Ratchet effect in surface electromigration: Smoothing surfaces by an ac field

被引:100
作者
Derenyi, I
Lee, C
Barabasi, AL [1 ]
机构
[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
[2] Eotvos Lorand Univ, Dept Atom Phys, H-1088 Budapest, Hungary
关键词
D O I
10.1103/PhysRevLett.80.1473
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We demonstrate that for surfaces that have a nonzero Schwoebel barrier the application of an ac field parallel to the surface induces a net electromigration current that points in the descending step direction. The magnitude of the current is calculated analytically and compared with Monte Carlo simulations. Since a downhill current smoothes the surface, our results imply that the application of ac fields can aid the smoothing process during annealing and can slow or eliminate the Schwoebel-barrier-induced mound formation during growth. [S0031-9007(97)05220-4].
引用
收藏
页码:1473 / 1476
页数:4
相关论文
共 22 条
[1]  
AJDARI A, 1992, CR ACAD SCI II, V315, P1635
[2]   FLUCTUATION DRIVEN RATCHETS - MOLECULAR MOTORS [J].
ASTUMIAN, RD ;
BIER, M .
PHYSICAL REVIEW LETTERS, 1994, 72 (11) :1766-1769
[3]   Thermodynamics and kinetics of a Brownian motor [J].
Astumian, RD .
SCIENCE, 1997, 276 (5314) :917-922
[4]  
Barabasi A-Ls, 1995, FRACTAL CONCEPTS SUR, DOI [10.1017/CBO9780511599798, DOI 10.1017/CBO9780511599798]
[5]   COOPERATIVE TRANSPORT OF BROWNIAN PARTICLES [J].
DERENYI, I ;
VICSEK, T .
PHYSICAL REVIEW LETTERS, 1995, 75 (03) :374-377
[6]   NONEQUILIBRIUM FLUCTUATION-INDUCED TRANSPORT [J].
DOERING, CR ;
HORSTHEMKE, W ;
RIORDAN, J .
PHYSICAL REVIEW LETTERS, 1994, 72 (19) :2984-2987
[7]   OPTICAL THERMAL RATCHET [J].
FAUCHEUX, LP ;
BOURDIEU, LS ;
KAPLAN, PD ;
LIBCHABER, AJ .
PHYSICAL REVIEW LETTERS, 1995, 74 (09) :1504-1507
[8]  
ICHIKAWA M, 1990, VACUUM, V41, P923
[9]   DEPENDENCE OF ELECTROMIGRATION RATE ON APPLIED ELECTRIC-POTENTIAL [J].
JO, BH ;
VOOK, RW .
APPLIED SURFACE SCIENCE, 1995, 89 (03) :237-249
[10]   STABLE AND UNSTABLE GROWTH IN MOLECULAR-BEAM EPITAXY [J].
JOHNSON, MD ;
ORME, C ;
HUNT, AW ;
GRAFF, D ;
SUDIJONO, J ;
SANDER, LM ;
ORR, BG .
PHYSICAL REVIEW LETTERS, 1994, 72 (01) :116-119