Weak localization competes with the quantum oscillations in a natural electronic superlattice: the case of Na 1.5 (PO 2 ) 4 (WO 3 ) 20

Kamil K Kolincio (1, 2) , Olivier Pérez (1) , Enric Canadell (3) , Pere Alemany (4) , Elen Duverger-Nédellec (1) , Arianna Minelli (5) , Alexei Bosak (5) , Alain Pautrat (1)

1 CRISMAT - Laboratoire de cristallographie et sciences des matériaux
2 GUT - Gdańsk University of Technology
3 ICMAB - Institut de Ciència de Materials de Barcelona
4 UB - Universitat de Barcelona
5 ESRF - European Synchrotron Radiation Facility [Grenoble]

We report an investigation of the combined structural and electronic properties of the bronze Na1.5(PO2)4(WO3)20. Its low dimensional structure and possible large reconstruction of the Fermi surface due to charge density wave instability makes this bulk material a natural superlattice with a reduced number of carriers and Fermi energy. Signatures of multilayered 2D electron weak localization are consequently reported, with an enhanced influence of quantum oscillations. A crossover between these two antagonistic entities previously observed only in genuine low dimensional materials and devices, is shown to occur in a bulk crystal due to its hidden 2D nature.

Mots clés: Anisotropic magnetoresistance; Charge density waves; Charge order; Electrical conductivity; Fermi surface; Magnetoresistance; Nesting; Shubnikov-de Haas effect; Structural properties; Weak antilocalization; Single crystal materials; Two-dimensional electron gas; Crystal structures; Density functional thoery; Resistivity measurements; X-ray diffuse scattering

Domaines: Matière Condensée [cond-mat]

Kamil K Kolincio, Olivier Pérez, Enric Canadell, Pere Alemany, Elen Duverger-Nédellec, et al.. Weak localization competes with the quantum oscillations in a natural electronic superlattice: the case of Na 1.5 (PO 2 ) 4 (WO 3 ) 20. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2020, 101 (16), pp.161117. ⟨10.1103/PhysRevB.101.161117⟩. ⟨hal-03097134⟩