Details

Autor(en) / Beteiligte

• Pérez-Junquera, A
• Marconi, V I
• Kolton, A B
• Alvarez-Prado, L M
• Souche, Y
• Alija, A
• Vélez, M
• Anguita, J V
• Alameda, J M
• Martín, J I
• Parrondo, J M R

Titel

Crossed-ratchet effects for magnetic domain wall motion

Ist Teil von

• Physical review letters, 2008-01, Vol.100 (3), p.037203-037203, Article 037203

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2008

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• We study both experimentally and theoretically the driven motion of domain walls in extended amorphous magnetic films patterned with a periodic array of asymmetric holes. We find two crossed-ratchet effects of opposite sign that change the preferred sense for domain wall propagation, depending on whether a flat or a kinked wall is moving. By solving numerically a simple phi(4) model we show that the essential physical ingredients for this effect are quite generic and could be realized in other experimental systems involving elastic interfaces moving in multidimensional ratchet potentials.