Superconducting Density of States from the Magnetic Penetration Depth of Electron-Doped Cuprates 2-xx4-yLaCeCuO and 2-xx4-yPrCeCuO

John A. Skinta; Mun-Seog Kim; Thomas R. Lemberger; Tine Greibe; M. Naito

doi:10.1023/A:1022962110978

Superconducting Density of States from the Magnetic Penetration Depth of Electron-Doped Cuprates _{2-x_x_4-yLaCeCuO}and _{2-x_x_4-yPrCeCuO}

John A. Skinta, Mun-Seog Kim, Thomas R. Lemberger, Tine Greibe, M. Naito

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

From measurements of the magnetic penetration depth, lambda(T), from 1.6 K to T-c in films of electron-doped cuprates La2-xCexCuO4-y and Pr2-xCexCuO4-y we obtain the normalized density of states, N-s(E) at T=0 by using a simple model. In this framework, the flat behavior of lambda(-2)(T) at low T implies N-s(E) is small, possibly gapped, at low energies. The upward curvature in lambda(-2)(T) near T-c seen in overdoped films implies that superfluid comes from an anomalously small energy band within about 3k(B)T(c) of the Fermi surface.

Original language	English
Journal	Journal of Low Temperature Physics
Volume	131
Issue number	3-4
Pages (from-to)	359-368
ISSN	0022-2291
DOIs	https://doi.org/10.1023/A:1022962110978
Publication status	Published - 2001
Externally published	Yes
Event	International Conference on Physics and Chemistry of Molecular and Oxide Superconductors (MOS2002) - Hsinchu, Taiwan, Province of China Duration: 13 Aug 2002 → 18 Aug 2002

Conference

Conference	International Conference on Physics and Chemistry of Molecular and Oxide Superconductors (MOS2002)
Country/Territory	Taiwan, Province of China
City	Hsinchu
Period	13/08/2002 → 18/08/2002

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@inproceedings{a60f80cf1175414a8bd0f654f0a65c66,

title = "Superconducting Density of States from the Magnetic Penetration Depth of Electron-Doped Cuprates 2-xx4-yLaCeCuO and 2-xx4-yPrCeCuO",

abstract = "From measurements of the magnetic penetration depth, lambda(T), from 1.6 K to T-c in films of electron-doped cuprates La2-xCexCuO4-y and Pr2-xCexCuO4-y we obtain the normalized density of states, N-s(E) at T=0 by using a simple model. In this framework, the flat behavior of lambda(-2)(T) at low T implies N-s(E) is small, possibly gapped, at low energies. The upward curvature in lambda(-2)(T) near T-c seen in overdoped films implies that superfluid comes from an anomalously small energy band within about 3k(B)T(c) of the Fermi surface. ",

author = "Skinta, {John A.} and Mun-Seog Kim and Lemberger, {Thomas R.} and Tine Greibe and M. Naito",

year = "2001",

doi = "10.1023/A:1022962110978",

language = "English",

volume = "131",

pages = "359--368",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer New York",

number = "3-4",

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T1 - Superconducting Density of States from the Magnetic Penetration Depth of Electron-Doped Cuprates 2-xx4-yLaCeCuO and 2-xx4-yPrCeCuO

AU - Skinta, John A.

AU - Kim, Mun-Seog

AU - Lemberger, Thomas R.

AU - Greibe, Tine

AU - Naito, M.

PY - 2001

Y1 - 2001

N2 - From measurements of the magnetic penetration depth, lambda(T), from 1.6 K to T-c in films of electron-doped cuprates La2-xCexCuO4-y and Pr2-xCexCuO4-y we obtain the normalized density of states, N-s(E) at T=0 by using a simple model. In this framework, the flat behavior of lambda(-2)(T) at low T implies N-s(E) is small, possibly gapped, at low energies. The upward curvature in lambda(-2)(T) near T-c seen in overdoped films implies that superfluid comes from an anomalously small energy band within about 3k(B)T(c) of the Fermi surface.

AB - From measurements of the magnetic penetration depth, lambda(T), from 1.6 K to T-c in films of electron-doped cuprates La2-xCexCuO4-y and Pr2-xCexCuO4-y we obtain the normalized density of states, N-s(E) at T=0 by using a simple model. In this framework, the flat behavior of lambda(-2)(T) at low T implies N-s(E) is small, possibly gapped, at low energies. The upward curvature in lambda(-2)(T) near T-c seen in overdoped films implies that superfluid comes from an anomalously small energy band within about 3k(B)T(c) of the Fermi surface.

U2 - 10.1023/A:1022962110978

DO - 10.1023/A:1022962110978

M3 - Conference article

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VL - 131

SP - 359

EP - 368

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 3-4

T2 - International Conference on Physics and Chemistry of Molecular and Oxide Superconductors (MOS2002)

Y2 - 13 August 2002 through 18 August 2002

ER -