Peer-reviewed Journal Papers (*Corresponding author, ^#Equal contributions)

• Submitted 

  
  

  2024 

  37. Yueyang Wang, Hongxia Xue, Xiong Wang, Kenji Watanabe, Takashi Taniguchi, and Dong-Keun Ki*, "Coulomb drag in graphene/hBN/graphene moiré heterostructures", Phys. Rev. Lett. in press (2024), arXiv:2405.20393.

  36. Jiaming Zhou, Xiaoting Ma, Jingyi Gao, Eunjong Kim, Zihao Deng, Qing Rao, Wen-Di Li, Dong-Keun Ki, and Dong-Myeong Shin*, "Switchable Power Generation in Triboelectric Nanogenerator Toward Chip-Less Wearable Power Module Applications", Small 20, 2306980 (2024).

  35. Qing Rao^#, Guoyun Gao^#, Xinyu Wang, Hongxia Xue*, and Dong-Keun Ki*, "Scratching lithography, manipulation, and soldering of 2D materials using microneedle probes", AIP Adv. 14, 015333 (2024), arXiv:2308.05968, *Editor's Pick.

  34. Qing Rao, Hongxia Xue*, and Dong-Keun Ki*, "Landau-level Spectrum and the Effect of Spin-orbit Coupling in Monolayer Graphene on Transition Metal Dichalcogenides", Phys. Status Solidi B 261, 2300397 (2024), arXiv:2310.00686.

  
  

  Selected past publications 

  Qing Rao^#, Wun-Hao Kang^#, Hongxia Xue, Ziqing Ye, Xuemeng Feng, Kenji Watanabe, Takashi Taniguchi, Ning Wang, Ming-Hau Liu*, and Dong-Keun Ki*, "Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe2", Nature Commun. 14, 6124 (2023), arXiv:2303.01018.

  Heekwon Lee, Zhuoran Wang, Qing Rao, Sanghyeon Lee, Xiao Huan, Yu Liu, Jihyuk Yang, Mojun Chen, Dong-Keun Ki*, and Jitae Kim*, "Additive Manufacturing of Thermoelectric Microdevices for Four-Dimensional Thermometry", Adv. Mater. 35, 2301704 (2023). *Featured in a frontispiece

  Youngwoo Nam, Dong-Keun Ki, David Soler-Delgado, and Alberto F. Morpurgo*, "A family of finite-temperature electronic phase transitions in graphene multilayers", Science 362, 324 (2018).

  Youngwoo Nam, Dong-Keun Ki, David Soler-Delgado, and Alberto F. Morpurgo*, "Electron-hole collision limited transport in charge-neutral bilayer graphene", Nature Phys. 13, 1207 (2017).

  Zhe Wang, Dong-Keun Ki, Diego Mauro, Jun Yong Khoo, Leonid Levitov, and Alberto F. Morpurgo*, "Origin and magnitude of ‘designer’ spin-orbit interaction in graphene on semiconducting transition metal dichalcogenides", Phys. Rev. X 6, 041020 (2016), 200+ citations.

  Zhe Wang, Dong-Keun Ki, Hua Chen, Allan H. MacDonald, and Alberto F. Morpurgo*, "Strong interface-induced spin-orbit interaction in graphene on WS2" Nature Commun. 6, 8339 (2015), 400+ citations.

  Anya L. Grushina, Dong-Keun Ki, Mikito Koshino, Aurelien A. L. Nicolet, Clément Faugeras, Edward McCann, Marek Potemski, and Alberto F. Morpurgo*, "Insulating state in tetralayers reveals an even-odd interaction effect in graphene multilayers", Nature Commun. 6, 6419 (2015).

  Dong-Keun Ki, Vladimir I. Fal'ko, Dmitry A. Abanin, and Alberto F. Morpurgo*, "Observation of Even Denominator Fractional Quantum Hall Effect in Suspended Bilayer Graphene", Nano Lett. 14, 2135 (2014), 150+ citations.

  Nuno J. G. Couto, Davide Costanzo, Dong-Keun Ki, Kenji Watanabe, Takashi Taniguchi, Francisco Guinea, and Alberto F. Morpurgo*, "Random strain fluctuations as dominant disorder source for high-quality on-substrate graphene devices", Phys. Rev. X 4, 041019 (2014), 250+ citations.

