Peter Kerres
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View article: Bond Confinement‐Dependent Peierls Distortion in Epitaxially Grown Bismuth Films
Bond Confinement‐Dependent Peierls Distortion in Epitaxially Grown Bismuth Films Open
A systematic study of the impact of film thickness on the properties of thin Bi films is presented. To this end, epitaxial films of high quality have been grown on a Si (111) substrate with thicknesses ranging from 1.9 to 29.9 nm. Broadban…
View article: Decoupling Nucleation and Growth in Fast Crystallization of Phase Change Materials
Decoupling Nucleation and Growth in Fast Crystallization of Phase Change Materials Open
Disentangling nucleation and growth in materials that crystallize on the nanosecond time scale is experimentally quite challenging since the relevant processes also take place on very small, i.e., sub‐micrometer length scales. Phase change…
View article: Growth of Textured Chalcogenide Thin Films and Their Functionalization through Confinement
Growth of Textured Chalcogenide Thin Films and Their Functionalization through Confinement Open
A number of chalcogenides show a remarkable portfolio of properties, which enables a plethora of applications including thermoelectric power generation and phase change material (PCM)‐based information storage. PCMs exhibit fast and revers…
View article: Confinement‐Induced Phonon Softening and Hardening in Sb<sub>2</sub>Te<sub>3</sub> Thin Films
Confinement‐Induced Phonon Softening and Hardening in Sb<sub>2</sub>Te<sub>3</sub> Thin Films Open
Scaling effects in Sesqui‐chalcogenides are of major interest to understand and optimize their performance in heavily scaled applications, including topological insulators and phase‐change devices. A combined experimental and theoretical s…
View article: Doping by Design: Enhanced Thermoelectric Performance of GeSe Alloys Through Metavalent Bonding
Doping by Design: Enhanced Thermoelectric Performance of GeSe Alloys Through Metavalent Bonding Open
Doping is usually the first step to tailor thermoelectrics. It enables precise control of the charge‐carrier concentration and concomitant transport properties. Doping should also turn GeSe, which features an intrinsically a low carrier co…
View article: Scaling and Confinement in Ultrathin Chalcogenide Films as Exemplified by GeTe
Scaling and Confinement in Ultrathin Chalcogenide Films as Exemplified by GeTe Open
Chalcogenides such as GeTe, PbTe, Sb 2 Te 3 , and Bi 2 Se 3 are characterized by an unconventional combination of properties enabling a plethora of applications ranging from thermo‐electrics to phase change materials, topological insulator…
View article: The potential of chemical bonding to design crystallization and vitrification kinetics
The potential of chemical bonding to design crystallization and vitrification kinetics Open
Controlling a state of material between its crystalline and glassy phase has fostered many real-world applications. Nevertheless, design rules for crystallization and vitrification kinetics still lack predictive power. Here, we identify st…
View article: Crystallization and Vitrification Kinetics by Design: The Role of Chemical Bonding
Crystallization and Vitrification Kinetics by Design: The Role of Chemical Bonding Open
Controlling a state of material between its crystalline and glassy phase has fostered many real-world applications. Nevertheless, design rules for crystallization and vitrification kinetics still lack predictive power. Here, we identify st…
View article: Crystallization and Vitrification Kinetics by Design: The Role of\n Chemical Bonding
Crystallization and Vitrification Kinetics by Design: The Role of\n Chemical Bonding Open
Controlling a state of material between its crystalline and glassy phase has\nfostered many real-world applications. Nevertheless, design rules for\ncrystallization and vitrification kinetics still lack predictive power. Here,\nwe identify…
View article: Approaching the Glass Transition Temperature of GeTe by Crystallizing Ge<sub>15</sub>Te<sub>85</sub>
Approaching the Glass Transition Temperature of GeTe by Crystallizing Ge<sub>15</sub>Te<sub>85</sub> Open
Like many phase‐change materials, GeTe crystallizes upon heating at a conventional rate before the calorimetric glass transition is reached. This has so far prevented an unambiguous determination of its glass transition temperature T g . H…
View article: Stoichiometry Determination of Chalcogenide Superlattices by Means of X‐Ray Diffraction and its Limits
Stoichiometry Determination of Chalcogenide Superlattices by Means of X‐Ray Diffraction and its Limits Open
In this paper, the potential of stoichiometry determination for chalcogenide superlattices, promising candidates for next‐generation phase‐change memory, via X‐ray diffraction is explored. To this end, a set of epitaxial GeTe/Sb 2 Te 3 sup…