Evolution of quasiparticle charge in the fractional quantum hall regime

被引：57

作者：

Griffiths, TG ^{[1
]}

Comforti, E ^{[1
]}

Heiblum, M ^{[1
]}

Stern, A ^{[1
]}

Umansky, V ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Condensed Matter Phys, Braun Ctr Submicron Res, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.85.3918

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The charge of quasiparticles in a fractional quantum Nail (FQH) liquid, tunneling through a partly reflecting constriction with transmission t, was determined via shot noise measurements. In the nu = 1/3 FQH state, a charge smoothly evolving from e* = e/3 for t(1/3) congruent to 1 to e* = e for t(1/3) << 1 was determined, agreeing with chiral Luttinger liquid theory. In the nu = 2/5 FQH state the quasiparticle charge evolves smoothly from e* = e/5 at t(2/5) congruent to 1 to a maximum charge less than e* = e/3 at t(2/5) << 1 Thus it appears that quasiparticles with an approximate charge e/5 pass a barrier they see as almost opaque.

引用

页码：3918 / 3921

页数：4

共 16 条

[1] TUNNELING AND QUANTUM-NOISE IN ONE-DIMENSIONAL LUTTINGER LIQUIDS [J].