  Dong-Keun Ki and Alberto F. Morpurgo*, "High-Quality Multiterminal Suspended Graphene Devices", Nano Lett. 13, 5165 (2013).

  Anya L. Grushina, Dong-Keun Ki, and Alberto F. Morpurgo*, "A ballistic pn junction in suspended graphene with split bottom gates", Appl. Phys. Lett. 102, 223102 (2013).

  Dong-Keun Ki and Alberto F. Morpurgo*, "Crossover from Coulomb Blockade to Quantum Hall Effect in Suspended Graphene Nanoribbons", Phys. Rev. Lett. 108, 266601 (2012).

  Seung-Geol Nam, Dong-Keun Ki, and Hu-Jong Lee*, "Thermoelectric transport of massive Dirac fermions in bilayer graphene", Phys. Rev. B 82, 245416 (2010), 100+ citations.

  Dong-Keun Ki and Hu-Jong Lee*, "Quantum-Hall resistances of a multiterminal top-gated graphene device", Phys. Rev. B 79, 195327 (2009). *Editors’ Suggestion

  Dong-Keun Ki, Dongchan Jeong, Jae-Hyun Choi, Hu-Jong Lee*, and Kee-Su Park, "Inelastic scattering in a mono-layer graphene sheet: A weak-localization study", Phys. Rev. B 78, 125409 (2008), 150+ citations.

  
  

  2018 - 2023 

  33. Yicong Chen, Dong-Keun Ki*, Zhibing Li, and Jun Chen*, "Concept for a fractional energy barrier tunneling junction", Appl. Phys. Lett. 123, 243503 (2023).

  32. Qing Rao^#, Wun-Hao Kang^#, Hongxia Xue, Ziqing Ye, Xuemeng Feng, Kenji Watanabe, Takashi Taniguchi, Ning Wang, Ming-Hau Liu*, and Dong-Keun Ki*, "Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe2", Nature Commun. 14, 6124 (2023), arXiv:2303.01018.

  31. Heekwon Lee, Zhuoran Wang, Qing Rao, Sanghyeon Lee, Xiao Huan, Yu Liu, Jihyuk Yang, Mojun Chen, Dong-Keun Ki*, and Jitae Kim*, "Additive Manufacturing of Thermoelectric Microdevices for Four-Dimensional Thermometry", Adv. Mater. 35, 2301704 (2023). *Featured in a frontispiece

  30. Yipu Xia^#, Degong Ding^#, Ke Xiao, Junqiu Zhang, Shaogang Xu, Daliang He, Xingyu Yue, Qing Rao, Xiong Wang, Sujuan Ding, Guoyun Gao, Hongxia Xue, Yueyang Wang, Mengfei Yuan, Wingkin Ho, Dong-Keun Ki, Hu Xu, Xiaodong Cui, Chuanhong Jin*, and Maohai Xie*, "Wafer-scale single crystalline MoSe2 and WSe2 monolayers grown by molecular beam epitaxy at low-temperature - the role of island-substrate interaction and surface steps", Nat. Sci. 3, 20220059 (2023).

  29. Jing Yu, Guoyun Gao, Wei Han*, Changting Wei, Yueyang Wang, Tianxiang Lin, Tianyu Zhang, Zhi Zheng, Dong-Keun Ki, Hongyuan Zhang, Man Ho Ng, Hang Liu, Shuangpeng Wang, Hao Wang, and Francis Chi-Chung Ling*, "Wafer-scale PLD-grown high-κ GCZO dielectrics for 2D electronics", Adv. Elec. Mater. 8, 2200580 (2022). *Featured in a front cover

  28. Peng Yang, Jiajia Zha*, Guoyun Gao, Long Zheng, Haoxin huang, Yunpeng Xia, Songcen Xu, Tengfei Xiong, Zhuomin Zhang, Zhengbao Yang, Ye Chen, Dong-Keun Ki, Juin J. Liou, Wugang Liao*, and Chaoliang Tan*, "Growth of Tellurium Nanobelts on h-BN for p-type Transistors with Ultrahigh Hole Mobility", Nano-Micro Lett. 14, 109 (2022).

