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Journal Articles

Anomalous reduction of the switching voltage of Bi-doped Ge0.5Se0.5 ovonic threshold switching devices

Juhee Seo, Hyung-Woo Ahn, Sang-yeol Shin, Byung-ki Cheong, Suyoun Lee
Journal: Applied Physics Letters
Appl. Phys. Lett. 104, 153503 (2014)
https://doi.org/10.1063/1.4871385
Published: April 2014
View article titled, Anomalous reduction of the switching voltage of Bi-doped Ge<sub>0.5</sub>Se<sub>0.5</sub> ovonic threshold switching devices
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Journal Articles

Nanosecond switching in GeSe phase change memory films by atomic force microscopy

James L. Bosse, Ilya Grishin, Yong Gyu Choi, Byung-ki Cheong, Suyoun Lee, Oleg V. Kolosov, Bryan D. Huey
Journal: Applied Physics Letters
Appl. Phys. Lett. 104, 053109 (2014)
https://doi.org/10.1063/1.4863495
Published: February 2014
View article titled, Nanosecond switching in GeSe phase change memory films by atomic force microscopy
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Journal Articles

Effect of density of localized states on the ovonic threshold switching characteristics of the amorphous GeSe films

Hyung-Woo Ahn, Doo Seok Jeong, Byung-ki Cheong, Hosuk Lee, Hosun Lee, Su-dong Kim, Sang-Yeol Shin, Donghwan Kim, Suyoun Lee
Journal: Applied Physics Letters
Appl. Phys. Lett. 103, 042908 (2013)
https://doi.org/10.1063/1.4816349
Published: July 2013
View article titled, Effect of density of localized states on the ovonic threshold switching characteristics of the amorphous GeSe films
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Journal Articles

Competing local orders in liquid and amorphous structures of Ge2Sb2Te5: Influence of exchange-correlation functional

Kye Yeop Kim, Deok-Yong Cho, Byung-ki Cheong, Dohyung Kim, Hideki Horii, Seungwu Han
Journal: Journal of Applied Physics
J. Appl. Phys. 113, 134302 (2013)
https://doi.org/10.1063/1.4798380
Published: April 2013
View article titled, Competing local orders in liquid and amorphous structures of Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub>: Influence of exchange-correlation functional
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Journal Articles

Threshold resistive and capacitive switching behavior in binary amorphous GeSe

Doo Seok Jeong, Hyungkwang Lim, Goon-Ho Park, Cheol Seong Hwang, Suyoun Lee, Byung-ki Cheong
Journal: Journal of Applied Physics
J. Appl. Phys. 111, 102807 (2012)
https://doi.org/10.1063/1.4714705
Published: May 2012
View article titled, Threshold resistive and capacitive switching behavior in binary amorphous GeSe
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Journal Articles

Understanding on the current-induced crystallization process and faster set write operation thereof in non-volatile phase change memory

Dae-Hwan Kang, Nan Young Kim, Hongsik Jeong, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 100, 063508 (2012)
https://doi.org/10.1063/1.3684245
Published: February 2012
View article titled, Understanding on the current-induced crystallization process and faster set write operation thereof in non-volatile phase change memory
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Journal Articles

Controlled recrystallization for low-current RESET programming characteristics of phase-change memory with Ge-doped SbTe

Zhe Wu, Gang Zhang, Youngwook Park, Stephen D. Kang, Ho-Ki Lyeo, Doo Seok Jeong, Jeung-hyun Jeong, Kwangsoo No, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 99, 143505 (2011)
https://doi.org/10.1063/1.3641470
Published: October 2011
View article titled, Controlled recrystallization for low-current RESET programming characteristics of phase-change memory with Ge-doped SbTe
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Journal Articles

First-principles calculations on the energetics of nitrogen-doped hexagonal Ge 2 Sb 2 Te 5

Sae-Jin Kim, Jung-Hae Choi, Seung-Cheol Lee, Byung-ki Cheong, Doo Seok Jeong, Chan Park
Journal: Journal of Applied Physics
J. Appl. Phys. 107, 103522 (2010)
https://doi.org/10.1063/1.3428362
Published: May 2010
View article titled, First-principles calculations on the energetics of nitrogen-doped hexagonal Ge 2 Sb 2 Te 5
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Journal Articles

Improved stability of a phase change memory device using Ge-doped SbTe at varying ambient temperature

Zhe Wu, Suyoun Lee, Young-Wook Park, Hyung-Woo Ahn, Doo Seok Jeong, Jeung-hyun Jeong, Kwangsoo No, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 96, 133510 (2010)
https://doi.org/10.1063/1.3374334
Published: April 2010
View article titled, Improved stability of a phase change memory device using Ge-doped SbTe at varying ambient temperature
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Journal Articles

A study on the temperature dependence of the threshold switching characteristics of Ge 2 Sb 2 Te 5

Suyoun Lee, Doo Seok Jeong, Jeung-hyun Jeong, Wu Zhe, Young-Wook Park, Hyung-Woo Ahn, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 96, 023501 (2010)
https://doi.org/10.1063/1.3275756
Published: January 2010
View article titled, A study on the temperature dependence of the threshold switching characteristics of Ge 2 Sb 2 Te 5
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Journal Articles

A study on the temperature dependence of characteristics of phase change memory devices

