| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Simulation of Dynamics in Two-Dimensional Vortex Systems in Random Media |
| ZHANG Wei, SUN Li-Zhen, LUO Meng-Bo |
| Department of Physics, Zhejiang University, Hangzhou 310027 |
|
| Cite this article: |
|
ZHANG Wei, SUN Li-Zhen, LUO Meng-Bo 2009 Chin. Phys. Lett. 26 027402 |
|
|
|
|
Abstract Dynamics in two-dimensional vortex systems with random pinning centres is investigated using molecular dynamical simulations. The driving force and temperature dependences of vortex velocity are investigated. Below the critical depinning force Fc, a creep motion of vortex is found at low temperature. At forces slightly above Fc, a part of vortices flow in winding channels at zero temperature. In the vortex channel flow region, we observe the abnormal behaviour of vortex dynamics: the velocity is roughly independent of temperature or even decreases with temperature at low temperatures. A phase diagram that describes different dynamics of vortices is presented.
|
| Keywords:
74.25.Qt
74.25.Fy
|
|
|
Received: 10 June 2008
Published: 20 January 2009
|
|
|
|
|
|
|
|
[1] Fisher D S 1983 Phys. Rev. Lett. 50 1486
[2] Andrei E Y, Deville G, Glattli D C, Williams F I B, ParisE and Etienne B 1988 Phys. Rev. Lett. 60 2765
[3] Lemerle S, Ferr\'{e J, Chappert C, Mathet V, Giamarchi Tand Le Doussal P 1998 Phys. Rev. Lett. 80 849
[4] Tybell T, Paruch P, Giamarchi T and Triscone J M 2002 Phys. Rev. Lett. 89 97601
[5] Blatter G, Feigel'man M V, Geshkenbein V B, Larkin A L andVinokur V M 1994 Rev. Mod. Phys. 66 1125
[6] Luo M B and Hu X 2007 Phys. Rev. Lett. 98267002
[7] Feigel'man M V, Geshkenbein V B, Larkin A I and Vinokur VM 1989 Phys. Rev. Lett. 63 2303
[8] Nattermann T 1990 Phys. Rev. Lett. 64 2454
[9] Chauve P, Giamarchi T and Le Doussal P 2000 Phys.Rev. B 62 6241
[10] Ning Z H, Chen K X, Yin L, Lu G, Xu X L, Guo J D, Wang FR and Yin D L 2004 Chin. Phys. Lett. 21 1340
[11] Jensen H J, Brass A and Berlinsky A J 1988 Phys.Rev. Lett. 60 1676
[12] Jensen N G, Bishop A R and Dominguez D 1996 Phys.Rev. Lett. 76 2985
[13] Moon K, Scalettar R T and Zim\'{anyi G T 1996 Phys.Rev. Lett. 77 2778
[14] Luo M B, Chen Q H, Xu Z A and Jiao Z K 2001 Chin.Phys. Lett. 18 584
[15] Fisher D S, Fisher M P A and Huse D A 1991 Phys.Rev. B 43 130
[16] Wen H H, Hoekstra A F Th, Griessen R, Yan S L, Fang L andSi M S 1997 Phys. Rev. Lett. 79 1559
[17] Wen H H, Radovan H A, Kamm F M, Ziemann P, Yan S L, FangL and Si M S 1998 Phys. Rev. Lett. 80 3859
[18] Olson C J, Reichhardt C and Nori F 1998 Phys. Rev.Lett. 81 3757
[19] White W R, Kaptulnik A and Beasley M R 1994 Phys.Rev. B 49 7084
[20] Matsushita T and Kiss T 1999 Physica C 315 12
[21] Sahin O and Ucar N 2006 Chin. Phys. Lett. 233037 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
