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Title: ARPES studies of the electronic structure of LaOFe(P,As)

Abstract

We report a comparison study of LaOFeP and LaOFeAs, two parent compounds of recently discovered iron-pnictide superconductors, using angle-resolved photoemission spectroscopy. Both systems exhibit some common features that are very different from well-studied cuprates. In addition, important differences have also been observed between these two ferrooxypnictides. For LaOFeP, quantitative agreement can be found between our photoemission data and the LDA band structure calculations, suggesting that a weak coupling approach based on an itinerant ground state may be more appropriate for understanding this new superconducting compound. In contrast, the agreement between LDA calculations and experiments in LaOFeAs is relatively poor, as highlighted by the unexpected Fermi surface topology around ({pi},{pi}). Further investigations are required for a comprehensive understanding of the electronic structure of LaOFeAs and related compounds.

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
981378
Report Number(s):
SLAC-PUB-14039
TRN: US201012%%905
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Submitted to Physica C
Additional Journal Information:
Journal Name: Submitted to Physica C
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; IRON ARSENIDES; IRON PHOSPHIDES; LANTHANUM OXIDES; ELECTRONIC STRUCTURE; FERMI LEVEL; GROUND STATES; PHOTOEMISSION; EMISSION SPECTROSCOPY; SUPERCONDUCTORS; MATSCI

Citation Formats

Analytis, J G. ARPES studies of the electronic structure of LaOFe(P,As). United States: N. p., 2010. Web.
Analytis, J G. ARPES studies of the electronic structure of LaOFe(P,As). United States.
Analytis, J G. 2010. "ARPES studies of the electronic structure of LaOFe(P,As)". United States. https://www.osti.gov/servlets/purl/981378.
@article{osti_981378,
title = {ARPES studies of the electronic structure of LaOFe(P,As)},
author = {Analytis, J G},
abstractNote = {We report a comparison study of LaOFeP and LaOFeAs, two parent compounds of recently discovered iron-pnictide superconductors, using angle-resolved photoemission spectroscopy. Both systems exhibit some common features that are very different from well-studied cuprates. In addition, important differences have also been observed between these two ferrooxypnictides. For LaOFeP, quantitative agreement can be found between our photoemission data and the LDA band structure calculations, suggesting that a weak coupling approach based on an itinerant ground state may be more appropriate for understanding this new superconducting compound. In contrast, the agreement between LDA calculations and experiments in LaOFeAs is relatively poor, as highlighted by the unexpected Fermi surface topology around ({pi},{pi}). Further investigations are required for a comprehensive understanding of the electronic structure of LaOFeAs and related compounds.},
doi = {},
url = {https://www.osti.gov/biblio/981378}, journal = {Submitted to Physica C},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 02 00:00:00 EDT 2010},
month = {Wed Jun 02 00:00:00 EDT 2010}
}