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Enhancement of surface photocurrents in topological insulators using magnetic superlattices

Lindner, Netanel H. and Refael, Gil and von Oppen, Felix (2014) Enhancement of surface photocurrents in topological insulators using magnetic superlattices. . (Submitted)

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The gapless surface states of topological insulators (TI) can potentially be used to detect and harvest low-frequency infrared light. Nonetheless, it was shown that significant surface photocurrents due to light with frequency below the bulk gap are rather hard to produce. Here we demonstrate that a periodic magnetic pattern added to the surface dramatically enhances surface photocurrents in TI's . The ability to produce substantial photocurrents on TI surfaces from mid-range and far-infrared light could be used in photovoltaic applications, as well as for detection of micrometer wavelength radiation.

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription
Lindner, Netanel H.0000-0003-1879-3902
Alternate Title:Lighting up topological insulators: large surface photocurrents from magnetic superlattices
Additional Information:Imported from arXiv.
Group:UNSPECIFIED, Institute for Quantum Information and Matter
Funding AgencyGrant Number
Packard FoundationUNSPECIFIED
NSF, Physics Frontier Center, Institute for Quantum Information and Matter (IQIM)1125565
Defense Advanced Research Projects Agency, Functional Engineered Nano Architectonics (FENA)UNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Record Number:CaltechAUTHORS:20140715-162801579
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47247
Deposited By: Jacquelyn O'Sullivan
Deposited On:16 Jul 2014 04:37
Last Modified:04 Jun 2020 10:14

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