GAP DETERMINATION IN THE FIELD-INDUCED-SPIN-DENSITY-WAVE STATE OF (TMTSF)2CLO4 VIA FAR-INFRARED PHOTOCONDUCTIVITY

被引：6

作者：

LEFEBVRE, J

BEERENS, J

BOURBONNAIS, C

CARON, LG

LENOIR, C

BATAIL, P

机构：

[1] UNIV SHERBROOKE,DEPT PHYS,SHERBROOKE J1K 2R1,QUEBEC,CANADA

[2] UNIV PARIS 11,PHYS SOLIDES LAB,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.72.3417

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the determination of the field-induced-spin-density-wave optical gap of the organic superconductor (TMTSF)2ClO4, by direct measurement of the far-infrared photoconductivity. The energy spectrum shows a sharp resonance of photoconductivity centered at 19 cm-1 attributed to the single-particle gap. Its amplitude in the symmetry breaking phases is independent of temperature (for 2-5 K) and magnetic field (to 14 T). This is consistent with previous far-infrared transmission studies suggesting that in contrast to the predictions of existing models, the condensate fraction rather than the gap should represent the order parameter of the cascade of phase transitions.

引用

页码：3417 / 3420

页数：4

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