FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3200491462> ?p ?o ?g. }

• W3200491462 abstract "We investigate the magnetic couplings in ${mathrm{Sr}}_{2}{mathrm{IrO}}_{4}$ in the Mott-insulating picture, combining density-functional theory, dynamical mean-field theory, and many-body perturbation theory. We first determine the form of the ${j}_{mathrm{eff}}=1/2$ pseudospin via the local-density-approximation $+$ dynamical mean-field theory approach. Next we study the magnetic interactions in the strong-to-intermediate coupling regime. To this end, we calculate the superexchange pseudospin tensors ${mathrm{ensuremath{Gamma}}}_{1}, {mathrm{ensuremath{Gamma}}}_{2}$, and ${mathrm{ensuremath{Gamma}}}_{3}$ up to fourth order and analyze their dependence on the screened Coulomb interaction integrals $U$ and $J$. We show that, due to term cancellations, the experimental nearest-neighbor coupling ${mathrm{ensuremath{Gamma}}}_{1}$ is reasonably well reproduced for a whole range of realistic $(U,J)$ values. We show that increasing the Hund's rule coupling $J$ (within the window of realistic values) can lead to large fourth-order contributions, which could explain the ferromagnetic next-nearest-neighbor coupling ${mathrm{ensuremath{Gamma}}}_{2}$ extracted from the spin-wave dispersion. This regime is characterized by a sizable ring exchange $K$. For $(U,J)$ values that yield a Mott insulator with a half-filled ${j}_{mathrm{eff}}=1/2$ state, however, fourth-order terms remain minor even if the gap is small. For no realistic parameters, we find a sizable next-next-nearest-neighbor coupling ${mathrm{ensuremath{Gamma}}}_{3}ensuremath{sim}|{mathrm{ensuremath{Gamma}}}_{2}|$. Possible implications are discussed." @default.
• W3200491462 created "2021-09-27" @default.
• W3200491462 creator A5016280111 @default.
• W3200491462 creator A5053610847 @default.
• W3200491462 date "2021-09-13" @default.
• W3200491462 modified "2023-10-15" @default.
• W3200491462 title "Magnetic superexchange couplings in Sr2IrO4" @default.
• W3200491462 cites W1503296833 @default.
• W3200491462 cites W1528652845 @default.
• W3200491462 cites W1649915540 @default.
• W3200491462 cites W1672493268 @default.
• W3200491462 cites W1864324646 @default.
• W3200491462 cites W1882267830 @default.
• W3200491462 cites W1918852758 @default.
• W3200491462 cites W1970316105 @default.
• W3200491462 cites W1978511573 @default.
• W3200491462 cites W1980575744 @default.
• W3200491462 cites W1982664426 @default.
• W3200491462 cites W1983329248 @default.
• W3200491462 cites W1984461685 @default.
• W3200491462 cites W1984834576 @default.
• W3200491462 cites W1989683838 @default.
• W3200491462 cites W1989725537 @default.
• W3200491462 cites W1990150358 @default.
• W3200491462 cites W1990907627 @default.
• W3200491462 cites W1994033340 @default.
• W3200491462 cites W2013969154 @default.
• W3200491462 cites W2016438046 @default.
• W3200491462 cites W2028460496 @default.
• W3200491462 cites W2030927504 @default.
• W3200491462 cites W2032944859 @default.
• W3200491462 cites W2036151581 @default.
• W3200491462 cites W2036524141 @default.
• W3200491462 cites W2041051910 @default.
• W3200491462 cites W2043822339 @default.
• W3200491462 cites W2054661952 @default.
• W3200491462 cites W2059746804 @default.
• W3200491462 cites W2064121611 @default.
• W3200491462 cites W2067870031 @default.
• W3200491462 cites W2069131059 @default.
• W3200491462 cites W2076561901 @default.
• W3200491462 cites W2079638751 @default.
• W3200491462 cites W2087722637 @default.
• W3200491462 cites W2088081187 @default.
• W3200491462 cites W2112646032 @default.
• W3200491462 cites W2121624572 @default.
• W3200491462 cites W2142497139 @default.
• W3200491462 cites W2144765598 @default.
• W3200491462 cites W2154878921 @default.
• W3200491462 cites W2162532443 @default.
• W3200491462 cites W2164805481 @default.
• W3200491462 cites W2258451643 @default.
• W3200491462 cites W2316338737 @default.
• W3200491462 cites W2318628188 @default.
• W3200491462 cites W2327741125 @default.
• W3200491462 cites W2330821385 @default.
• W3200491462 cites W2339296791 @default.
• W3200491462 cites W2580768585 @default.
• W3200491462 cites W2590363855 @default.
• W3200491462 cites W2750998823 @default.
• W3200491462 cites W2793927452 @default.
• W3200491462 cites W2809657845 @default.
• W3200491462 cites W2810643466 @default.
• W3200491462 cites W2903846365 @default.
• W3200491462 cites W2920256891 @default.
• W3200491462 cites W2991481038 @default.
• W3200491462 cites W3006346193 @default.
• W3200491462 cites W3027413841 @default.
• W3200491462 cites W3104639376 @default.
• W3200491462 cites W3105041466 @default.
• W3200491462 cites W758607618 @default.
• W3200491462 doi "https://doi.org/10.1103/physrevb.104.125116" @default.
• W3200491462 hasPublicationYear "2021" @default.
• W3200491462 type Work @default.
• W3200491462 sameAs 3200491462 @default.
• W3200491462 citedByCount "1" @default.
• W3200491462 countsByYear W32004914622022 @default.
• W3200491462 crossrefType "journal-article" @default.
• W3200491462 hasAuthorship W3200491462A5016280111 @default.
• W3200491462 hasAuthorship W3200491462A5053610847 @default.
• W3200491462 hasConcept C10138342 @default.
• W3200491462 hasConcept C121332964 @default.
• W3200491462 hasConcept C127413603 @default.
• W3200491462 hasConcept C131584629 @default.
• W3200491462 hasConcept C136766821 @default.
• W3200491462 hasConcept C14179194 @default.
• W3200491462 hasConcept C147120987 @default.
• W3200491462 hasConcept C155355069 @default.
• W3200491462 hasConcept C162324750 @default.
• W3200491462 hasConcept C174256460 @default.
• W3200491462 hasConcept C182306322 @default.
• W3200491462 hasConcept C202213908 @default.
• W3200491462 hasConcept C26873012 @default.
• W3200491462 hasConcept C62520636 @default.
• W3200491462 hasConcept C78519656 @default.
• W3200491462 hasConcept C9342510 @default.
• W3200491462 hasConceptScore W3200491462C10138342 @default.
• W3200491462 hasConceptScore W3200491462C121332964 @default.
• W3200491462 hasConceptScore W3200491462C127413603 @default.
• W3200491462 hasConceptScore W3200491462C131584629 @default.

• next