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A Low Temperature Nonlinear Optical Rotational Anisotropy Spectrometer for the Determination of Crystallographic and Electronic Symmetries

Torchinsky, Darius H. and Chu, Hao and Qi, Tongfei and Cao, Gang and Hsieh, David (2014) A Low Temperature Nonlinear Optical Rotational Anisotropy Spectrometer for the Determination of Crystallographic and Electronic Symmetries. Review of Scientific Instruments, 85 (8). Art. No. 083102. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:20140717-142502645

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Abstract

Nonlinear optical generation from a crystalline material can reveal the symmetries of both its lattice structure and underlying ordered electronic phases and can therefore be exploited as a complementary technique to diffraction based scattering probes. Although this technique has been successfully used to study the lattice and magnetic structures of systems such as semiconductor surfaces, multiferroic crystals, magnetic thin films, and multilayers, challenging technical requirements have prevented its application to the plethora of complex electronic phases found in strongly correlated electron systems. These requirements include an ability to probe small bulk single crystals at the μm length scale, a need for sensitivity to the entire nonlinear optical susceptibility tensor, oblique light incidence reflection geometry, and incident light frequency tunability among others. These measurements are further complicated by the need for extreme sample environments such as ultra low temperatures, high magnetic fields, or high pressures. In this review we present a novel experimental construction using a rotating light scattering plane that meets all the aforementioned requirements. We demonstrate the efficacy of our scheme by making symmetry measurements on a μm scale facet of a small bulk single crystal of Sr_2IrO_4 using optical second and third harmonic generation.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1406.4411v1arXivDiscussion Paper
http://dx.doi.org/10.1063/1.4891417DOIArticle
http://scitation.aip.org/content/aip/journal/rsi/85/8/10.1063/1.4891417PublisherArticle
Additional Information:© 2014 American Institute of Physics. Received 4 May 2014; accepted 14 July 2014; published online 5 August 2014. D.H. acknowledges partial support by the U. S. Army Research Office under Grant No. W911NF-13-1-0059. Instrumentation for the NHG-RA setup was partially supported by a U. S. Army Research Office DURIP award under Grant No. W911NF-13-1-0293. D.H. acknowledges funding provided by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (PHY-1125565) with support of the Gordon and Betty Moore Foundation through Grant No. GBMF1250. G.C. acknowledges NSF support via Grant No. DMR-1265162.
Group:IQIM, Institute for Quantum Information and Matter
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)W911NF-13-1-0059
Army Research Office (ARO)W911NF-13-1-0293
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterPHY-1125565
Gordon and Betty Moore FoundationGBMF1250
NSFDMR-1265162
Record Number:CaltechAUTHORS:20140717-142502645
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140717-142502645
Official Citation:A low temperature nonlinear optical rotational anisotropy spectrometer for the determination of crystallographic and electronic symmetries Torchinsky, Darius H. and Chu, Hao and Qi, Tongfei and Cao, Gang and Hsieh, David, Review of Scientific Instruments, 85, 083102 (2014), DOI:http://dx.doi.org/10.1063/1.4891417
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47303
Collection:CaltechAUTHORS
Deposited By: Jacquelyn O'Sullivan
Deposited On:19 Jul 2014 17:13
Last Modified:11 Aug 2014 17:38

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