48 citations · 122 across the 11 of their papers we have counts for
11 papers
Impact of hydrogen incorporation on electronic and magnetic structure of X2CrNi18-9 stainless steel
Torben Tappe, Louis Becker, Gaurav Kanu +7
Hydrogen absorption significantly alters the mechanical properties of steel. However, absorbed hydrogen also influences its electronic and magneto-structural properties, helping to…
Influence of Charge Density Waves on the Hall coefficient in NiTi
Adrian Braun, Henrik Dick, Timon Sieweke +4
We present a mean-field charge density wave theory for NiTi using density functional theory bandstructure as a starting point. We calculate the Hall coefficient as a function of te…
NiTi Single Crystal Growth by Micro-Pulling-Down Method: Experimental Setup and Material Characterization
Timon Sieweke, Chris Luther, Martin Wortmann +14
Nickel-titanium that has an austenite to martensite phase transition has been studied extensively in the past as a shape memory alloy, but a lot remains to be learned from such pha…
Surface Oxidation of SnTe Analyzed by Self-Consistent Fitting of all Emission Peaks in its X-ray Photoelectron Spectrum
Martin Wortmann, Beatrice Bednarz, Negin Beryani Nezafat +11
X-ray photoelectron spectroscopy (XPS) is among the most widely used methods for surface characterization. Currently, the analysis of XPS data is almost exclusively based on the ma…
Ab initio study of transition paths between (meta)stable phases of Nb and Ta-substituted Nb
Susanne Kunzmann, Thomas Hammerschmidt, Gabi Schierning +1
Although Niobium is a well characterized material it still shows some anomalies that are not yet understood. Therefore we revisit its metastable phases using density functional the…
Fluctuation-Dissipation in Thermoelectrics
Ngoc Anh Minh Tran, Aditya Savitha Dutt, Nithin Bharadwaj Pulumati +8
Thermoelectric materials exhibit correlated transport of charge and heat. The Johnson-Nyquist noise formula for spectral density of voltage fluctuations accounts for…
The thermoelectric conversion efficiency problem: Insights from the electron gas thermodynamics close to a phase transition
I. Khomchenko, A. Ryzhov, F. Maculewicz +10
The bottleneck in modern thermoelectric power generation and cooling is the low energy conversion efficiency of thermoelectric materials. The detrimental effects of lattice phonons…
Thermoelectric determination of electronic entropy change in Ni-doped FeRh
Nicolás Pérez, Alisa Chirkova, Konstantin P. Skokov +5
The net entropy change corresponding to the charge carriers in a Ni-doped FeRh bulk polycrystal was experimentally evaluated in a single sample using low temperature heat capacity…
Spatially Resolved Determination of Thermal Conductivity by Raman Spectroscopy
B. Stoib, S. Filser, J. Stötzel +6
We review the Raman shift method as a non-destructive optical tool to investigate the thermal conductivity and demonstrate the possibility to map this quantity with a micrometer re…
Laser-sintered thin films of doped SiGe nanoparticles
Benedikt Stoib, Tim Langmann, Sonja Matich +10
We present a study of the morphology and the thermoelectric properties of short-pulse laser-sintered (LS) nanoparticle (NP) thin films, consisting of SiGe alloy NPs or composites o…
From nanoparticles to nanocrystalline bulk: Field assisted sintering of silicon nanoparticles
D. Schwesig, G. Schierning, R. Theissmann +4
Nanocrystalline bulk materials are desirable for many applications as they combine mechanical strength and specific electronic transport properties. Our bottom up approach starts w…