Pseudogap behavior of RuP probed by photoemission spectroscopy

Autor:	Sato, K., Ootsuki, D., Wakisaka, Y., Saini, N. L., Mizokawa, T., Arita, M., Anzai, H., Namatame, H., Taniguchi, M., Hirai, D., Takagi, H.
Rok vydání:	2012
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Superconductivity
Druh dokumentu:	Working Paper
Popis:	We have studied the electronic structure of RuP and related Ru pnictides using photoemission spectroscopy. Ru 3d core-level and valence-band spectra of RuP show that the Ru valence is +3 with t_{2g}^5 configuration. The photoemisson spectral weight near the Fermi level is moderately suppressed in the pseudogap phase of RuP, consistent with the pseudogap opening of 2\Delta/k_BT_c ~ 3 (gap size \Delta ~ 50 meV and transition temperature T_c ~ 330 K). The Ru 3d peak remains sharp in the pseudogap phase and the insulating phase of RuP, suggesting that the electronic orderings responsible for the phase transitions are different from the conventional charge density wave. Comment: 4 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1205.2669 Zobrazit plný text záznamu View this record from Arxiv