[
    {
        "id": "authors:v4hw7-dvk82",
        "collection": "authors",
        "collection_id": "v4hw7-dvk82",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170314-103202121",
        "type": "article",
        "title": "XANES Study of the Valence of Pb IN (Tl_(0.5)Pb_(0.5))Sr_2Ca_(1-x)Y_xCu_2O_(7- \u03b4)",
        "author": [
            {
                "family_name": "Liang",
                "given_name": "G.",
                "clpid": "Liang-G"
            },
            {
                "family_name": "Liu",
                "given_name": "R. S.",
                "clpid": "Liu-R-S"
            },
            {
                "family_name": "Wang",
                "given_name": "L. V.",
                "orcid": "0000-0001-9783-4383",
                "clpid": "Wang-Lihong-V"
            }
        ],
        "abstract": "Near edge x-ray-absorption spectra at Pb L_3-edges have been measured for (Tl_(0.5)Pb_(0.5))Sr_2Ca_(1-x)Y_xCu_2O_(7-\u03b4) compound series. It is found that the intensity of the 2p\u21926s transition feature decreases with the substitution of Ca^(+2) by Y^(+3). This result indicates that some electronic charges have been transferred into the Pb(Tl)-O layers by this substitution. Detailed analysis suggests that the valence value of Pb in this compound series is close to +4 and it decreases with the increase of the Y-doping level x.",
        "doi": "10.1142/S0217979299003684",
        "issn": "0217-9792",
        "publisher": "World Scientific Publishing",
        "publication": "International Journal of Modern Physics B",
        "publication_date": "1999-12-20",
        "series_number": "29",
        "volume": "13",
        "issue": "29",
        "pages": "3693-3696"
    },
    {
        "id": "authors:5jvd7-ng639",
        "collection": "authors",
        "collection_id": "5jvd7-ng639",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170314-122702040",
        "type": "article",
        "title": "Cu K-Edge Study of (Tl_(0.5)Pb_(0.5))Sr_2Ca_(1-x)Y_xCu_2O_(7-\u03b4)",
        "author": [
            {
                "family_name": "Liang",
                "given_name": "G.",
                "clpid": "Liang-G"
            },
            {
                "family_name": "Liu",
                "given_name": "R. S.",
                "clpid": "Liu-R-S"
            },
            {
                "family_name": "Wang",
                "given_name": "L. V.",
                "orcid": "0000-0001-9783-4383",
                "clpid": "Wang-Lihong-V"
            }
        ],
        "abstract": "Near-edge x-ray-absorption spectra at the Cu K-edge has been measured for (Tl_(0.5)Pb_(0.5))Sr_2Ca_(1-x)Y_xCu_2O_(7-\u03b4) compound series. It is found that both the intensity of the quadruple 1s \u2192 3d transition feature and the edge-energy decrease with increasing x. Our results show that the Cu valence decreases slightly with the substitution of Ca^(+2) by Y^(+3). This result, together with recent O K-edge result the O-2p holes are reduced by the substitution, indicates that electronic charge is transferred into the entire CuO_2 layers by the Y^(+3) for Ca^(+2) substitution.",
        "doi": "10.1142/S0217979298002507",
        "issn": "0217-9792",
        "publisher": "World Scientific Publishing",
        "publication": "International Journal of Modern Physics B",
        "publication_date": "1998-12-20",
        "series_number": "29",
        "volume": "12",
        "issue": "29",
        "pages": "3296-3298"
    }
]