Two Electronically Distinct Copper Sites in La2–xSrxCuO4–δCompounds for 0.10 ≤ x ≤ 0.20

Mark A. Kennard; Yiqiao Song; W. P. Halperin; Mark A. Kennard; Yiqiao Song; Kenneth R. Poeppelmeier

doi:10.1021/cm00016a021

Two Electronically Distinct Copper Sites in La_2–xSr_xCuO_4–δCompounds for 0.10 ≤ x ≤ 0.20

Mark A. Kennard, Yiqiao Song, W. P. Halperin, Mark A. Kennard, Yiqiao Song, Kenneth R. Poeppelmeier

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

9 Scopus citations

Abstract

We report copper NQR and NMR measurements performed on the series La_2–xSr_xCuO₄(0.10 ≤ x ≤ 0.20). For each composition, two distinct sites of copper were observed. The relative occupation of the two sites correlates well with strontium doping. Transverse NMR shifts (H ⊥ c) of the two copper sites were derived from the NMR and NQR spectra. The temperature dependence of the ⁶³Cu NMR frequency shifts are identical for both sites, indicating that they have the same electronic spin susceptibility and hyperfine fields, and both are in the superconducting phase having the same critical temperature. However, these two sites have distinct orbital frequency shifts and electric field gradients.

Original language	English (US)
Pages (from-to)	672-677
Number of pages	6
Journal	Chemistry of Materials
Volume	3
Issue number	4
DOIs	https://doi.org/10.1021/cm00016a021
State	Published - Jul 1 1991

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

Access to Document

10.1021/cm00016a021

Cite this

@article{874e093b7d2d4a0e97c187b955121943,

title = "Two Electronically Distinct Copper Sites in La2–xSrxCuO4–δCompounds for 0.10 ≤ x ≤ 0.20",

abstract = "We report copper NQR and NMR measurements performed on the series La2–xSrxCuO4(0.10 ≤ x ≤ 0.20). For each composition, two distinct sites of copper were observed. The relative occupation of the two sites correlates well with strontium doping. Transverse NMR shifts (H ⊥ c) of the two copper sites were derived from the NMR and NQR spectra. The temperature dependence of the 63Cu NMR frequency shifts are identical for both sites, indicating that they have the same electronic spin susceptibility and hyperfine fields, and both are in the superconducting phase having the same critical temperature. However, these two sites have distinct orbital frequency shifts and electric field gradients.",

author = "Kennard, {Mark A.} and Yiqiao Song and Halperin, {W. P.} and Kennard, {Mark A.} and Yiqiao Song and Poeppelmeier, {Kenneth R.}",

year = "1991",

month = jul,

day = "1",

doi = "10.1021/cm00016a021",

language = "English (US)",

volume = "3",

pages = "672--677",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

number = "4",

}

TY - JOUR

T1 - Two Electronically Distinct Copper Sites in La2–xSrxCuO4–δCompounds for 0.10 ≤ x ≤ 0.20

AU - Kennard, Mark A.

AU - Song, Yiqiao

AU - Halperin, W. P.

AU - Kennard, Mark A.

AU - Song, Yiqiao

AU - Poeppelmeier, Kenneth R.

PY - 1991/7/1

Y1 - 1991/7/1

N2 - We report copper NQR and NMR measurements performed on the series La2–xSrxCuO4(0.10 ≤ x ≤ 0.20). For each composition, two distinct sites of copper were observed. The relative occupation of the two sites correlates well with strontium doping. Transverse NMR shifts (H ⊥ c) of the two copper sites were derived from the NMR and NQR spectra. The temperature dependence of the 63Cu NMR frequency shifts are identical for both sites, indicating that they have the same electronic spin susceptibility and hyperfine fields, and both are in the superconducting phase having the same critical temperature. However, these two sites have distinct orbital frequency shifts and electric field gradients.

AB - We report copper NQR and NMR measurements performed on the series La2–xSrxCuO4(0.10 ≤ x ≤ 0.20). For each composition, two distinct sites of copper were observed. The relative occupation of the two sites correlates well with strontium doping. Transverse NMR shifts (H ⊥ c) of the two copper sites were derived from the NMR and NQR spectra. The temperature dependence of the 63Cu NMR frequency shifts are identical for both sites, indicating that they have the same electronic spin susceptibility and hyperfine fields, and both are in the superconducting phase having the same critical temperature. However, these two sites have distinct orbital frequency shifts and electric field gradients.

UR - http://www.scopus.com/inward/record.url?scp=26344433081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26344433081&partnerID=8YFLogxK

U2 - 10.1021/cm00016a021

DO - 10.1021/cm00016a021

M3 - Article

AN - SCOPUS:26344433081

VL - 3

SP - 672

EP - 677

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 4

ER -

Two Electronically Distinct Copper Sites in La_2–xSr_xCuO_4–δCompounds for 0.10 ≤ x ≤ 0.20

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this