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@article{1331273,
author = {Chaloupka, Jiří and Khaliullin, Giniyat},
article_location = {College PK},
article_number = {1},
doi = {http://dx.doi.org/10.1103/PhysRevLett.116.017203},
keywords = {spin models; magnetism; ruthenates},
language = {eng},
issn = {0031-9007},
journal = {Physical Review Letters},
title = {Doping-Induced Ferromagnetism and Possible Triplet Pairing in d(4) Mott Insulators},
url = {http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.017203},
volume = {116},
year = {2016}
}
TY - JOUR
ID - 1331273
AU - Chaloupka, Jiří - Khaliullin, Giniyat
PY - 2016
TI - Doping-Induced Ferromagnetism and Possible Triplet Pairing in d(4) Mott Insulators
JF - Physical Review Letters
VL - 116
IS - 1
SP - nestránkováno
EP - nestránkováno
PB - The American Physical Society
SN - 00319007
KW - spin models
KW - magnetism
KW - ruthenates
UR - http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.017203
L2 - http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.017203
N2 - We study the effects of electron doping in Mott insulators containing 4d ions such as Ru4+, Os4+, Rh5+, and Ir5+ with J=0 singlet ground state. Depending on the strength of the spin-orbit coupling, the undoped systems are either nonmagnetic or host an unusual, excitonic magnetism arising from a condensation of the excited J=1 triplet states of t2g4. We find that the interaction between J excitons and doped carriers strongly supports ferromagnetism, converting both the nonmagnetic and antiferromagnetic phases of the parent insulator into a ferromagnetic metal, and further to a nonmagnetic metal. Close to the ferromagnetic phase, the low-energy spin response is dominated by intense paramagnon excitations that may act as mediators of a triplet pairing.
ER -
CHALOUPKA, Jiří a Giniyat KHALIULLIN. Doping-Induced Ferromagnetism and Possible Triplet Pairing in d(4) Mott Insulators. \textit{Physical Review Letters}. College PK: The American Physical Society, 2016, roč.~116, č.~1, s.~nestránkováno, 5 s. ISSN~0031-9007. Dostupné z: https://dx.doi.org/10.1103/PhysRevLett.116.017203.
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