STRONGLY CORRELATED ELECTRONS ON FRUSTRATED LATTICES

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FULDE P.; POLLMANN F.; RUNGE E.

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ISSN: 2588-4824

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Paper Information

Journal: Iranian Journal of Physics Research Year:2008 | Volume:8 | Issue:2 Page(s): 13-24

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Title

STRONGLY CORRELATED ELECTRONS ON FRUSTRATED LATTICES

Author(s)

FULDE P. | POLLMANN F. | RUNGE E. | Issue Writer Certificate

Keywords

FRACTIONAL CHARGESQ3

STRINGSQ2

FRUSTRATIONQ3

FERROMAGNETISMQ2

Abstract

We give an overview of recent work on charge degrees of freedom of strongly correlated electrons on geometrically frustrated lattices. Special attention is paid to the checkerboard lattice, i.e., the two-dimensional version of a pyrochlore lattice and to the kagomé lattice. For the checkerboard lattice it is shown that at half filling when spin degrees of freedom are neglected and at quarter filling when they are included excitations with FRACTIONAL CHARGES ±e/2 may exist. The same holds true for the three-dimensional pyrochlore lattice. In the former case the FRACTIONAL CHARGES are confined. The origin of the weak, constant confining force is discussed and some similarities to quarks and to string theory are pointed out. For the checkerboard lattice a formulation in terms of a compact U(1) gauge theory is described. Furthermore a new kinetic mechanism for FERROMAGNETISM at special fillings of a kagomé lattice is discussed.

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APA: Copy

FULDE, P., POLLMANN, F., & RUNGE, E.. (2008). STRONGLY CORRELATED ELECTRONS ON FRUSTRATED LATTICES. IRANIAN JOURNAL OF PHYSICS RESEARCH, 8(2), 13-24. SID. https://sid.ir/paper/1908/en

Vancouver: Copy

FULDE P., POLLMANN F., RUNGE E.. STRONGLY CORRELATED ELECTRONS ON FRUSTRATED LATTICES. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2008;8(2):13-24. Available from: https://sid.ir/paper/1908/en

IEEE: Copy

P. FULDE, F. POLLMANN, and E. RUNGE, “STRONGLY CORRELATED ELECTRONS ON FRUSTRATED LATTICES,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 8, no. 2, pp. 13–24, 2008, [Online]. Available: https://sid.ir/paper/1908/en

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