Strain Relaxation in “2D/2D and 2D/3D Systems”: Highly Textured Mica/Bi<sub>2</sub>Te<sub>3</sub>, Sb<sub>2</sub>Te<sub>3</sub>/Bi<sub>2</sub>Te<sub>3</sub>, and Bi<sub>2</sub>Te<sub>3</sub>/GeTe Heterostructures
Heng Zhang, Daniel T. Yimam, Sytze de Graaf, Jamo Momand, Paul A. Vermeulen, Yingfen Wei, Beatriz Noheda, Bart J. Kooi
Abstract
as directly observed at the growth surface is still present within these three different top layers a long time after growth. The observed behavior points at immediate strain relaxation by plastic deformation without any later relaxation and rules out an elastic (energy minimization) model as was proposed recently. Our work advances the understanding of strain tuning in textured heterostructures or superlattices governed by anisotropic bonding.
Topics & Concepts
HeterojunctionStrain engineeringMaterials sciencevan der Waals forceMicaRelaxation (psychology)Condensed matter physicsBismuth tellurideStrain (injury)Topological insulatorStress relaxationComposite materialThermoelectric materialsOptoelectronicsChemistryPhysicsPsychologyCreepOrganic chemistryMoleculeSocial psychologyMedicineThermal conductivityInternal medicineSilicon2D Materials and ApplicationsAdvanced Thermoelectric Materials and DevicesTopological Materials and Phenomena