Electromagnetic Response of Static and Fluctuating Stripes in Cuprate Superconductors

Dumm, M.; Basov, D. N.; Komiya, Seiki; Abe, Yasushi; Ando, Yoichi

doi:10.1103/physrevlett.88.147003

Cited by 80 publications

(96 citation statements)

References 49 publications

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“…1). This feature in reflectance spectra of the peak+dip case looks similar that of electron underdoped cuprates and hole doped cuprates [7,5,34,32,6,8] (see also Fig. 5 for closer comparisons).…”

Section: Optical Conductivity and Reflectance Spectra Calculated Fromsupporting

confidence: 71%

Simulation of a hump structure in the optical scattering rate within a generalized Allen formalism and its application to copper oxide systems

Hwang¹

2013

J. Phys.: Condens. Matter

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Abstract. We propose a possible way to simulate a hump structure in the optical scattering rate. The optical scattering rate of correlated charge carriers can be defined within an extended Drude model formalism. When some electron and hole doped copper oxide systems are in the spin density or charge density wave phases they show hump structures in their optical scattering rates. The hump structures have not yet been simulated and understood clearly. We are able to simulate the hump structure by using a peak followed by a dip feature in the normalized density of states within a generalized Allen formalism. We observe that reversing the order of the dip and peak gives completely different features in the optical scattering rate; a peak-dip (dip peak) results in a hump (a valley) in the scattering rate. We also obtain the real part of the optical conductivity and reflectance spectra from the simulated optical scattering rate and compare them with published experimental spectra. From these comparisons we conclude that the peak-dip order can give the hump structure, which is observed experimentally in copper oxide systems. Finally we fit two published optical spectra with our new model and discuss our results and the possible origin of the dip or peak features in the normalized density of states.

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Section: Optical Conductivity and Reflectance Spectra Calculated Fromsupporting

confidence: 71%

Simulation of a hump structure in the optical scattering rate within a generalized Allen formalism and its application to copper oxide systems

Hwang¹

2013

J. Phys.: Condens. Matter

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“…9]. We show that we can trace back the metallicity of Γ 0,B1g (T ) to an extra contribution specific to LSCO as suggested by Dumm et al 50 and Venturini et al…”

Section: Electron-hole Excitations In the Limit ω →mentioning

confidence: 61%

Electron interactions and charge ordering in CuO 2 compounds

Muschler

Prestel

Tassini

et al. 2010

Eur. Phys. J. Spec. Top.

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We present results of inelastic light scattering experiments on singlecrystalline La2−xSrxCuO4 in the doping range 0.00 ≤ x = p ≤ 0.30 and Tl2Ba2CuO 6+δ at p = 0.20 and p = 0.24. The main emphasis is placed on the response of electronic excitations in the antiferromagnetic phase, in the pseudogap range, in the superconducting state, and in the essentially normal metallic state at x ≥ 0.26, where no superconductivity could be observed. In most of the cases we compare B1g and B2g spectra which project out electronic properties close to (π, 0) and (π/2, π/2), respectively. In the channel of electron-hole excitations we find universal behavior in B2g symmetry as long as the material exhibits superconductivity at low temperature. In contrast, there is a strong doping dependence in B1g symmetry: (i) In the doping range 0.20 ≤ p ≤ 0.25 we observe rapid changes of shape and temperature dependence of the spectra. (ii) In La2−xSrxCuO4 new structures appear for x < 0.13 which are superposed on the electron-hole continuum. The temperature dependence as well as model calculations support an interpretation in terms of charge-ordering fluctuations. For x ≤ 0.05 the response from fluctuations disappears at B1g and appears at B2g symmetry in full agreement with the orientation change of stripes found by neutron scattering. While, with a grain of salt, the particle-hole continuum is universal for all cuprates the response from fluctuating charge order in the range 0.05 ≤ p < 0.16 is so far found only in La2−xSrxCuO4. We conclude that La2−xSrxCuO4 is close to static charge order and, for this reason, may have a suppressed Tc.

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“…Instead we attribute this behavior to a band-like response even in lightly doped samples that is modified by weak localization. 18,19,20,21 It is instructive to discuss the evolution of the conductivity spectra both with temperature and doping in the context of the phase diagram of YBCO system. The pseudogap boundary at T * is associated with the formation of the partial (incomplete) gap in the spectrum of the low-energy excitations.…”

Section: Doping Trends In the Optical Conductivitymentioning

confidence: 99%

Electrodynamics of the nodal metal state in weakly doped high-Tccuprates

et al. 2005

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We report on the detailed analysis of the infrared (IR) conductivity of two prototypical high-Tc systems YBa2Cu3Oy and La2−xSrxCuO4 throughout the complex phase diagram of these compounds. Our focus in this work is to thoroughly document the electromagnetic response of the nodal metal state which is initiated with only few holes doped in parent antiferromagnetic systems and extends up to the pseudogap boundary in the phase diagram. The key signature of the nodal metal is the two-component conductivity: the Drude mode at low energies followed by a resonance in mid-IR. The Drude component can be attributed to the response of coherent quasiparticles residing on the Fermi arcs detected in photoemission experiments. The microscopic origin of the mid-IR band is yet to be understood. A combination of transport and IR data uncovers fingerprints of the Fermi liquid behavior in the response of the nodal metal. The comprehensive nature of the data sets presented in this work allows us to critically re-evaluate common approaches to the interpretation of the optical data. Specifically we re-examine the role of magnetic excitations in generating electronic self energy effects through the analysis of the IR data in high magnetic field.

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Electromagnetic Response of Static and Fluctuating Stripes in Cuprate Superconductors

Cited by 80 publications

References 49 publications

Simulation of a hump structure in the optical scattering rate within a generalized Allen formalism and its application to copper oxide systems

Simulation of a hump structure in the optical scattering rate within a generalized Allen formalism and its application to copper oxide systems

Electron interactions and charge ordering in CuO 2 compounds

Electrodynamics of the nodal metal state in weakly doped high-Tccuprates

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