File Download
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1103/PhysRevB.100.045103
- Scopus: eid_2-s2.0-85070197308
- WOS: WOS:000474369000007
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Spin-orbital entanglement in d8 Mott insulators: Possible excitonic magnetism in diamond lattice antiferromagnets
Title | Spin-orbital entanglement in d8 Mott insulators: Possible excitonic magnetism in diamond lattice antiferromagnets |
---|---|
Authors | |
Keywords | Antiferromagnetic materials Crystal lattices Diamonds Magnetic field effects Nickel compounds |
Issue Date | 2019 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prb/ |
Citation | Physical Review B: covering condensed matter and materials physics, 2019, v. 100 n. 4, p. article no. 045103:1-9 How to Cite? |
Abstract | Motivated by the recent activities on the diamond lattice antiferromagnet NiRh2O4 with Ni2+3d8 local moments, we theoretically explore on general grounds the unique spin and orbital physics for the diamond lattice antiferromagnet with 3d8 local moments. The superexchange interaction between the local moments usually favors magnetic orders. Due to the particular electron configuration of the 3d8 ion with a partially filled upper t2g level and a fully filled lower eg level, the atomic spin-orbit coupling becomes active at the linear order and would favor a spin-orbital-entangled singlet with quenched local moments in the single-ion limit. Thus, the spin-orbital entanglement competes with the superexchange and could drive the system to a quantum critical point that separates the spin-orbital singlet and the magnetic order. We further explore the effects of magnetic field and uniaxial pressure. The nontrivial response to the magnetic field is intimately tied to the underlying spin-orbital structure of the local moments. We discuss future experiments such as doping and pressure and point out the correspondence between different electron configurations. © 2019 American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/272942 |
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 1.345 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, FY | - |
dc.contributor.author | Chen, G | - |
dc.date.accessioned | 2019-08-06T09:19:31Z | - |
dc.date.available | 2019-08-06T09:19:31Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Physical Review B: covering condensed matter and materials physics, 2019, v. 100 n. 4, p. article no. 045103:1-9 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | http://hdl.handle.net/10722/272942 | - |
dc.description.abstract | Motivated by the recent activities on the diamond lattice antiferromagnet NiRh2O4 with Ni2+3d8 local moments, we theoretically explore on general grounds the unique spin and orbital physics for the diamond lattice antiferromagnet with 3d8 local moments. The superexchange interaction between the local moments usually favors magnetic orders. Due to the particular electron configuration of the 3d8 ion with a partially filled upper t2g level and a fully filled lower eg level, the atomic spin-orbit coupling becomes active at the linear order and would favor a spin-orbital-entangled singlet with quenched local moments in the single-ion limit. Thus, the spin-orbital entanglement competes with the superexchange and could drive the system to a quantum critical point that separates the spin-orbital singlet and the magnetic order. We further explore the effects of magnetic field and uniaxial pressure. The nontrivial response to the magnetic field is intimately tied to the underlying spin-orbital structure of the local moments. We discuss future experiments such as doping and pressure and point out the correspondence between different electron configurations. © 2019 American Physical Society. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prb/ | - |
dc.relation.ispartof | Physical Review B: covering condensed matter and materials physics | - |
dc.rights | Physical Review B: covering condensed matter and materials physics. Copyright © American Physical Society. | - |
dc.rights | Copyright [2019] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevB.100.045103]. | - |
dc.subject | Antiferromagnetic materials | - |
dc.subject | Crystal lattices | - |
dc.subject | Diamonds | - |
dc.subject | Magnetic field effects | - |
dc.subject | Nickel compounds | - |
dc.title | Spin-orbital entanglement in d8 Mott insulators: Possible excitonic magnetism in diamond lattice antiferromagnets | - |
dc.type | Article | - |
dc.identifier.email | Li, FY: lifeiye@hku.hk | - |
dc.identifier.email | Chen, G: gangchen@hku.hk | - |
dc.identifier.authority | Chen, G=rp02491 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevB.100.045103 | - |
dc.identifier.scopus | eid_2-s2.0-85070197308 | - |
dc.identifier.hkuros | 299817 | - |
dc.identifier.volume | 100 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | article no. 045103:1 | - |
dc.identifier.epage | 9 | - |
dc.identifier.isi | WOS:000474369000007 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2469-9950 | - |