Specific heat anomaly in the d-density wave state and emergence of incommensurate orbital antiferromagnetic order

Abstract

We study the effect of finite chemical potential on the d-density wave state that has been proposed to explain the pseudogap phenomena in underdoped cuprates. We find that the specific heat anomaly at the transition temperature, below which the d-density wave state forms, gets weaker when finite chemical potential is introduced. This provides a useful ground for the proper interpretation of the specific heat measurement in regard to the existence of the d-density wave state below the pseudogap temperature. Further increase of the chemical potential leads to an incommensurate orbital antiferromagnetic state before the system eventually turns into the normal state. This is an inhomogeneous state characterized by novel charge ordering and an analog of the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state in superconductivity.

4 pages, 2 figures

References in corpus (2)

• Observation of Magnetic Moments in the Superconducting State of YBa${}_2$Cu${}_3$O${}_{6.6}$
• Neutron Scattering Signature of d-density Wave Order in the Cuprates

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• Theory of d-density wave viewed from a vertex model and its implications
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• Staggered flux state of electron in two-dimensional t-J model
• Thermodynamic properties of the d-density wave order in cuprates
• Modulation of the local density of states within the $d$-density wave theory in the underdoped cuprates
• Orbital currents and charge density waves in a generalized Hubbard ladder
• Infrared Hall angle in the $d$-density wave state: a comparison of theory and experiment
• Linear response theory around a localized impurity in the pseudogap regime of an anisotropic superconductor: precursor pairing vs the d-density-wave scenario
• Effect of Ring Exchange on Orbital Antiferromagnet
• Nontrivial behavior of the Fermi arc in the staggered-flux ordered phase