Measurement of High Density Electrons Above a Helium Film on an Amorphous Metal Substrate

K. E. Castoria; S. A. Lyon

doi:10.1007/s10909-022-02904-8

Measurement of High Density Electrons Above a Helium Film on an Amorphous Metal Substrate

K. E. Castoria, S. A. Lyon

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

Abstract

We have measured two-dimensional electron systems bound to a thin helium film supported by a metallic substrate. We report on our measurement of electron density obtained via a Kelvin probe technique. The underlying metallic substrate is an amorphous metallic alloy (TaWSi), which can support large uniform densities due to its low surface roughness and homogeneous work function. We find that this substrate is able to support high enough densities that the electrons are expected to be Fermi-degenerate.

Original language	English (US)
Pages (from-to)	441-450
Number of pages	10
Journal	Journal of Low Temperature Physics
Volume	210
Issue number	3-4
DOIs	https://doi.org/10.1007/s10909-022-02904-8
State	Published - Feb 2023

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
General Materials Science
Condensed Matter Physics

Keywords

Amorphous metal
Electrons on helium
Fermi degenerate
Thin film

Access to Document

10.1007/s10909-022-02904-8

Cite this

@article{cd71b1f47c254f02b53fd1c191918fa7,

title = "Measurement of High Density Electrons Above a Helium Film on an Amorphous Metal Substrate",

abstract = "We have measured two-dimensional electron systems bound to a thin helium film supported by a metallic substrate. We report on our measurement of electron density obtained via a Kelvin probe technique. The underlying metallic substrate is an amorphous metallic alloy (TaWSi), which can support large uniform densities due to its low surface roughness and homogeneous work function. We find that this substrate is able to support high enough densities that the electrons are expected to be Fermi-degenerate.",

keywords = "Amorphous metal, Electrons on helium, Fermi degenerate, Thin film",

author = "Castoria, {K. E.} and Lyon, {S. A.}",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2023",

month = feb,

doi = "10.1007/s10909-022-02904-8",

language = "English (US)",

volume = "210",

pages = "441--450",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer New York",

number = "3-4",

}

TY - JOUR

T1 - Measurement of High Density Electrons Above a Helium Film on an Amorphous Metal Substrate

AU - Castoria, K. E.

AU - Lyon, S. A.

PY - 2023/2

Y1 - 2023/2

N2 - We have measured two-dimensional electron systems bound to a thin helium film supported by a metallic substrate. We report on our measurement of electron density obtained via a Kelvin probe technique. The underlying metallic substrate is an amorphous metallic alloy (TaWSi), which can support large uniform densities due to its low surface roughness and homogeneous work function. We find that this substrate is able to support high enough densities that the electrons are expected to be Fermi-degenerate.

AB - We have measured two-dimensional electron systems bound to a thin helium film supported by a metallic substrate. We report on our measurement of electron density obtained via a Kelvin probe technique. The underlying metallic substrate is an amorphous metallic alloy (TaWSi), which can support large uniform densities due to its low surface roughness and homogeneous work function. We find that this substrate is able to support high enough densities that the electrons are expected to be Fermi-degenerate.

KW - Amorphous metal

KW - Electrons on helium

KW - Fermi degenerate

KW - Thin film

UR - http://www.scopus.com/inward/record.url?scp=85141576977&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85141576977&partnerID=8YFLogxK

U2 - 10.1007/s10909-022-02904-8

DO - 10.1007/s10909-022-02904-8

M3 - Article

AN - SCOPUS:85141576977

SN - 0022-2291

VL - 210

SP - 441

EP - 450

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 3-4

ER -

Measurement of High Density Electrons Above a Helium Film on an Amorphous Metal Substrate

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this