Transport spectroscopy for electronic bands in carbon-based nanomaterials with weak-bond contacts
2016.04.22 14:35
| 장소 | #1323(1st Floor. E6-2) |
|---|---|
| 일시 | April 26 (Tue), 4PM |
| 연사 | Dr. Myung-Ho Bae, Korea Research Institute of Standards and Science |
Transport spectroscopy for electronic bands in carbon-based nanomaterials with weak-bond contacts
April 26 (Tue), 4PM, #1323(1st Floor. E6-2)
Dr. Myung-Ho Bae, Korea Research Institute of Standards and Science
As a consequence of their unique electronic band structures, carbon-based nanomaterials (CNMs) such as carbon nanotubes and graphene exhibit intriguing quantum transports when incorporated into field-effect transistors (FETs) in which the contact resistance represents the coupling strength between the nanosystem and the bulk system. Here, we report a new aspect of CNM quantum devices that offers transport spectroscopy in the tunnelling regime of ~1 eV and directly reflects the electronic density of states. This was accomplished using physisorption contacts with the CNMs. Our first-principles calculations reveal that charge transfer is rare between the physisorption-contacted electrodes and CNMs. Therefore, the physisorption-contacted electrode forms a physisorption interface with a considerable vacuum gap and causes little disruption to the density of states of the CNM near the contact.
Contact: Chan-Ho Yang, Physics Dept., (chyang@kaist.ac.kr)
댓글 0
| 번호 | 일시 | 장소 | 연사 | 제목 |
|---|---|---|---|---|
| 공지 | 2019/09/18 - 12/5 | Seminar Room #1323 | Prof. David Schuster and etc. | Fall 2019: Physics Seminar Serises |
| 공지 | 2019/09/02 - 12/09 | Seminar Room 1501 | 이호성 박사 (한국표준과학연구원) and etc. | Fall 2019: Physics Colloquium |
| 109 | Nov. 16 (Wed), 4p.m. | #1323(E6-2. 1st fl.) | Dr. Heung-Sik Kim , University of Toronto | Realizing Haldane Model in Fe-based Honeycomb Ferromagnetic Insulators |
| 108 | Nov. 10th(Thu) 4 p.m. | E6-2. #1323(1st fl.) | Prof. Min Seok Jang, Electrical Engineering, KAIST | Low Dimensional Active Plasmonics and Electron Optics in Graphene |
| 107 | Nov. 11th (Fri), 4 p.m. | #1323(E6-2. 1st fl.) | Dr. Bohm-Jung Yang, SNU | Dirac fermions in condensed matters |
| 106 | Nov. 11th(Fri), 1:30 p.m. | #1323(E6-2. 1st fl.) | Dr. Keun Su Kim, POSTECH | Bandgap Engineering of Black Phosphorus |
| 105 | Nov. 04 (Fri), 3:00 PM | E6-2. #1323(1st fl.) | Dr. Dohun Kim, Department of Physics and Astronomy, SNU | Quantum information experiments using few electron spins in semiconductors |
| 104 | Nov. 04 (Fri), 1:30 PM | E6-2. #1323(1st fl.) | Dr. Jonghyun Song, Department of Physics, Chungnam National University | Exotic phenomena at oxide LaAlO3/SrTiO3 hetero-interface and their applications |
| 103 | Nov. 1st (Tue), 10:30AM | #1323(E6-2 1st fl.) | Dr. Gadi Eisenstein, Technion | Time scale dependent dynamics in InAs/InP quantum dot gain media |
| 102 | Oct. 27th(Thu) 4PM | #1323(E6-2) | Dr. 이 강 희, KAIST, Mechnical Engineering | Terahertz Metal Optics |
| 101 | Nov. 1 (Tue.) 2:30 pm | Seminar Room #1323(E6-2) | Prof. Youngjoon Kwon, Yonsei Univ. | Search for dark sector particles in the B-factory experiments |
| 100 | Oct. 17th (Mon) 11:00 AM | #1323,(E6-2, 1st fl.) | Nguyen Quang Liem, Institute of Materials Science, VAST, Viettnam | IMS and examples of the studies on optoelectronic materials |
| 99 | Oct. 18 (Tue.), 3PM | E6-2. 1st fl. #1323 | Dr. JunHo Suh, Korea Research Institute of Standards and Science | “Hybrid quantum systems with mechanical oscillators” |
| 98 | Oct. 18 (Tue.), 1:30 PM | 1st fl. #1323(E6-2) | Dr. Chan-Ho Yang, Department of Physics, KAIST | "Visualization of oxygen vacancy in motion and the interplay with electronic conduction" |
| 97 | Oct. 07 (Fri), 4:00 PM | E6-2. #1323(1st fl.) | Dr. Choong Hyun Kim,IBS-CCES, Seoul National University | “Tilt engineering of 4d and 5d transition metal oxides?” |
| 96 | Oct. 07 (Fri), 1:30 PM | E6-2. #1323(1st fl.) | Dr. Suk Bum Chung, IBS-CCES , Seoul National University | “Symmetry and topology in transition metal dichalcogenide?” |
| 95 | 2016/09/29-12/13 | E6-2, #1323 | Sangyoon Han 외 |
2016 Fall, Physics Seminar Serises
 |
| 94 | Sep. 29th(Thu), 4PM | E6-2 #1323 (1st floor) | Dr. Sangyoon Han, Department of Physics, KAIST | Large-scale Silicon Photonic MEMS Switches |
| 93 | Sep. 29 (Thu), 4:00 PM | E6-2. #2501(2nd fl.) | Dr. Minu Kim, Institute for Basic Science, Seoul National University | Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip? |
| 92 | Sep. 22, 2016(Thu), 3:30 PM | #1323(E6-2, 1st fl.) | Dr. Haiyang Yan (Institute of Nuclear Physics and Chemistry) | Polarized 3He, Polarized Neutrons and New Interactions beyond the Standard Model |
| 91 | 4pm, Sep. 21 (Wed. | E6-2. #2502(2nd fl.) | Dr. Henrik Johannesson , University of Gothenburg (Sweden) and Beijing Computational Science Research Center (China) | Entanglement probe of two-impurity Kondo physics |
| 90 | Sep. 22, 2016(Thu), 3:30 PM | #1323(E6-2, 1st fl.) | Dr. Haiyang Yan (Institute of Nuclear Physics and Chemistry) | Polarized 3He, Polarized Neutrons and New Interactions beyond the Standard Model |