A phase-change mechanism of gst-sl based superlattices upon sb flipping - Details

Author：

Sun, Teng (Sun, Teng.) | Liu, Furong (Liu, Furong.) (Scholars：刘富荣) | Guo, Jicheng (Guo, Jicheng.) | Han, Gang (Han, Gang.) | Zhang, Yongzhi (Zhang, Yongzhi.)

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Abstract：

Reversible　phase-change　behaviors　of　Ge–Sb–Te　based　superlattices　(GST-SL)　were　studied　by　ab　initio　molecular　dynamics　(AIMD)　simulations　based　on　three　models　containing　Ge/Sb　intermixing,　namely　the　Petrov-mix,　Ferro-mix,　and　Kooi-mix　models.　The　flipping　behavior　of　Sb　atoms　was　found　in　all　the　three　GST-SL　models　in　the　melting　process.　Among　them　the　Kooi-mix　model　exhibited　the　best　stability,　and　the　analyses　of　bond　length　distribution　and　electron　localization　function　provided　a　better　explanation　on　the　phase　transition　of　GST-SL.　Finally,　we　proposed　a　fast　switching　model　for　GST-SL　based　on　Sb　flipping.　©　2021　by　the　authors.　Li-censee　MDPI,　Basel,　Switzerland.

Keyword：

Bond length Molecular dynamics

Author Community：

[ 1 ] [Sun, Teng]Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 2 ] [Sun, Teng]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 3 ] [Sun, Teng]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 4 ] [Liu, Furong]Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 5 ] [Liu, Furong]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 6 ] [Liu, Furong]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 7 ] [Guo, Jicheng]Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 8 ] [Guo, Jicheng]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 9 ] [Guo, Jicheng]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 10 ] [Han, Gang]Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 11 ] [Han, Gang]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 12 ] [Han, Gang]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 13 ] [Zhang, Yongzhi]Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 14 ] [Zhang, Yongzhi]Beijing Engineering Research Center of Laser Technology, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China
[ 15 ] [Zhang, Yongzhi]Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, 100 Ping Leyuan, Chaoyang District, Beijing; 100124, China

Reprint Author's Address：

刘富荣
[liu, furong]beijing engineering research center of laser technology, beijing university of technology, 100 ping leyuan, chaoyang district, beijing; 100124, china;;[liu, furong]key laboratory of trans-scale laser manufacturing technology, beijing university of technology, ministry of education, 100 ping leyuan, chaoyang district, beijing; 100124, china;;[liu, furong]institute of laser engineering, faculty of materials and manufacturing, beijing university of technology, 100 ping leyuan, chaoyang district, beijing; 100124, china

Email：

Liufr@bjut.edu.cnemailLiufr@bjut.edu.cnemailLiufr@bjut.edu.cn) Liu, Furong(Liufr@bjut.edu.cnemailLiufr@bjut.edu.cn) Liu, Furong(Liufr@bjut.edu.cn

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