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Science 5 March 2004:
Vol. 303. no. 5663, pp. 1494 - 1496
DOI: 10.1126/science.1094025
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Reports

Terahertz Magnetic Response from Artificial Materials

T. J. Yen,1* W. J. Padilla,2* N. Fang,1* D. C. Vier,2 D. R. Smith,2 J. B. Pendry,3 D. N. Basov,2 X. Zhang1{dagger}

We show that magnetic response at terahertz frequencies can be achieved in a planar structure composed of nonmagnetic conductive resonant elements. The effect is realized over a large bandwidth and can be tuned throughout the terahertz frequency regime by scaling the dimensions of the structure. We suggest that artificial magnetic structures, or hybrid structures that combine natural and artificial magnetic materials, can play a key role in terahertz devices.

1 Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, CA 90095, USA.
2 Department of Physics, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093–0319, USA.
3 Condensed Matter Theory Group, The Blackett Laboratory, Imperial College, London SW7 2AZ, UK.



* These authors contributed equally to this work.

{dagger} To whom correspondence should be addressed. E-mail: xiang{at}seas.ucla.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)