precipitation of Cu on Pt electrode [5]. The initial ionization of Cu atoms in the Cu/aTa 2 O 5 interface is important in the performance of the switch, in the sense that the
ionized Cu atoms are the main source of Cu ions used in the subsequent processes.
Considering the above, in this subsection, we pay attention to the interface
structures and electronic properties of Cu/a-Ta 2 O 5 /Pt heterostructure, and their
dependence on the interface O concentration and temperature [8].
3.2.1 Interface Structures and Electronic Properties of Cu/a-Ta 2 O 5 /Pt
Structure
To deepen the understanding on the structural features near the interface between Cu
(or Pt) and a-Ta 2 O 5 , three types of Cu/a-Ta 2 O 5 /Pt heterostructures were constructed:
Fig. 6 Transmission spectra and the corresponding structures for the Cu/a-Ta 2 O 5 /Pt with and
without the Cu filament between two electrodes (adopted from Ref. [6])
Atomistic Simulations for Understanding Microscopic Mechanism of. . .
103
ionized Cu atoms are the main source of Cu ions used in the subsequent processes.
Considering the above, in this subsection, we pay attention to the interface
structures and electronic properties of Cu/a-Ta 2 O 5 /Pt heterostructure, and their
dependence on the interface O concentration and temperature [8].
3.2.1 Interface Structures and Electronic Properties of Cu/a-Ta 2 O 5 /Pt
Structure
To deepen the understanding on the structural features near the interface between Cu
(or Pt) and a-Ta 2 O 5 , three types of Cu/a-Ta 2 O 5 /Pt heterostructures were constructed:
Fig. 6 Transmission spectra and the corresponding structures for the Cu/a-Ta 2 O 5 /Pt with and
without the Cu filament between two electrodes (adopted from Ref. [6])
Atomistic Simulations for Understanding Microscopic Mechanism of. . .
103