Abstract
We observed beats in the Shubnikov-de Haas oscillations of the interlayer magnetoresistance Rzz for the organic conductor κ-(BEDT-TTF) 2Cu(NCS)2 pressurized at 7 kbar. Direct observation of a beat pattern is an evidence of coherence in interlayer electron transport. From the beat frequency, the amplitude of the interlayer dispersion, t =E F, was estimated to be 1/250 which doubles the previous estimation from the coherence peak at ambient pressure. In the Fourier transformation spectrum, the frequency splits in the α- and β-oscillations gave t for both orbits as 0:17 ± 0:01 meV.
Original language | English |
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Article number | 044716 |
Journal | Journal of the Physical Society of Japan |
Volume | 79 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2010 |
Keywords
- Beating
- Interlayer resistance
- Magnetoresistance
- Organic superconductor
- Pressure
- Shubnikov-de Hass oscillations