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Quantum oscillations from a two-dimensional electron gas at a Mott/band insulator interface
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Shubnikov-de Haas oscillations measured at 360 mK as a function of for different tilt angles θ of B with respect to the interface normal. (b) Frequency of peak “a” (open circles) in the Fourier transform (see inset) and its frequency multiplied with cosθ (solid symbols) as a function of tilt angle. The dashed line is a linear fit. The inset shows a Fourier transform of ΔRxx as a function of at θ = 0°.

Image of FIG. 2.
FIG. 2.

Shubnikov-de Haas oscillations (ΔRxx as a function of ) at 360 mK and θ = 0°. The solid and dashed arrows indicate strong and weak oscillations, respectively. The insets show Fourier transforms of the regions indicated by the red boxes. For small B, two frequencies are evident at 637 T and 1170 T. At higher values of B, a single frequency is measured, at a value of 1170 T.

Image of FIG. 3.
FIG. 3.

(a) Temperature dependent Shubnikov-de Haas oscillations (ΔRxx asa function of ) and θ = 0° at temperatures between 360 mK and 10 K. (b) Fourier transform of the data. The inset shows A(T)/T of peak a as a function of temperature and a fit according Eq. (1).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantum oscillations from a two-dimensional electron gas at a Mott/band insulator interface