Dispersion of quantum well states in Cu/Co/Cu(001)

Y. Z. Wu; C. Y. Won; E. Rotenberg; H. W. Zhao; F. Toyoma; N. V. Smith; Z. Q. Qiu

doi:10.1103/PhysRevB.66.245418

Dispersion of quantum well states in Cu/Co/Cu(001)

Y. Z. Wu, C. Y. Won, E. Rotenberg, H. W. Zhao, F. Toyoma, N. V. Smith, Z. Q. Qiu

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

Abstract

Quantum well states (QWS’s) in Cu thin films grown on Co/Cu(001) were studied using angle-resolved photoemission spectroscopy. For the normal photoemission, QWS’s from both lower and higher energy bands relative to the vacuum level were measured, and explained by phase accumulation method. QWS’s from the lower band were studied in detail as a function of the in-plane momentum (formula presented) We found that the QWS dispersion depends on the Cu film thickness. From the experimental data, we deduced the quantized perpendicular momentum (formula presented) and the energy as a function of (formula presented) Our results show that the in-plane effective mass can not be obtained by a simple parabolic fitting of the E vs (formula presented) due to the dependence of (formula presented) on (formula presented).

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.66.245418
Publication status	Published - 2002

Access to Document

10.1103/PhysRevB.66.245418

Cite this

@article{44d3817107644d5f834ca8addb0fd175,

title = "Dispersion of quantum well states in Cu/Co/Cu(001)",

abstract = "Quantum well states (QWS{\textquoteright}s) in Cu thin films grown on Co/Cu(001) were studied using angle-resolved photoemission spectroscopy. For the normal photoemission, QWS{\textquoteright}s from both lower and higher energy bands relative to the vacuum level were measured, and explained by phase accumulation method. QWS{\textquoteright}s from the lower band were studied in detail as a function of the in-plane momentum (formula presented) We found that the QWS dispersion depends on the Cu film thickness. From the experimental data, we deduced the quantized perpendicular momentum (formula presented) and the energy as a function of (formula presented) Our results show that the in-plane effective mass can not be obtained by a simple parabolic fitting of the E vs (formula presented) due to the dependence of (formula presented) on (formula presented).",

author = "Wu, {Y. Z.} and Won, {C. Y.} and E. Rotenberg and Zhao, {H. W.} and F. Toyoma and Smith, {N. V.} and Qiu, {Z. Q.}",

year = "2002",

doi = "10.1103/PhysRevB.66.245418",

language = "English",

volume = "66",

pages = "1--5",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - Dispersion of quantum well states in Cu/Co/Cu(001)

AU - Wu, Y. Z.

AU - Won, C. Y.

AU - Rotenberg, E.

AU - Zhao, H. W.

AU - Toyoma, F.

AU - Smith, N. V.

AU - Qiu, Z. Q.

PY - 2002

Y1 - 2002

N2 - Quantum well states (QWS’s) in Cu thin films grown on Co/Cu(001) were studied using angle-resolved photoemission spectroscopy. For the normal photoemission, QWS’s from both lower and higher energy bands relative to the vacuum level were measured, and explained by phase accumulation method. QWS’s from the lower band were studied in detail as a function of the in-plane momentum (formula presented) We found that the QWS dispersion depends on the Cu film thickness. From the experimental data, we deduced the quantized perpendicular momentum (formula presented) and the energy as a function of (formula presented) Our results show that the in-plane effective mass can not be obtained by a simple parabolic fitting of the E vs (formula presented) due to the dependence of (formula presented) on (formula presented).

AB - Quantum well states (QWS’s) in Cu thin films grown on Co/Cu(001) were studied using angle-resolved photoemission spectroscopy. For the normal photoemission, QWS’s from both lower and higher energy bands relative to the vacuum level were measured, and explained by phase accumulation method. QWS’s from the lower band were studied in detail as a function of the in-plane momentum (formula presented) We found that the QWS dispersion depends on the Cu film thickness. From the experimental data, we deduced the quantized perpendicular momentum (formula presented) and the energy as a function of (formula presented) Our results show that the in-plane effective mass can not be obtained by a simple parabolic fitting of the E vs (formula presented) due to the dependence of (formula presented) on (formula presented).

UR - http://www.scopus.com/inward/record.url?scp=85038971350&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.66.245418

DO - 10.1103/PhysRevB.66.245418

M3 - Article

AN - SCOPUS:85038971350

SN - 1098-0121

VL - 66

SP - 1

EP - 5

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 24

ER -

Dispersion of quantum well states in Cu/Co/Cu(001)

Abstract

Access to Document

Other files and links

Fingerprint

Cite this