  27. Rashad Rashid*, Francis Chi-Chung Ling, Shuang-Peng Wang, Ke Xiao, Xiaodong Cui, Qing Rao, and Dong-Keun Ki, "IP and OOP ferroelectricity in hexagonal γ-In2Se3 nanoflakes grown by chemical vapor deposition", J. Alloys Compd. 870, 159344 (2021).

  26. Mojun Chen, Jihyuk Yang, Zhenyu Wang, Zhaoyi Xu, Heekwon Lee, Hyeonseok Lee, Zhiwen Zhou, Shien-Ping Feng, Sanghyeon Lee, Jaeyeon Pyo, Seung Kwon Seol, Dong-Keun Ki, and Ji Tae Kim*, "3D Nanoprinting of Perovskites", Adv. Mater. 31, 1904073 (2019). *Featured in a front cover

  25. Youngwoo Nam, Dong-Keun Ki, David Soler-Delgado, and Alberto F. Morpurgo*, "A family of finite-temperature electronic phase transitions in graphene multilayers", Science 362, 324 (2018).

  
  

  Before 2017 

  24. Youngwoo Nam, Dong-Keun Ki, David Soler-Delgado, and Alberto F. Morpurgo*, "Electron-hole collision limited transport in charge-neutral bilayer graphene", Nature Phys. 13, 1207 (2017).

  23. Lin Wang, N. Chepiga, Dong-Keun Ki, L. Li, F. Li, W. Zhu, Y. Kato, Y. Kato, O. S. Ovchinnikova, F. Mila, I. Martin, D. Mandrus, and Alberto F. Morpurgo*, "Controlling the topological sector of magnetic solitons in exfoliated Cr1/3NbS2 crystals", Phys. Rev. Lett. 118, 257203 (2017). *Editors’ Suggestion

  22. Zhe Wang, Dong-Keun Ki, Diego Mauro, Jun Yong Khoo, Leonid Levitov, and Alberto F. Morpurgo*, "Origin and magnitude of ‘designer’ spin-orbit interaction in graphene on semiconducting transition metal dichalcogenides", Phys. Rev. X 6, 041020 (2016).

  21. Lin Wang, Ignacio Gutiérrez-Lezama, Céline Barreteau, Dong-Keun Ki, Enrico Giannini, and Alberto F. Morpurgo*, "Direct observation of long-range field-effect from gate tuning of non-local conductivity", Phys. Rev. Lett. 117, 176601 (2016). *Editors’ Suggestion

  20. Youngwoo Nam, Dong-Keun Ki*, Mikito Koshino, Edward McCann, and Alberto F. Morpurgo*, "Interaction-induced insulating state in thick multilayer graphene", 2D Mater. 3, 045014 (2016).

  19. Zhe Wang, Dong-Keun Ki, Hua Chen, Allan H. MacDonald, and Alberto F. Morpurgo*, "Strong interface-induced spin-orbit interaction in graphene on WS2" Nature Commun. 6, 8339 (2015).

  18. Anya L. Grushina, Dong-Keun Ki, Mikito Koshino, Aurelien A. L. Nicolet, Clément Faugeras, Edward McCann, Marek Potemski, and Alberto F. Morpurgo*, "Insulating state in tetralayers reveals an even-odd interaction effect in graphene multilayers", Nature Commun. 6, 6419 (2015).

  17. Nuno J. G. Couto, Davide Costanzo, Dong-Keun Ki, Kenji Watanabe, Takashi Taniguchi, Francisco Guinea, and Alberto F. Morpurgo*, "Random strain fluctuations as dominant disorder source for high-quality on-substrate graphene devices", Phys. Rev. X 4, 041019 (2014).

  16. Dong-Keun Ki, Vladimir I. Fal'ko, Dmitry A. Abanin, and Alberto F. Morpurgo*, "Observation of Even Denominator Fractional Quantum Hall Effect in Suspended Bilayer Graphene", Nano Lett. 14, 2135 (2014).

  15. Dong-Keun Ki and Alberto F. Morpurgo*, "High-Quality Multiterminal Suspended Graphene Devices", Nano Lett. 13, 5165 (2013).

