| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Controllable Negative Differential Resistance Behavior of an Azobenzene Molecular Device Induced by Different Molecule-Electrode Distances |
| FAN Zhi-Qiang**, ZHANG Zhen-Hua**, QIU Ming, DENG Xiao-Qing, TANG Gui-Ping |
| School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410004 |
|
| Cite this article: |
|
FAN Zhi-Qiang, ZHANG Zhen-Hua, QIU Ming et al 2012 Chin. Phys. Lett. 29 077305 |
|
|
|
|
Abstract We report the ab initio calculations of transport behaviors of an azobenzene molecular device which is similar to the experimental configurations. The calculated results show that the transport behaviors of the device are sensitive to the molecule-electrode distance and the currents will drop rapidly when the molecule-electrode distance changes from 1.7 Åto 2.0 Å. More interestingly, the negative differential resistance behavior can be found in our device. Nevertheless, it is not the inherent property of an azobenzene molecular device but an effect of the molecule-electrode distance. Detailed analyses of the molecular projected self-consistent Hamiltonian states and the transmission spectra of the system reveal the physical mechanism of these behaviors.
|
|
|
Received: 23 February 2012
Published: 29 July 2012
|
|
| PACS: |
73.23.-b
|
(Electronic transport in mesoscopic systems)
|
| |
85.65.+h
|
(Molecular electronic devices)
|
|
|
|
|
|
[1] Ghosh S, Halimun H, Mahapatro A K, Choi J, Lodha S and Janes D 2005 Appl. Phys. Lett. 87 233509
[2] Tsutsui M, Teramae Y, Kurokawa S and Sakai A 2006 Appl. Phys. Lett. 89 163111
[3] Andzane J, Petkov N, Livshits A I, Boland J J, Holmes J D and Erts D 2009 Nano Lett. 9 1824
[4] Dresselhaus M S, Jorio A, Hofmann M, Dresselhaus G and Saito R 2010 Nano Lett. 10 751
[5] Liu Z H, Bol A A and Haensch W 2011 Nano Lett. 11 523
[6] Li Z Y, Qian H Y, Wu J, Gu B L and Duan W H 2008 Phys. Rev. Lett. 100 206802
[7] Fan Z Q, Chen K Q, Wan Q, Zou B S, Duan W H and Shuai Z 2008 Appl. Phys. Lett. 92 263304
[8] Zhao P, Zhang Z, Wang P J, Zhang H K, Ren M J and Li F 2010 Chin. Phys. Lett. 27 027304
[9] Xiao C J, Liu D S and Zhang Y T 2011 Chin. Phys. Lett. 28 093102
[10] An Y P and Yang Z Q 2011 Appl. Phys. Lett. 99 192102
[11] Zhang C, Du M H, Cheng H P, Zhang X G, Roitberg A E and Krause J L 2004 Phys. Rev. Lett. 92 158301
[12] Zhang C, He Y, Cheng H P, Xue Y Q, Ratner M A, Zhang X G and Krstic P 2006 Phys. Rev. B 73 125445
[13] Ah Qune L F N, Akiyama H, Nagahiro T, Tamada K and Wee A T S 2008 Appl. Phys. Lett. 93 083109
[14] Mativetsky J M, Pace G, Elbing M, Rampi M A, Mayor M and Samorì P 2008 J. Am. Chem. Soc. 130 9192
[15] Angelos S, Yang Y W, Khashab N M, Stoddart J F and Zink J I 2009 J. Am. Chem. Soc. 131 11344
[16] Fan Z Q and Chen K Q 2010 Appl. Phys. Lett. 96 053509
[17] Qiu M, Zhang Z H, Deng X Q and Pan J B 2010 Appl. Phys. Lett. 97 242109
[18] Deng X Q, Zhang Z H, Zhou J C, Qiu M and Tang G P 2010 J. Chem. Phys. 132 124107
[19] Dai Z X, Zheng X H, Shi X Q and Zeng Z 2005 Phys. Rev. B 72 205408
[20] Wang S C, Lu W C, Zhao Q Z and Bernholc J 2006 Phys. Rev. B 74 195430
[21] Ji G M, Zhai Y X, Fang C F, Xu Y Q, Cui B and Liu D S 2011 Phys. Lett. A 375 1602
[22] Taylor J, Guo H and Wang J 2001 Phys. Rev. B 63 245407
[23] Brandbyge M, Mozos J L, Ordejón P, Taylor J and Stokbro K 2002 Phys. Rev. B 65 165401
[24] Soler J M, Artacho E, Gale J D, García A, Junquera J, Ordejón P and S ánchez-Portal D 2002 J. Phys. : Condens. Matter 14 2745
[25] Li Z Y, Qian H Y, Wu J, Gu P L and Duan W H 2008 Phys. Rev. Lett. 100 206802
[26] Büttiker M, Imry Y, Landauer R and Pinhas S 1985 Phys. Rev. B 31 6207
[27] Kaun C C, Larade B and Guo H 2003 Phys. Rev. B 67 121411(R)
[28] Skorodumova N Y, Simak S I, Kochetov A E and Johansson B 2007 Phys. Rev. B 75 235440
[29] Kula M, Jiang J, Lu W and Luo Y 2006 J. Chem. Phys. 125 194703
[30] Geng H, Hu Y B, Shuai Z G, Xia K, Gao H J and Chen K Q 2007 J. Phys. Chem. C 111 19098
[31] Li X F, Chen K Q, Wang L L, Long M Q, Zou B S and Shuai Z 2007 Appl. Phys. Lett. 91 133511 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
