Doping-Induced Ferromagnetism and Possible Triplet Pairing in d(4) Mott Insulators

Physical Review Letters
Jiří Chaloupka, G Khaliullin

Abstract

We study the effects of electron doping in Mott insulators containing d(4) ions such as Ru(4+), Os(4+), Rh(5+), and Ir(5+) 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 t(2g)(4). 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.

References

Aug 11, 2001·Physical Review Letters·T MizokawaY Maeno
Sep 28, 2002·Science·P KhalifahR J Cava
Mar 14, 2003·Physical Review Letters·Andrey V ChubukovDirk K Morr
Apr 20, 2004·Physical Review Letters·Andrey V ChubukovJerome Rech
Aug 16, 2006·Physical Review Letters·Hua WuL H Tjeng
Apr 7, 2010·Physical Review Letters·Andrey V Chubukov, Dmitrii L Maslov
Aug 30, 2013·Scientific Reports·Fumihiko NakamuraYoshiteru Maeno
Oct 5, 2013·Journal of the American Chemical Society·Youguo ShiKazunari Yamaura
Nov 26, 2013·Physical Review Letters·Giniyat Khaliullin
Mar 4, 2014·Physical Review Letters·G CaoR K Kaul

❮ Previous
Next ❯

Citations

Jun 28, 2017·Chemistry : a European Journal·Kasper S PedersenRodolphe Clérac
Feb 28, 2020·Scientific Reports·Hiroyoshi NobukaneSatoshi Tanda
Jul 9, 2016·Physical Review Letters·J Kuneš, D Geffroy
Mar 11, 2017·Physical Review Letters·Aaram J KimRoser Valentí
May 21, 2019·Physical Review Letters·Pavel S AnisimovMaria Daghofer

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.