Thermopower as sensitive probe of electronic nematicity in iron pnictides

Abstract

We study the in-plane anisotropy of the thermoelectric power and electrical resistivity on detwinned single crystals of isovalent substituted EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$. Compared to the resistivity anisotropy the thermopower anisotropy is more pronounced and clearly visible already at temperatures much above the structural and magnetic phase transitions. Most remarkably, the thermopower anisotropy changes sign below the structural transition. This is associated with the interplay of two contributions due to anisotropic scattering and orbital polarization, which dominate at high- and low-temperatures, respectively.

arXiv comment8 pages, including supplemental Material

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Cited by in corpus (35)

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• Charge Nematicity and Electronic Raman Scattering in Iron-based Superconductors
• Electronic nematic susceptibility of iron-based superconductors
• Ultrafast observation of critical nematic fluctuations and giant magnetoelastic coupling in iron pnictides
• Elastic coupling and spin-driven nematicity in iron-based superconductors
• Emergence of Orbital Nematicity in the Tetragonal Phase of BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Dichotomy between in-plane magnetic susceptibility and resistivity anisotropies in extremely strained $BaF{e}_{2}A{s}_2$
• Persistent detwinning of iron pnictides by small magnetic fields
• Thermoelectric properties of iron-based superconductors and parent compounds
• Hydrostatic and uniaxial pressure tuning of iron-based superconductors: Insights into superconductivity, magnetism, nematicity and collapsed tetragonal transitions
• Neutron-scattering measurements of the spin excitations in LaFeAsO and Ba(Fe${}_{0.953}$Co${}_{0.047}$)${}_2$As${}_2$: Evidence for a sharp enhancement of spin fluctuations by nematic order
• Spin-orbital interplay and topology in the nematic phase of iron pnictides
• Signatures of quantum criticality in the thermopower of Ba(Fe(1-x)Co(x))2As2
• Manifestation of nematic degrees of freedom in the Raman response function of iron pnictides
• Thermoelectric anisotropy in Ba(Fe1-xCox)2As2 iron-based superconductor
• Local nematic susceptibility in stressed BaFe${}_2$As${}_2$ from NMR electric field gradient measurements
• Disordered Fe vacancies and superconductivity in potassium-intercalated iron selenide (K2-xFe4+ySe5)
• Microscopic theory of magnetic detwinning in iron-based superconductors with large-spin rare earths
• Electronic Nematicity Revealed by Torque Magnetometry in Iron Arsenide EuFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$
• Anisotropy of the Seebeck and Nernst coefficients in parent compounds of the iron-based superconductors
• Raman scattering study of spin-density-wave-induced anisotropic electronic properties in AFe2As2 (A=Ca,Eu)
• Electronic Phase Diagram of SrFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$: Effect of Structural Dimensionality
• In-plane anisotropy of transport coefficients in the electronic nematic states: Universal origin of the nematicity in Fe-based superconductors
• Orbital Nematic Order and Interplay with Magnetism in the Two-Orbital Hubbard Model
• Strain-derivative of thermoelectric properties: a sensitive probe for nematicity
• Electronic Scattering Effects in Europium-Based Iron Pnictides
• Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(Fe${}_{1-x}$Ru${}_x$)${}_2$As${}_2$
• Magneto-elastic coupling in Fe-based superconductors
• Possible coexistence of double-Q magnetic order and chequerboard charge order in the re-entrant tetragonal phase of Ba0.76K0.24Fe2As2
• Combined resistivity and Hall effect study on NaFe${}_{1-x}$Rh${}_x$As single crystals
• The interactions between antiferromagnetism, tetrahedral sites and electron-phonon coupling in FeSe1-xTex and FeSe/SrTiO3
• Apparatus Design for Measuring of the Strain Dependence of the Seebeck Coefficient of Single Crystals
• Ubiquity of rotational symmetry breaking in superconducting films, from Fe(Te,Se)/Bi${}_2$Te${}_3$ to Nb, and the effect of measurement geometry
• Measurements of nematic susceptibility with phase sensitive nuclear magnetic resonance in pulsed strain fields
• The thermoelectric conversion efficiency problem: Insights from the electron gas thermodynamics close to a phase transition