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TT: Fachverband Tiefe Temperaturen

TT 45: Correlated Electrons: Poster Session

TT 45.4: Poster

Donnerstag, 29. März 2012, 15:00–19:00, Poster B

The hidden order transition in URu₂Si₂ investigated by high-resolution angle-resolved photoemission spectroscopy — •Jan Trinckauf¹, Daniel Shai², John Harter², Torben Hänke¹, Graeme Luke³, Kyle Shen², and Jochen Geck¹ — ¹IFW Dresden, Germany — ²Cornell University, Ithaca, USA — ³McMaster Univerity, Hamilton, Canada

We present a study of the hidden order transition in URu₂Si₂ by means of high-resolution angle-resolved photoemission spectroscopy (ARPES). In particular, we find a strong excitation energy dependence of a flat quasi particle band that is associated with and strongly affected by the hidden order transition[1,2]. We compare our ARPES data to density functional theory (DFT) calculations in the local density approximation (LDA)+U to simulate various degrees of 5f localization.
Santander-Syrio et al., Nat. Phys. 2009
Yoshida et al., Phys. Rev. B 2010