RECENT RESEARCH HIGHLIGHTS
Current driven magnetization dynamics in ferromagnetic nanowires with Dzyaloshinskii-Moriya interaction
We study current induced magnetization dynamics in a long thin
ferromagnetic wire with Dzyaloshinskii-Moriya interaction (DMI). We
find a spiral domain wall configuration of the magnetization and
obtain an analytical expression for the width of the domain wall as a
function of the interaction strengths. Above a
certain value of DMI a domain wall configuration cannot exist in the
wire. Below this value we determine the domain wall dynamics for small
currents, and calculate the drift velocity of the domain wall along
the wire. We show that the DMI suppresses the minimum value of
current required to move the domain wall. Depending on its sign, the
DMI increases or decreases the domain wall drift velocity.
The work is reported in arXiv:0912.4732.
This movie shows the domain-wall dynamics in a nanowire with DMI.
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Dr. Oleg Tretiakov
Physics Department
4242 TAMU
College Station, TX 77843-4242
Tel: (979) 458-7977
Oleg Tretiakov's Curriculum Vitae
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MY RESEARCH
My primary scientific interests are in
broad areas of strongly correlated systems, nanomagnetism,
and mesoscopic physics. During the course of my research I
have used both analytical and numerical techniques. The
majority of my work either has built on observations made
in recent experiments or predicts new phenomena that are
feasibly observable in the near future.
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Research supported by:
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Texas A&M University, Physics Department
College Station, TX 77843-4242 | Phone: (979) 458-7977 |
Fax: (979) 845-2590