Location of the Oxygen dopant in the high temperature superconductor HgBa₂CuO ${}_{4+\delta }$ from ¹⁹⁹Hg NMR

Journal Article · Thu Oct 11 00:00:00 EDT 2018 · Physica. C, Superconductivity

DOI:https://doi.org/10.1016/j.physc.2018.10.001· OSTI ID:1476916

Stolt, Ingrid ^[1]; Lee, Jeongseop A. ^[1]; Mounce, A. M. ^[1]; Xin, Yizhou ^[1]; Halperin, W. P. ^[1]

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1. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy

In the high temperature cuprate superconductor, HgBa₂CuO ${}_{4+\delta },$, it has been determined that the dopant oxygen, O_δ, resides in the Hg-plane. We present a systematic investigation of the ¹⁹⁹Hg NMR spectrum as a function of dopant oxygen concentration, δ. At high doping levels we observe four distinct ¹⁹⁹Hg resonance peaks which follow a binomial distribution in δ corresponding to zero, one, two, and three nearest neighbor O_δ atoms. Finally and additionally, we have measured a linear dependence of the peak frequencies on doping and suggest that these measurements might be theoretically amenable.

• Research Organization: Northwestern Univ., Evanston, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: FG02-05ER46248
• OSTI ID: 1476916
• Alternate ID(s): OSTI ID: 1636617
• Journal Information: Physica. C, Superconductivity, Vol. 555; ISSN 0921-4534
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
cuprates
nuclear magnetic resonance
hole doping