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Part B: Condensed Matter Physics

Photoemission investigations of URu2Si2

Pages 3723-3736 | Received 11 Apr 2014, Accepted 23 May 2014, Published online: 24 Jul 2014
 

Abstract

A brief review of selected experimental photoemission works on URu2Si2 spanning almost 25 years is presented. We focus on the areas of importance for both the paramagnetic (PM) and hidden-order (HO) phases, where photoemission provides direct and strong evidence for: (i) f–d hybridization, (ii) presence of hybridization gap, (iii) details of the massive reconstruction of FS upon transition and (iv) a non-integer valence likely close to 2.6. While most of the FS reconstruction details have been mapped and are now known, the most recent high resolution and low temperature ARPES studies reveal novel electronic structure features related to HO. No single ARPES experiment so far captures all of the phases appearing in this system as temperature is lowered.

Acknowledgements

This work was supported by the Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division and LANL LDRD programs.

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