8. 
Tunable Kondo resonance at a pristine two-dimensional Dirac semimetal on a Kondo insulator
Jinwoong Hwang, Seungseok Lee, Ji-Eun Lee, Minhee Kang, Hyejin Ryu, Hyunjeong Joo, Jonathan Denlinger, Jae-Hoon Park*, and Choongyu Hwang*
Nano Lett. 20, 7973 (2020)
[PDF preprint]
7. High-quality SnSe2 single crystal: Electronic and thermoelectric properties
Anh-Tuan Pham, Hoa T. Vu, Cheng Chang, Ly T. Trinh, Ji-Eun Lee, Hyejin Ryu, Choongyu Hwang, Sung-Kwan Mo, Jungdae Kim, Li-dong Zhao, Anh-Tuan Duong, and Sunglae Cho*
ACS Appl. Energy Mater. (ASAP)
[PDF preprint]
6. A plausible method of preparing the ideal p-n junction interface of a thermoelectric material by surface doping
Ji-Eun Lee, Jinwoong Hwang, Minhee Kang, Hyun-Jeong Joo, Hyejin Ryu, Kyoo Kim, Yongsam Kim, Namdong Kim, Anh Tuan Duong, Sunglae Cho, Sung-Kwan Mo, Choongyu Hwang*, Imjeong Ho-Soon Yang*
Appl. Surf. Sci. 520, 146314 (2020) [PDF reprint]
5. Concomitant enhancement of electron-phonon coupling and electron-electron interaction in graphene decorated with ytterbium
Minhee Kang, Jinwoong Hwang, Ji-Eun Lee, Alexei Fedorov, and Choongyu Hwang*
Appl. Surf. Sci. 467-478, 1 (2019) [PDF reprint]
4. Gapped nearly free-standing graphene on an SiC(0001) substrate induced by manganese atoms
Jinwoong Hwang, Ji-Eun Lee, Minhee Kang, Byeong-Gyu Park, Jonathan Denlinger, Sung-Kwan Mo, and Choongyu Hwang*
Appl. Sci. Converg. Technol. 27, 90 (2018) [PDF reprint]
3. Emergence of Kondo resonance in graphene intercalated with cerium
Jinwoong Hwang†, Kyoo Kim†, Hyejin Ryu, Jingul Kim, Ji-Eun Lee, Sooran Kim, Minhee Kang, Byeong-Gyu Park, Alessandra Lanzara, Jinwook Chung, Sung-Kwan Mo, Jonathan Denlinger, Byung Il Min, and Choongyu Hwang*
Nano Lett. 18, 3661 (2018) [PDF reprint]
2. Temperature-modulated electronic structure of graphene on SiC: possible roles of electron-electron interaction and strain.
Choongyu Hwang*, Jinwoong Hwang, Ji-Eun Lee, Jonathan Denlinger, and Sung-Kwan Mo
Appl. Phys. Lett. 111, 231603 (2017) [PDF reprint]
1. 
Hole doping, hybridization, and electronic correlation in graphene on a platinum substrate.
Jinwoong Hwang†, Hwihyeon Hwang†, Min-Jeong Kim, Hyejin Ryu, Ji-Eun Lee, Qin Zhou*, Sung-Kwan Mo, Jaekwang Lee, Alessandra Lanzara, and Choongyu Hwang*
Nanoscale 9, 11498 (2017) [PDF reprint]