6533b861fe1ef96bd12c505c

RESEARCH PRODUCT

Magnetic breakdown and charge density wave formation: a quantum oscillation study of the rare-earth tritellurides

J. A. W. StraquadineJ. A. W. StraquadineS. AeschlimannMun ChanPhilip WalmsleyPhilip WalmsleyRoss D. McdonaldIan R. FisherIan R. FisherP. Giraldo-galloScott Riggs

subject

Quantum phase transitionPhysicsCondensed matter physicsStrongly Correlated Electrons (cond-mat.str-el)Rare earthQuantum oscillationsFOS: Physical sciencesModel systemFermi surface02 engineering and technologyMagnetic breakdown021001 nanoscience & nanotechnology01 natural sciencesCondensed Matter - Strongly Correlated ElectronsEffective mass (solid-state physics)0103 physical sciences010306 general physics0210 nano-technologyCharge density wave

description

The rare-earth tritellurides ($R$Te$_3$, where $R$ = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Y) form a charge density wave state consisting of a single unidirectional charge density wave for lighter $R$, with a second unidirectional charge density wave, perpendicular and in addition to the first, also present at low temperatures for heavier $R$. We present a quantum oscillation study in magnetic fields up to 65T that compares the single charge density wave state with the double charge density wave state both above and below the magnetic breakdown field of the second charge density wave. In the double charge density wave state it is observed that there remain several small, light pockets with the largest occupying around 0.5% of the Brillouin zone. By applying magnetic fields above the independently determined magnetic breakown field, the quantum oscillation frequencies of the single charge density wave state are recovered, as expected in a magnetic breakdown scenario. Measurements of the electronic effective mass do not show any divergence or significant increase on the pockets of Fermi surface observed here as the putative quantum phase transition between the single and double charge density wave states is approached.

yearjournalcountryeditionlanguage
2020-03-21
https://dx.doi.org/10.48550/arxiv.2003.09657