Coherent vs incoherent interlayer transport in layered metals.
The magnetic-field, temperature, and angular dependence of the interlayer magnetoresistance of two different quasi-two-dimensional (2D) organic superconductors is reported. For {kappa}-(BEDT-TTF){sub 2}I{sub 3}, where BEDT-TTF is bisethylenedithio-tetrathiafulvalene, we find a well-resolved peak in the angle-dependent magnetoresistance at {Theta}=90 degrees (field parallel to the layers). This clear-cut proof for the coherent nature of the interlayer transport is absent for {beta}{double_prime}-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}. This and the nonmetallic behavior of the magnetoresistance suggest an incoherent quasiparticle motion for the latter 2D metal.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 949356
- Report Number(s):
- ANL/MSD/JA-40223
- Journal Information:
- Phys. Rev. B, Journal Name: Phys. Rev. B Journal Issue: 18 ; May 1, 2002 Vol. 65; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- ENGLISH
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