SUM(2)×UC(1) gauge symmetry in high-Tc superconductivity

Wei-Min Zhang

SU_M(2)×U_C(1) gauge symmetry in high-T_c superconductivity

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The square lattice structure of CuO₂ layers and the strongly correlated property of electrons indicate that the high-T_c superconductivity in cuprates can be described by an intrinsic SO_M(5) coherent pairing theory in which a SU_M(2)×U_C(1) gauge symmetry is embedded. Besides the usual charge order, this SU_M(2)×U_C(1) gauge symmetry is also related to three new magnetic- charge orders-the local AF magnet, the local spin current, and the d-wave charge order. These magnetic-charge orders are completely determined by the SO_M(5) coherent pairing state. The magnetic and charge fluctuations that characterize the low-energy excitations in cuprates are then described by this gauge symmetry. Thus, the coexistence of antiferromagnetism and superconductivity can be realized naturally in a unified framework.

Original language	English
Article number	104513
Pages (from-to)	1045131-1045136
Number of pages	6
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	10
Publication status	Published - 2002 Mar 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "The square lattice structure of CuO2 layers and the strongly correlated property of electrons indicate that the high-Tc superconductivity in cuprates can be described by an intrinsic SOM(5) coherent pairing theory in which a SUM(2)×UC(1) gauge symmetry is embedded. Besides the usual charge order, this SUM(2)×UC(1) gauge symmetry is also related to three new magnetic- charge orders-the local AF magnet, the local spin current, and the d-wave charge order. These magnetic-charge orders are completely determined by the SOM(5) coherent pairing state. The magnetic and charge fluctuations that characterize the low-energy excitations in cuprates are then described by this gauge symmetry. Thus, the coexistence of antiferromagnetism and superconductivity can be realized naturally in a unified framework.",

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AB - The square lattice structure of CuO2 layers and the strongly correlated property of electrons indicate that the high-Tc superconductivity in cuprates can be described by an intrinsic SOM(5) coherent pairing theory in which a SUM(2)×UC(1) gauge symmetry is embedded. Besides the usual charge order, this SUM(2)×UC(1) gauge symmetry is also related to three new magnetic- charge orders-the local AF magnet, the local spin current, and the d-wave charge order. These magnetic-charge orders are completely determined by the SOM(5) coherent pairing state. The magnetic and charge fluctuations that characterize the low-energy excitations in cuprates are then described by this gauge symmetry. Thus, the coexistence of antiferromagnetism and superconductivity can be realized naturally in a unified framework.

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