119 citations · 246 across the 9 of their papers we have counts for
11 papers
Anharmonic Fluctuations Govern the Band Gap of Halide Perovskites
Stefan A. Seidl, Xiangzhou Zhu, Guy Reuveni +5
We determine the impact of anharmonic thermal vibrations on the fundamental band gap of CsPbBr, a prototypical model system for the broader class of halide perovskite semicondu…
Static and Dynamic Disorder in Formamidinium Lead Bromide Single Crystals
Guy Reuveni, Yael Diskin-Posner, Christian Gehrmann +8
We show that formamidinium lead bromide is unique among the halide perovskite crystals because its inorganic sub-lattice exhibits intrinsic local static disorder that co-exists wit…
Probing the Disorder inside the Cubic Unit Cell of Halide Perovskites from First-Principles
Xiangzhou Zhu, Sebastián Caicedo-Dávila, Christian Gehrmann +1
Strong deviations in the finite temperature atomic structure of halide perovskites from their average geometry can have profound impacts on optoelectronic and other device-relevant…
Transversal Halide Motion Intensifies Band-To-Band Transitions in Halide Perovskites
Christian Gehrmann, Sebastián Caicedo-Dávila, Xiangzhou Zhu +1
Despite their puzzling vibrational characteristics that include strong signatures of anharmonicity and thermal disorder already around room temperature, halide perovskites exhibit…
A Decentralized Dynamic PKI based on Blockchain
Mohsen Toorani, Christian Gehrmann
The central role of the certificate authority (CA) in traditional public key infrastructure (PKI) makes it fragile and prone to compromises and operational failures. Maintaining CA…
Lic-Sec: an enhanced AppArmor Docker security profile generator
Hui Zhu, Christian Gehrmann
Along with the rapid development of cloud computing technology, containerization technology has drawn much attention from both industry and academia. In this paper, we perform a co…