Suyoun Lee, Doo Seok Jeong, Jeung-hyun Jeong, Wu Zhe, Young-Wook Park, Hyung-Woo Ahn, Won Mok Kim, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 95, 093504 (2009)
https://doi.org/10.1063/1.3211872
Published: September 2009
View article titled, A study on the temperature dependence of characteristics of phase change memory devices
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Journal Articles

Investigation on the role of nitrogen in crystallization of Sb-rich phase change materials

Jihoon Choi, Hyun Seok Lee, Taek Sung Lee, Suyoun Lee, Won Mok Kim, Donghwan Kim, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 95, 081905 (2009)
https://doi.org/10.1063/1.3211871
Published: August 2009
View article titled, Investigation on the role of nitrogen in crystallization of Sb-rich phase change materials
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Journal Articles

Analysis and improvement of interfacial adhesion of growth-dominant Ge-doped SbTe phase change materials

Jeung-hyun Jeong, Hyung-Woo Ahn, Suyoun Lee, Won Mok Kim, Jae-Geun Ha, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 94, 011902 (2009)
https://doi.org/10.1063/1.3064916
Published: January 2009
View article titled, Analysis and improvement of interfacial adhesion of growth-dominant Ge-doped SbTe phase change materials
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Journal Articles

Microstructural and optical analysis of superresolution phenomena due to Ge 2 Sb 2 Te 5 thin films at blue light regime

Hyun Seok Lee, Taek Sung Lee, Yongwoon Lee, Jooho Kim, Suyoun Lee, Joo-Youl Huh, Donghwan Kim, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 93, 221108 (2008)
https://doi.org/10.1063/1.3040695
Published: December 2008
View article titled, Microstructural and optical analysis of superresolution phenomena due to Ge 2 Sb 2 Te 5 thin films at blue light regime
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Journal Articles

Bias polarity dependence of a phase change memory with a Ge-doped SbTe: A method for multilevel programing

Suyoun Lee, Jeung-hyun Jeong, Taek Sung Lee, Won Mok Kim, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 92, 243507 (2008)
https://doi.org/10.1063/1.2945284
Published: June 2008
View article titled, Bias polarity dependence of a phase change memory with a Ge-doped SbTe: A method for multilevel programing
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Journal Articles

Microstructural effect on optical properties of Au : SiO 2 nanocomposite waveguide films

Sunghun Cho, Soonil Lee, Taek Sung Lee, Byung-ki Cheong, Won Mok Kim, Kyeong-Seok Lee
Journal: Journal of Applied Physics
J. Appl. Phys. 102, 123501 (2007)
https://doi.org/10.1063/1.2823611
Published: December 2007
View article titled, Microstructural effect on optical properties of Au : SiO 2 nanocomposite waveguide films
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Journal Articles

Undoped homojunction chalcogen thin-film transistors on glass

Ki-Bong Song, Sang-Su Lee, Kyung-Am Kim, Jeong-Dae Suh, Jun-Ho Kim, Taek-Sung Lee, Byung-ki Cheong, Won-Mock Kim
Journal: Applied Physics Letters
Appl. Phys. Lett. 90, 263510 (2007)
https://doi.org/10.1063/1.2753102
Published: June 2007
View article titled, Undoped homojunction chalcogen thin-film transistors on glass
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Journal Articles

Response to “Comment on ‘Investigation of the optical and electronic properties of Ge 2 Sb 2 Te 5 phase change material in its amorphous, cubic, and hexagonal phases’” [ J. Appl. Phys.   97 , 093509 ( 2005 ) ]

Bong-Sub Lee, John R. Abelson, Stephen G. Bishop, Dae-Hwan Kang, Byung-ki Cheong, Ki-Bum Kim
Journal: Journal of Applied Physics
J. Appl. Phys. 101, 026112 (2007)
https://doi.org/10.1063/1.2426907
Published: January 2007
View article titled, Response to “Comment on ‘Investigation of the optical and electronic properties of Ge 2 Sb 2 Te 5 phase change material in its amorphous, cubic, and hexagonal phases’” [ J. Appl. Phys.   97 , 093509 ( 2005 ) ]
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Journal Articles

Nanometer-scale order in amorphous Ge 2 Sb 2 Te 5 analyzed by fluctuation electron microscopy

Min-Ho Kwon, Bong-Sub Lee, Stephanie N. Bogle, Lakshmi N. Nittala, Stephen G. Bishop, John R. Abelson, Simone Raoux, Byung-ki Cheong, Ki-Bum Kim
Journal: Applied Physics Letters
Appl. Phys. Lett. 90, 021923 (2007)
https://doi.org/10.1063/1.2430067
Published: January 2007
View article titled, Nanometer-scale order in amorphous Ge 2 Sb 2 Te 5 analyzed by fluctuation electron microscopy
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Journal Articles

Thermal conductivity of phase-change material Ge 2 Sb 2 Te 5

Ho-Ki Lyeo, David G. Cahill, Bong-Sub Lee, John R. Abelson, Min-Ho Kwon, Ki-Bum Kim, Stephen G. Bishop, Byung-ki Cheong
Journal: Applied Physics Letters
Appl. Phys. Lett. 89, 151904 (2006)
https://doi.org/10.1063/1.2359354
Published: October 2006
View article titled, Thermal conductivity of phase-change material Ge 2 Sb 2 Te 5
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