Role of the dimerized gap due to anion ordering in spin-density wave phase of (TMTSF)2ClO4 at high magnetic fields
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概要
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Magnetoresistance measurements have been carried out along the highly conducting a axis in the fieldinducedspin-density wave (FISDW) phase of hydrogenated and deuterated (TMTSF)2ClO4 for various coolingrates through the anion ordering temperature. With increasing the cooling rate, (i) the high-field phaseboundary βHI , observed at 27 T in hydrogenated samples for slowly cooled, is shifted towards a lower field,(ii) the last semimetallic SDW phase below βHI is suppressed, and (iii) the FISDW insulating phase above βHIis enhanced in both salts. The cooling rate dependence of the FISDW transition and of βHI in both salts can beexplained by taking into account the peculiar SDW nesting vector stabilized by the dimerized gap due to anionordering.
- American Physical Societyの論文
- 2002-07-01
American Physical Society | 論文
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