The authors use time-resolved cavity-enhanced magneto-optical Kerr spectroscopy to study the damping of magnetization precession in individual cylindrical nickel nanomagnets. A wide range of shapes (diameters of and aspect ratio: 0.03–1.2) is investigated. They observe a pronounced difference in damping between the micro- and nanomagnets. Microscale magnets show large damping at low bias fields, whereas nanomagnets exhibit bias field-independent damping. This behavior is explained by the interaction of in-plane and out-of-plane precession modes in microscale magnets that results in additional dissipative channels. The small and robust damping values on the nanoscale are promising for implementation of controlled precessional switching schemes in nanomagnetic devices.
Skip Nav Destination
Article navigation
14 May 2007
Research Article|
May 17 2007
Size dependent damping in picosecond dynamics of single nanomagnets
A. Barman;
A. Barman
a)
School of Engineering,
University of California
, Santa Cruz, 1156 High Street, Santa Cruz, California 95064
Search for other works by this author on:
S. Wang;
S. Wang
School of Engineering,
University of California
, Santa Cruz, 1156 High Street, Santa Cruz, California 95064
Search for other works by this author on:
J. Maas;
J. Maas
Department of Electrical and Computer Engineering,
Brigham Young University
, 459 Clyde Building, Provo, Utah 84604
Search for other works by this author on:
A. R. Hawkins;
A. R. Hawkins
Department of Electrical and Computer Engineering,
Brigham Young University
, 459 Clyde Building, Provo, Utah 84604
Search for other works by this author on:
S. Kwon;
S. Kwon
b)
Molecular Foundry,
Lawrence Berkeley National Laboratory
, Berkeley, California 94720
Search for other works by this author on:
J. Bokor;
J. Bokor
Molecular Foundry,
Lawrence Berkeley National Laboratory
, Berkeley, California 94720
Search for other works by this author on:
A. Liddle;
A. Liddle
Molecular Foundry,
Lawrence Berkeley National Laboratory
, Berkeley, California 94720
Search for other works by this author on:
H. Schmidt
H. Schmidt
c)
School of Engineering,
University of California
, Santa Cruz, 1156 High Street, Santa Cruz, California 95064
Search for other works by this author on:
a)
Also at: Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
b)
Present address: School of Electrical Engineering, Seoul National University, Seoul 155-744, South Korea.
c)
Electronic mail: [email protected]
Appl. Phys. Lett. 90, 202504 (2007)
Article history
Received:
February 07 2007
Accepted:
April 24 2007
Citation
A. Barman, S. Wang, J. Maas, A. R. Hawkins, S. Kwon, J. Bokor, A. Liddle, H. Schmidt; Size dependent damping in picosecond dynamics of single nanomagnets. Appl. Phys. Lett. 14 May 2007; 90 (20): 202504. https://doi.org/10.1063/1.2740588
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Roadmap on photonic metasurfaces
Sebastian A. Schulz, Rupert. F. Oulton, et al.
Broadband transparency in terahertz free-standing anapole metasurface
Isaac Appiah Otoo, Alexey Basharin, et al.
Related Content
Detecting single nanomagnet dynamics beyond the diffraction limit in varying magnetostatic environments
Appl. Phys. Lett. (February 2011)
Dynamic separation of nanomagnet sublattices by orientation of elliptical elements
Appl. Phys. Lett. (April 2014)
Spin transfer by nonuniform current injection into a nanomagnet
Appl. Phys. Lett. (May 2006)
Characterization of the magnetization reversal of perpendicular Nanomagnetic Logic clocked in the ns-range
AIP Advances (March 2016)
Highly stable signal propagation in a consecutively tuned nanomagnet array
J. Appl. Phys. (February 2013)