Possible electron doping of geometrically perfect spin-1/2 kagome-lattice barlowite by reduced graphene oxide
| Title | Possible electron doping of geometrically perfect spin-1/2 kagome-lattice barlowite by reduced graphene oxide |
| Publication Type | Journal Article |
| Year of Publication | 2021 |
| Authors | Gupta, K, Ninawe, P, Jain, A, Dadwal, A, Anas, M, Malik, VK, Yusuf, SM, Joy, PA, Ballav, N |
| Journal | Physical Review B |
| Volume | 104 |
| Issue | 10 |
| Pagination | L100418 |
| Date Published | SEP |
| Type of Article | Letter |
| ISSN | 2469-9950 |
| Abstract | Doping of quantum spin liquid (QSL) insulators by electron or hole leads to intriguing phase transitions to metallic and superconducting states. The barlowite family with geometrically perfect S = 1/2 kagome planes and tunable interkagome coupling is an emerging platform to realize spin-ordered, valence bond crystal, QSL states. Theoretical investigations on electron doping revealed localized states in the band gap of barlowite unlike metallicity in cuprate (Nd2CuO4). We present successful anchoring of phase-pure barlowite crystallites onto reduced graphene oxide (rGO). The resulting barlowite-rGO system was found to be an electrical semiconductor with Arrhenius activation energy of 0.07 eV. Semiconducting properties of the barlowite-rGO system were further modulated with retention of structural integrity. We have attributed such a transformation of electrical transport response to plausible electron doping thereby making charge-doping experiments on barlowite and its analogs propitious. |
| DOI | 10.1103/PhysRevB.104.L100418 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 4.036 |
Divison category:
Physical and Materials Chemistry
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