Abstract
The unusual temperature dependence of the resistivity and its in-plane anisotropy observed in the Fe-based superconducting materials, particularly Ba(Fe1-xCox)2As2, has been a long-standing puzzle. Here, we consider the effect of impurity scattering on the temperature dependence of the average resistivity within a simple two-band model of a dirty spin density wave metal. The sharp drop in resistivity below the Néel temperature TN in the parent compound can only be understood in terms of a Lifshitz transition following Fermi surface reconstruction upon magnetic ordering. We show that the observed resistivity anisotropy in this phase, arising from nematic defect structures, is affected by the Lifshitz transition as well.
| Original language | English |
|---|---|
| Article number | 097003 |
| Journal | Physical Review Letters |
| Volume | 114 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Mar 4 2015 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Effects of Lifshitz transition on charge transport in magnetic phases of Fe-based superconductors. / Wang, Y.; Gastiasoro, Maria N.; Andersen, Brian M.; Tomić, M.; Jeschke, Harald Olaf; Valentí, Roser; Paul, Indranil; Hirschfeld, P. J.
In: Physical Review Letters, Vol. 114, No. 9, 097003, 04.03.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of Lifshitz transition on charge transport in magnetic phases of Fe-based superconductors
AU - Wang, Y.
AU - Gastiasoro, Maria N.
AU - Andersen, Brian M.
AU - Tomić, M.
AU - Jeschke, Harald Olaf
AU - Valentí, Roser
AU - Paul, Indranil
AU - Hirschfeld, P. J.
PY - 2015/3/4
Y1 - 2015/3/4
N2 - The unusual temperature dependence of the resistivity and its in-plane anisotropy observed in the Fe-based superconducting materials, particularly Ba(Fe1-xCox)2As2, has been a long-standing puzzle. Here, we consider the effect of impurity scattering on the temperature dependence of the average resistivity within a simple two-band model of a dirty spin density wave metal. The sharp drop in resistivity below the Néel temperature TN in the parent compound can only be understood in terms of a Lifshitz transition following Fermi surface reconstruction upon magnetic ordering. We show that the observed resistivity anisotropy in this phase, arising from nematic defect structures, is affected by the Lifshitz transition as well.
AB - The unusual temperature dependence of the resistivity and its in-plane anisotropy observed in the Fe-based superconducting materials, particularly Ba(Fe1-xCox)2As2, has been a long-standing puzzle. Here, we consider the effect of impurity scattering on the temperature dependence of the average resistivity within a simple two-band model of a dirty spin density wave metal. The sharp drop in resistivity below the Néel temperature TN in the parent compound can only be understood in terms of a Lifshitz transition following Fermi surface reconstruction upon magnetic ordering. We show that the observed resistivity anisotropy in this phase, arising from nematic defect structures, is affected by the Lifshitz transition as well.
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U2 - 10.1103/PhysRevLett.114.097003
DO - 10.1103/PhysRevLett.114.097003
M3 - Article
VL - 114
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 9
M1 - 097003
ER -