Dichotomy between Large Local and Small Ordered Magnetic Moments in Iron-Based Superconductors

Hansmann P, Arita R, Toschi A, Sakai S, Sangiovanni G, Held K (2010)

Publication Type: Journal article

Publication year: 2010

Journal

Physical Review Letters American Physical Society

Book Volume: 104

Journal Issue: 19

DOI: 10.1103/PhysRevLett.104.197002

Abstract

We study a four-band model for iron-based superconductors within the local density approximation combined with dynamical mean-field theory (LDA + DMFT). This successfully reproduces the results of models which take As p degrees of freedom explicitly into account and has several physical advantages over the standard five d-band model. Our findings reveal that the new superconductors are more strongly correlated than their single-particle properties suggest. Two-particle correlation functions unveil the dichotomy between local and ordered magnetic moments in these systems, calling for further experiments to better resolve the short time scale spin dynamics.

Authors with CRIS profile

Philipp Hansmann Professur für Theoretische Physik mit dem Schwerpunkt Molekulare Materialien

Involved external institutions

Technische Universität Wien / Vienna University of Technology AT Austria (AT) University of Tokyo JP Japan (JP)

How to cite

APA:

Hansmann, P., Arita, R., Toschi, A., Sakai, S., Sangiovanni, G., & Held, K. (2010). Dichotomy between Large Local and Small Ordered Magnetic Moments in Iron-Based Superconductors. Physical Review Letters, 104(19). https://doi.org/10.1103/PhysRevLett.104.197002

MLA:

Hansmann, Philipp, et al. "Dichotomy between Large Local and Small Ordered Magnetic Moments in Iron-Based Superconductors." Physical Review Letters 104.19 (2010).

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