  14. Christophe Caillier, Dong-Keun Ki, Yuliya Lisunova, Laroslav Gaponenko, Patrycja Paruch, and Alberto F. Morpurgo*, "Identification of a strong contamination source for graphene in vacuum systems", Nanotech. 24, 405201 (2013).

  13. Anya L. Grushina, Dong-Keun Ki, and Alberto F. Morpurgo*, "A ballistic pn junction in suspended graphene with split bottom gates", Appl. Phys. Lett. 102, 223102 (2013).

  12. Dong-Keun Ki and Alberto F. Morpurgo*, "Crossover from Coulomb Blockade to Quantum Hall Effect in Suspended Graphene Nanoribbons", Phys. Rev. Lett. 108, 266601 (2012).

  11. Seung-Geol Nam, Dong-Keun Ki, Jong Wan Park, Youngwook Kim, Jun Sung Kim, and Hu-Jong Lee*, "Ballistic transport of graphene pnp junctions with embedded local gates", Nanotech. 22, 415203 (2011). *IOP Select

  10. Sanghyun Jo, Dong-Keun Ki, Dongchan Jeong, Hu-Jong Lee*, and Stefan Kettemann, "Spin relaxation properties in graphene due to its linear dispersion", Phys. Rev. B 84, 075453 (2011).

  9. Seung-Geol Nam, Dong-Keun Ki, and Hu-Jong Lee*, "Thermoelectric transport of massive Dirac fermions in bilayer graphene", Phys. Rev. B 82, 245416 (2010).

  8. Dong-Keun Ki, Seung-Geol Nam, Hu-Jong Lee*, and Barbaros Özyilmaz, "Dependence of quantum-Hall conductance on the edge-state equilibration position in a bipolar graphene sheet", Phys. Rev. B 81, 033301 (2010).

  7. Dong-Keun Ki and Hu-Jong Lee*, "Quantum-Hall resistances of a multiterminal top-gated graphene device", Phys. Rev. B 79, 195327 (2009). *Editors’ Suggestion

  6. Dong-Keun Ki, Sanghyun Jo, and Hu-Jong Lee*, "Observation of chiral quantum-Hall edge states in graphene", Appl. Phys. Lett. 94, 162113 (2009). *Selected for the May 4, 2009 issue of Virtual Journal of Nanoscale Science & Technology

  5. Dong-Keun Ki, Dongchan Jeong, Jae-Hyun Choi, Hu-Jong Lee*, and Kee-Su Park, "Inelastic scattering in a mono-layer graphene sheet: A weak-localization study", Phys. Rev. B 78, 125409 (2008).

  4. Dongchan Jeong, Dong-Keun Ki, Myung-Ho Bae, Hu-Jong Lee, Chul-Ho Lee, Jinkyoung Yoo, and Gyu-Chul Yi*, "Observation of Single-Electron Transport in a Zn0.8Mg0.2O/ZnO Coaxial Heterostructure Nanorod", J. Korean Phys. Soc. 53, 962 (2008).

  3. Dong-Keun Ki and Hu-Jong Lee*, "Observation of Spin-Singlet Proximity Effect in a Superconductor/Ferromagnet Interface", J. Korean Phys. Soc. 52, 386 (2008).

  2. Yong-Duk Jin, Dong-Keun Ki, and Hu-Jong Lee*, "Josephson Vortex Dynamics in Tilted Magnetic Fields", Prog. Supercond. 9, 140 (2008).

  1. Jonghwa Eom*, Yun-Sok Shin, Hu-Jong Lee, Dong-Kun Kie, Taegon Kim, and Jonghan Song, "Coexistence of the Kondo and the Superconducting Proximity Effects in AuFe/Al Loops", J. Korean Phys. Soc. 48, 446 (2006).

Invited Articles

• 2009

  2. Dong-Keun Ki and Hu-Jong Lee, "그래핀의 전자수송 특성 (Electron transport properties of graphene)", 물리학과 첨단기술 (Physics and High Technology), published by Korean Physical Society 18, No 7 / 8 (2009). *written in Korean

  1. Hu-Jong Lee and Dong-Keun Ki, "Transport Properties in Graphene", APCTP Bulletin 23-24, page 7-12 (2009).