spectroscopy we investigate the nature of relaxor-type electronic ferroelectricity in the organic conductor $\kappa$-(BETS)$_2$Mn[N(CN)$_2$]$_3$, a system representative for a wider
Externí odkaz:
http://arxiv.org/abs/2310.17242
Autor:
Saito, Yohei, Ganter, Owen, Shang, Chao, Hashimoto, Kenichiro, Sasaki, Takahiko, Winter, Stephen M., Müller, Jens, Lang, Michael
Publikováno v:
Phys. Rev. Research 6, 023003 (2024)
We present results of the coefficient of thermal expansion for the frustrated quasi-two-dimensional molecular conductor $\theta$-(BEDT-TTF)$_2$RbZn(SCN)$_4$ for temperatures 1.5 K $\leq T \leq$ 290 K. A pronounced first-order phase transition anomaly
Externí odkaz:
http://arxiv.org/abs/2310.16637
Autor:
Geeraerts, Dirk, author, Speelman, Dirk, author, Heylen, Kris, author, Montes, Mariana, author, De Pascale, Stefano, author, Franco, Karlien, author, Lang, Michael, author
Externí odkaz:
https://doi.org/10.1093/oso/9780198890676.001.0001
Autor:
Wolf, Bernd, Lundbeck, Theresa, Zimmermann, Jan, Peters, Marius, Kliemt, Kristin, Krellner, Cornelius, Lang, Michael
We present results of the magnetic susceptibility on high-quality single crystals of EuPd$_2$(Si$_{1-x}$Ge$_x$)$_2$ for Ge concentrations 0 $\leq x \leq$ 0.105 performed under varying hydrostatic (He-gas) pressure 0 $\leq p \leq$ 0.5 GPa. The work ex
Externí odkaz:
http://arxiv.org/abs/2303.07767
Autor:
Peters, Marius, Kliemt, Kristin, Ocker, Michelle, Wolf, Bernd, Puphal, Pascal, Tacon, Matthieu Le, Merz, Michael, Lang, Michael, Krellner, Cornelius
Publikováno v:
Phys. Rev. Materials 7, 064405 (2023)
EuPd$_2$Si$_2$ is a valence-fluctuating system undergoing a temperature-induced valence crossover at $T'_V\approx160\,$K. We present the successful single crystal growth using the Czochralski method for the substitution series EuPd$_2$(Si$_{1-x}$Ge$_
Externí odkaz:
http://arxiv.org/abs/2303.07472
Autor:
Eibisch, Paul, Thurn, Christian, Ata, Arif, Tutsch, Ulrich, Saito, Yohei, Hartmann, Steffi, Wolf, Bernd, Hanna, Abanoub R. N., Islam, A. T. M. Nazmul, Chillal, Shravani, Lake, Bella, Lang, Michael
PbCuTe$_2$O$_6$ is considered as one of the rare candidate materials for a three-dimensional quantum spin liquid (QSL). This assessment was based on the results of various magnetic experiments, performed mainly on polycrystalline material. More recen
Externí odkaz:
http://arxiv.org/abs/2302.13774
Autor:
Lang, Michael, Kumar, Kiran Suresh
Publikováno v:
Macromolecules 54, 2021, 7021
We develop a simple recursive approach to treat reversible condensation polymerization with cyclization. Based upon a minimum set of balance equations, the law of mass action, Gaussian chain statistics, and the assumption of independent reactions, we
Externí odkaz:
http://arxiv.org/abs/2302.04483
Autor:
Lang, Michael, Kumar, Kiran Suresh
Publikováno v:
Macromolecules 54, 2021, 7036
In a preceding work [M. Lang, K. Kumar, A simple and general approach for reversible condensation polymerization with cyclization, Macromolecules 54 (2021) 7021], we have introduced a simple recursive scheme that allows to treat stepwise linear rever
Externí odkaz:
http://arxiv.org/abs/2302.04082