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| Hauptseite > Institutssammlungen > JSC > Optical conductivity, Fermi surface, and spin-orbit coupling effects in Sr 2 RhO 4 > print |
| Hauptseite > Institutssammlungen > JSC > Optical conductivity, Fermi surface, and spin-orbit coupling effects in Sr 2 RhO 4 > print |
| 001 | 885420 | ||
| 005 | 20230426083222.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevB.99.125102 |2 doi |
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| 100 | 1 | _ | |a Zhang, Guoren |0 P:(DE-Juel1)144464 |b 0 |
| 245 | _ | _ | |a Optical conductivity, Fermi surface, and spin-orbit coupling effects in Sr 2 RhO 4 |
| 260 | _ | _ | |a Woodbury, NY |c 2019 |b Inst. |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a By using the local-density approximation + dynamical mean-field theory approach, we study the low-energy electronic properties of $Sr_2RhO_4$ in a realistic setting, and compare to $Sr_2RuO_4$. We investigate the interplay of spin-orbit coupling, crystal field, and Coulomb interaction, including the tetragonal terms of the Coulomb tensor. We find that (i) differently than in $Sr_2RuO_4$, the zero-frequency effective crystal-field “enhancement” due to Coulomb repulsion, ΔɛCF(ω=0), is small and, depending on the parameters, even negative. (ii) In addition, the effects of (realistic) anisotropic Coulomb terms are weak. (iii) Instead, the effective zero-frequency enhancement of the spin-orbit interaction doubles the value of the corresponding local-density approximation couplings. This explains the experimental Fermi surface and supports a previous proposal based on static mean-field calculations. We find that the sign of the Coulomb-induced spin-orbit anisotropy is influenced by the octahedral rotation. Based on these conclusions, we examine recent optical conductivity experiments. (iv) We show that the spin-orbit interaction is key for understanding them; differently than in $Sr_2RuO_4$, the $t_{2g}$ intraorbital contributions are small; thus, the single-band picture does not apply. |
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| 536 | _ | _ | |a Spin-orbital order-disorder transitions in strongly correlated systems (jiff46_20161101) |0 G:(DE-Juel1)jiff46_20161101 |c jiff46_20161101 |f Spin-orbital order-disorder transitions in strongly correlated systems |x 1 |
| 542 | _ | _ | |i 2019-03-04 |2 Crossref |u https://link.aps.org/licenses/aps-default-license |
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| 773 | _ | _ | |a 10.1103/PhysRevB.99.125102 |g Vol. 99, no. 12, p. 125102 |0 PERI:(DE-600)2844160-6 |n 12 |p 125102 |t Physical review / B |v 99 |y 2019 |x 2469-9950 |
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