TY  - JOUR
AU  - Wang, Ruining
AU  - Lange, Felix R. L.
AU  - Cecchi, Stefano
AU  - Hanke, Michael
AU  - Wuttig, Matthias
AU  - Calarco, Raffaella
TI  - 2D or Not 2D: Strain Tuning in Weakly Coupled Heterostructures
JO  - Advanced functional materials
VL  - 28
IS  - 14
SN  - 1616-301X
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2019-06544
SP  - 1705901 -
PY  - 2018
AB  - A route to realize strain engineering in weakly bonded heterostructures is presented. Such heterostructures, consisting of layered materials with a pronounced bond hierarchy of strong and weak bonds within and across their building blocks respectively, are anticipated to grow decoupled from each other. Hence, they are expected to be unsuitable for strain engineering as utilized for conventional materials which are strongly bonded isotropically. Here, it is shown for the first time that superlattices of layered chalcogenides (Sb2Te3/GeTe) behave neither as fully decoupled two‐dimensional (2D) materials nor as covalently bonded three‐dimensional (3D) materials. Instead, they form a novel class of 3D solids with an unparalleled atomic arrangement, featuring a distribution of lattice constants, which is tunable. A map to identify further material combinations with similar characteristic is given. It opens the way for the design of a novel class of artificial solids with unexplored properties
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000429410400006
DO  - DOI:10.1002/adfm.201705901
UR  - https://juser.fz-juelich.de/record/867951
ER  -