Topological phases due to the coexistence of superconductivity and spin-density wave: Application to high Tc superconductors in the underdoped regime

Abstract

We consider the coexistence of superconductivity(SC) and spin-density wave(SDW). The SC is presumed to be of $d_{x^2-y^2}+i{d}_{xy}(d_1+i{d}_2)$ type whereas the SDW order parameter is of $BCS$/$d_{xy}$ symmetry. The Hamiltonian having such a structure is shown to have topological coexistence phases in addition to the conventional one. It is shown that the amplitudes of both the order parameters determine the nature of topological phases. A phase diagram characterizing different topological phases with their Chern numbers are obtained. The experimental realization of such topological phases with reference to high temperature superconductors in the extreme underdoped regime are discussed.

5 pages text, 4 figures

References in corpus (5)

• Classification of topological insulators and superconductors in three spatial dimensions
• The Quantum Spin Hall Effect: Theory and Experiment
• Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212
• Phase competition in trisected superconducting dome
• Evolution from a nodeless gap to d(x2-y2) form in underdoped La(2-x)SrxCuO4

Cited by in corpus (4)

• Thermoelectric transport in the topological phase due to the coexistence of superconductivity and spin-density-wave
• The nontrivial ground state topology in the coexistence phase of chiral d-wave superconductivity and 120 degrees magnetic order on a triangular lattice
• Superfluid density in the slave-boson theory
• Topological phase in a $d_{x^2-y^2}+(p+ip)$ superconductor in presence of spin-density-wave