Transition in the correlated 2D electron system induced by a periodic density modulation

R. L. Willett; K. W. West; L. N. Pfeiffer

doi:10.1103/PhysRevLett.78.4478

Transition in the correlated 2D electron system induced by a periodic density modulation

R. L. Willett, K. W. West, L. N. Pfeiffer

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

We have experimentally examined the effects of periodic density modulation on correlations in a 2D electron system with tunable gate structures using dc transport and surface acoustic waves (SAW). Application of a modulation induces a dramatic transition at filling factor 1/2 where the properties of the composite fermion Fermi surface are replaced by a large effect similar to that displayed by quantum Hall states. This new effect occurs for SAW measurements orthogonal to the modulation wave vector and only for a sufficiently small modulation period. No immediate explanation is assigned to this effect.

Original language	English (US)
Pages (from-to)	4478-4481
Number of pages	4
Journal	Physical review letters
Volume	78
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.78.4478
State	Published - Jun 9 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.78.4478

Cite this

@article{408a9042e89747f8a7b09dd86968887a,

title = "Transition in the correlated 2D electron system induced by a periodic density modulation",

abstract = "We have experimentally examined the effects of periodic density modulation on correlations in a 2D electron system with tunable gate structures using dc transport and surface acoustic waves (SAW). Application of a modulation induces a dramatic transition at filling factor 1/2 where the properties of the composite fermion Fermi surface are replaced by a large effect similar to that displayed by quantum Hall states. This new effect occurs for SAW measurements orthogonal to the modulation wave vector and only for a sufficiently small modulation period. No immediate explanation is assigned to this effect.",

author = "Willett, {R. L.} and West, {K. W.} and Pfeiffer, {L. N.}",

year = "1997",

month = jun,

day = "9",

doi = "10.1103/PhysRevLett.78.4478",

language = "English (US)",

volume = "78",

pages = "4478--4481",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "23",

}

TY - JOUR

T1 - Transition in the correlated 2D electron system induced by a periodic density modulation

AU - Willett, R. L.

AU - West, K. W.

AU - Pfeiffer, L. N.

PY - 1997/6/9

Y1 - 1997/6/9

N2 - We have experimentally examined the effects of periodic density modulation on correlations in a 2D electron system with tunable gate structures using dc transport and surface acoustic waves (SAW). Application of a modulation induces a dramatic transition at filling factor 1/2 where the properties of the composite fermion Fermi surface are replaced by a large effect similar to that displayed by quantum Hall states. This new effect occurs for SAW measurements orthogonal to the modulation wave vector and only for a sufficiently small modulation period. No immediate explanation is assigned to this effect.

AB - We have experimentally examined the effects of periodic density modulation on correlations in a 2D electron system with tunable gate structures using dc transport and surface acoustic waves (SAW). Application of a modulation induces a dramatic transition at filling factor 1/2 where the properties of the composite fermion Fermi surface are replaced by a large effect similar to that displayed by quantum Hall states. This new effect occurs for SAW measurements orthogonal to the modulation wave vector and only for a sufficiently small modulation period. No immediate explanation is assigned to this effect.

UR - http://www.scopus.com/inward/record.url?scp=4244062451&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4244062451&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.78.4478

DO - 10.1103/PhysRevLett.78.4478

M3 - Article

AN - SCOPUS:4244062451

SN - 0031-9007

VL - 78

SP - 4478

EP - 4481

JO - Physical review letters

JF - Physical review letters

IS - 23

ER -

Transition in the correlated 2D electron system induced by a periodic density modulation

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this