Shubnikov-de Haas Oscillations of the Quasi-Two-Dimensional Organic Conductor β-(BEDT-TTF)2I3 under Pressure
- Resource Type
- Article
- Authors
- W. Kang; Haeyong Kang; Y. J. Jo
- Source
- Journal of the Korean Physical Society, 50(1I), pp.97-101 Jan, 2007
- Subject
- 물리학
- Language
- ISSN
- 1976-8524
0374-4884
We measured the Shubnikov-de Haas oscillations of the quasi-two-dimensional organic conduc- tor .-(BEDT-TTF)2I3 under a hydrostatic pressure of 7 kbar. The amplitude of the oscillations was greatly reduced from its ambient pressure value, but the quasi-two-dimensional nature was preserved in spite of a .ve-fold decrease in Tc. While the fundamental frequency increased by 6.3 %, re°ecting the compressibility under pressure, the ratio of the modulation frequency to the fun- damental frequency decreased from 9.9 £ 10¡3 to 8.3 £ 10¡3. Pressure not only compressed the material but also rendered the Fermi surface more two-dimensional.