CHALOUPKA, Jiří and Giniyat KHALIULLIN. Doping-Induced Ferromagnetism and Possible Triplet Pairing in d(4) Mott Insulators. Physical Review Letters, College PK: The American Physical Society, 2016, vol. 116, No 1, p. nestránkováno. ISSN 0031-9007. doi:10.1103/PhysRevLett.116.017203.
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Basic information
Original name Doping-Induced Ferromagnetism and Possible Triplet Pairing in d(4) Mott Insulators
Name in Czech Feromagnetismus vyvolaný dopováním a možné tripletní párování v d4 Mottově izolantu
Authors CHALOUPKA, Jiří (203 Czech Republic, guarantor, belonging to the institution) and Giniyat KHALIULLIN (643 Russian Federation).
Edition Physical Review Letters, College PK, The American Physical Society, 2016, 0031-9007.
Other information
Original language English
Type of outcome article in a journal
Field of Study 10302 Condensed matter physics
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 8.462
RIV identification code RIV/00216224:14740/16:00087778
Organization unit Central European Institute of Technology
Doi http://dx.doi.org/10.1103/PhysRevLett.116.017203
UT WoS 000367784300017
Keywords (in Czech) spinové modely; magnetismus; ruthenáty
Keywords in English spin models; magnetism; ruthenates
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Eva Špillingová, učo 110713. Changed: 17/3/2017 13:49.
Abstract
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.
Links
ED1.1.00/02.0068, research and development projectName: CEITEC - central european institute of technology
GJ15-14523Y, research and development projectName: Mikroskopické modely magnetismu supravodivých pniktidů železa a vrstevnatých oxidů iridia
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