Performance analysis of carbon nanotube contacted phase change memory by finite element method

2011 ◽  
Vol 110 (8) ◽  
pp. 084315 ◽  
Author(s):  
Wenchao Chen ◽  
Jing Guo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Carbon Nanotube ◽  
Performance Analysis ◽  
Phase Change ◽  
Phase Change Memory ◽  
Change Memory ◽  
Element Method

scholarly journals Low Power Phase Change Memory With Vertical Carbon Nanotube Electrode

2017 ◽  
Vol 5 (5) ◽  
pp. 362-366
Author(s):  
Panni Wang ◽  
Yihan Chen ◽  
Suwen Li ◽  
Salahuddin Raju ◽  
Longyan Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Low Power ◽  
Phase Change ◽  
Phase Change Memory ◽  
Change Memory

OPTIMIZATION OF PHASE CHANGE MEMORY WITH THIN METAL INSERTED LAYER ON MATERIAL PROPERTIES

2009 ◽  
Vol 23 (17) ◽  
pp. 3625-3630 ◽  
Author(s):  
SANCHAI HARNSOONGNOEN ◽  
CHIRANUT SA-NGIAMSAK ◽  
APIRAT SIRITARATIWAT
Keyword(s):  
Finite Element ◽  
Electrical Resistivity ◽  
Phase Change ◽  
High Speed ◽  
Phase Change Memory ◽  
High Energy ◽  
Thin Metal ◽  
Non Volatile Memory ◽  
Element Approach ◽  
Change Memory

This works reports, for the first time, the thorough study and optimisation of Phase Change Memory (PCM) structure with thin metal inserted chalcogenide via electrical resistivity (ρ) using finite element modeling. PCM is one of the best candidates for next generation non-volatile memory. It has received much attention recently due to its fast write speed, non-destructive readout, superb scalability, and great compatibility with current silicon-based mass fabrication. The setback of PCM is a high reset current typically higher than 1mA based on 180nm lithography. To reduce the reset current and to solve the over-programming failure, PCM with thin metal inserted chalcogenide (bottom chalcogenide/metal inserted/top chalcogenide) structure has been proposed. Nevertheless, reports on optimisation of the electrical resistivity using the finite element method for this new PCM structure have never been published. This work aims to minimize the reset current of this PCM structure by optimizing the level of the electrical resistivity of the PCM profile using the finite element approach. This work clearly shows that PCM characteristics are strongly affected by the electrical resistivity. The 2-D simulation results reveal clearly that the best thermal transfer of and self-joule-heating at the bottom chalcogenide layer can be achieved under conditions; ρ_bottom chalcogenide > ρ_metal inserted > ρ_top chalcogenide More specifically, the optimized electrical resistivity of PCMTMI is attained with ρ_top chalcogenide: ρ_metal inserted: ρ_bottom chalcogenide ratio of 1:6:16 when ρ_top chalcogenide is 10-3 Ωm. In conclusion, high energy efficiency can be obtained with the reset current as low as 0.3mA and with high speed operation of less than 30ns.

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