| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Prev
Next
|
|
|
Phase escape of current-biased Josephson junctions |
| Cao Wen-Hui(曹文会), Yu Hai-Feng(于海峰), Tian Ye(田野), Chen Geng-Hua(陈赓华), and Zhao Shi-Ping(赵士平)† |
| Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
|
|
|
|
Abstract Switching current distributions of an Nb/Al--AlOx/Nb Josephson junction are measured in a temperature range from 25 mK to 800 mK. We analyse the phase escape properties by using the theory of Larkin and Ovchinnikov (LO) which takes discrete energy levels into account. Our results show that the phase escape can be well described by the LO approach for temperatures near and below the crossover from thermal activation to macroscopic quantum tunneling. These results are helpful for further study of macroscopic quantum phenomena in Josephson junctions where discrete energy levels need to be considered.
|
Received: 25 November 2009
Accepted manuscript online:
|
|
PACS:
|
74.50.+r
|
(Tunneling phenomena; Josephson effects)
|
| |
74.25.Fy
|
|
| |
74.20.-z
|
(Theories and models of superconducting state)
|
|
| Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos.~10534060 and
10874231) and National Basic Research Program of China (Grant
Nos.~2006CB601007, 2006CB921107, and 2009CB929102). |
Cite this article:
Cao Wen-Hui(曹文会), Yu Hai-Feng(于海峰), Tian Ye(田野), Chen Geng-Hua(陈赓华), and Zhao Shi-Ping(赵士平) Phase escape of current-biased Josephson junctions 2010 Chin. Phys. B 19 067401
|
| [1] |
Voss R F and Webb R A 1981 Phys. Rev. Lett. 47 265
|
| [2] |
Devoret M H, Martinis J M and Clarke J 1985 Phys. Rev. Lett. 55 1908
|
| [3] |
Caldeira A O and Leggett A J 1981 Phys. Rev. Lett. 46 211
|
| [4] |
Grabert H, Olschowski P and Weiss U 1987 Phys. Rev. B 36 1931
|
| [5] |
Clarke J and Wilhelm F K 2008 Nature 453 1031
|
| [6] |
Kramers H A 1940 Physica (Utrechit) 7 284
|
| [7] |
Larkin A I and Ovchinnikov Y N 1986 Zh. Eksp. Teor. Fiz. 91 318 [1986 Sov. Phys. JETP 64 185]
|
| [8] |
Kopietz P and Chakravarty S 1988 Phys. Rev. B 38 97
|
| [9] |
Xu H, Berkley A J, Gubrud M A, Ramos R C, Anderson J R, Lobb C J and Wellstood F C 2003 IEEE Trans. Appl. Supecond. 13 956
|
| [10] |
Kivioja J M, Nieminen T E, Claudon J, Buisson O, Hekking F W J and Pekola J P 2005 Phys. Rev. Lett. 94 247002
|
| [11] |
Li S X, Qiu W, Han S Y, Wei Y F, Zhu X B, Gu C Z, Zhao S P and Wang H B 2007 Phys. Rev. Lett. 99 037002
|
| [12] |
Cui D J, Yu H F, Peng Z H, Cao W H, Zhu X B, Tian Y, Chen G H, Lin D H, Gu C Z, Zheng D N, Jing X N, Lu Li and Zhao S P 2008 Supercond. Sci. Technol. 21 125019
|
| [13] |
Cui D J, Lin D H, Yu H F, Peng Z H, Zhu X B, Zheng D N, Jing X N, Lu L and Zhao S P 2008 Acta Phys. Sin. 57 5933 (in Chinese)
|
| [14] |
Fulton T A and Dunkleberger L N 1974 Phys. Rev. B 9 4760
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|
