Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2
The three dimensional (3D) Dirac semimetal is a new quantum state of matter that has attracted much attention recently in physics and material science. Here, we report on the growth of large plate-like single crystals of Cd3As2 in two major orientations by a self-selecting vapor growth (SSVG) method...
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Format: | Online |
| Language: | English |
| Published: |
Nature Publishing Group
2015
|
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642520/ |
| id |
pubmed-4642520 |
|---|---|
| recordtype |
oai_dc |
| spelling |
pubmed-46425202015-11-20 Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2 Sankar, R. Neupane, M. Xu, S.-Y. Butler, C. J. Zeljkovic, I. Panneer Muthuselvam, I. Huang, F.-T. Guo, S.-T. Karna, Sunil K. Chu, M.-W. Lee, W. L. Lin, M.-T. Jayavel, R. Madhavan, V. Hasan, M. Z. Chou, F. C. Article The three dimensional (3D) Dirac semimetal is a new quantum state of matter that has attracted much attention recently in physics and material science. Here, we report on the growth of large plate-like single crystals of Cd3As2 in two major orientations by a self-selecting vapor growth (SSVG) method, and the optimum growth conditions have been experimentally determined. The crystalline imperfections and electrical properties of the crystals were examined with transmission electron microscopy (TEM), scanning tunneling microscopy (STM), and transport property measurements. This SSVG method makes it possible to control the as-grown crystal compositions with excess Cd or As leading to mobilities near 5–105 cm2V−1s−1. Zn-doping can effectively reduce the carrier density to reach the maximum residual resistivity ratio (RRRρ300K/ρ5K) of 7.6. A vacuum-cleaved single crystal has been investigated using angle-resolved photoemission spectroscopy (ARPES) to reveal a single Dirac cone near the center of the surface Brillouin zone with a binding energy of approximately 200 meV. Nature Publishing Group 2015-08-14 /pmc/articles/PMC4642520/ /pubmed/26272041 http://dx.doi.org/10.1038/srep12966 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Sankar, R. Neupane, M. Xu, S.-Y. Butler, C. J. Zeljkovic, I. Panneer Muthuselvam, I. Huang, F.-T. Guo, S.-T. Karna, Sunil K. Chu, M.-W. Lee, W. L. Lin, M.-T. Jayavel, R. Madhavan, V. Hasan, M. Z. Chou, F. C. |
| spellingShingle |
Sankar, R. Neupane, M. Xu, S.-Y. Butler, C. J. Zeljkovic, I. Panneer Muthuselvam, I. Huang, F.-T. Guo, S.-T. Karna, Sunil K. Chu, M.-W. Lee, W. L. Lin, M.-T. Jayavel, R. Madhavan, V. Hasan, M. Z. Chou, F. C. Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2 |
| author_facet |
Sankar, R. Neupane, M. Xu, S.-Y. Butler, C. J. Zeljkovic, I. Panneer Muthuselvam, I. Huang, F.-T. Guo, S.-T. Karna, Sunil K. Chu, M.-W. Lee, W. L. Lin, M.-T. Jayavel, R. Madhavan, V. Hasan, M. Z. Chou, F. C. |
| author_sort |
Sankar, R. |
| title |
Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2 |
| title_short |
Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2 |
| title_full |
Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2 |
| title_fullStr |
Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2 |
| title_full_unstemmed |
Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2 |
| title_sort |
large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional dirac semimetal cd3as2 |
| description |
The three dimensional (3D) Dirac semimetal is a new quantum state of matter that has attracted much attention recently in physics and material science. Here, we report on the growth of large plate-like single crystals of Cd3As2 in two major orientations by a self-selecting vapor growth (SSVG) method, and the optimum growth conditions have been experimentally determined. The crystalline imperfections and electrical properties of the crystals were examined with transmission electron microscopy (TEM), scanning tunneling microscopy (STM), and transport property measurements. This SSVG method makes it possible to control the as-grown crystal compositions with excess Cd or As leading to mobilities near 5–105 cm2V−1s−1. Zn-doping can effectively reduce the carrier density to reach the maximum residual resistivity ratio (RRRρ300K/ρ5K) of 7.6. A vacuum-cleaved single crystal has been investigated using angle-resolved photoemission spectroscopy (ARPES) to reveal a single Dirac cone near the center of the surface Brillouin zone with a binding energy of approximately 200 meV. |
| publisher |
Nature Publishing Group |
| publishDate |
2015 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642520/ |
| _version_ |
1613500342621700096 |