Search for: All records | NSF Public Access

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

Electronic structure of Co $3 d$ states in the Kitaev material candidate honeycomb cobaltate ${Na}_{3} {Co}_{2} {SbO}_{6}$ probed with x-ray dichroism

https://doi.org/10.1103/PhysRevB.107.214443

van Veenendaal, M.; Poldi, E. H.; Veiga, L. S.; Bencok, P.; Fabbris, G.; Tartaglia, R.; McChesney, J. L.; Freeland, J. W.; Hemley, R. J.; Zheng, H.; et al (June 2023, Physical Review B)
none (Ed.)
The recent prediction that honeycomb lattices of Co2+ (3d7) ions could host dominant Kitaev interactions provides an exciting direction for exploration of new routes to stabilizing Kitaev’s quantum spin liquid in real materials. Na3Co2SbO6 has been singled out as a potential material candidate provided that spin and orbital moments couple into a Jeff = 1/2 ground state, and that the relative strength of trigonal crystal field and spin-orbit coupling acting on Co ions can be tailored. Using x-ray linear dichroism (XLD) and x-ray magnetic circular dichroism (XMCD) experiments, alongside configuration interaction calculations, we confirm the counterintuitive positive sign of the trigonal crystal field acting on Co2+ ions and test the validity of the Jeff = 1/2 description of the electronic ground state. The results lend experimental support to recent theoretical predictions that a compression (elongation) of CoO6 octahedra along (perpendicular to) the trigonal axis would drive this cobaltate toward the Kitaev limit, assuming the Jeff = 1/2 character of the electronic ground state is preserved.
more » « less
Pseudogap suppression by competition with superconductivity in La-based cuprates

https://doi.org/10.1103/PhysRevResearch.4.043015

Küspert, J.; Cohn Wagner, R.; Lin, C.; von Arx, K.; Wang, Q.; Kramer, K.; Pudelko, W. R.; Plumb, N. C.; Matt, C. E.; Fatuzzo, C. G.; et al (October 2022, Physical Review Research)

Full Text Available
Thermopower across the phase diagram of the cuprate ${La}_{1.6 - x} {Nd}_{0.4} {Sr}_{x} {CuO}_{4}$ : Signatures of the pseudogap and charge density wave phases

https://doi.org/10.1103/PhysRevB.103.155102

Collignon, C.; Ataei, A.; Gourgout, A.; Badoux, S.; Lizaire, M.; Legros, A.; Licciardello, S.; Wiedmann, S.; Yan, J.-Q.; Zhou, J.-S.; et al (April 2021, Physical Review B)

Full Text Available
Evidence for charge transfer and proximate magnetism in graphene– $α − {RuCl}_{3}$ heterostructures

https://doi.org/10.1103/PhysRevB.100.165426

Zhou, Boyi; Balgley, J.; Lampen-Kelley, P.; Yan, J.-Q.; Mandrus, D. G.; Henriksen, E. A. (October 2019, Physical Review B)

Full Text Available
Suppression of the antiferromagnetic metallic state in the pressurized $MnB i_{2} T e_{4}$ single crystal

https://doi.org/10.1103/PhysRevMaterials.3.094201

Chen, K. Y.; Wang, B. S.; Yan, J.-Q.; Parker, D. S.; Zhou, J.-S.; Uwatoko, Y.; Cheng, J.-G. (September 2019, Physical Review Materials)

Full Text Available
Electronic phase separation and magnetic-field-induced phenomena in molecular multiferroic $({ND}_{4})_{2} {FeCl}_{5} \cdot D_{2} O$

https://doi.org/10.1103/PhysRevB.98.054407

Tian, W.; Cao, H. B.; Clune, Amanda J.; Hughey, Kendall D.; Hong, Tao; Yan, J.-Q.; Agrawal, Harish K.; Singleton, John; Sales, B. C.; Fishman, Randy S.; et al (August 2018, Physical Review B)