期刊
NATURE COMMUNICATIONS
卷 4, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms3113
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资金
- European Commission [228043]
- French Agence Nationale de la Recherche (ANR) [AF-12-BS04-0012-01]
- National Science Foundation [DMR-0654118]
- State of Florida
- US Department of Energy
- Canadian Institute for Advanced Research
- Natural Science and Engineering Research Council
Evidence is mounting that charge order competes with superconductivity in high T-c cuprates. Whether this has any relationship to the pairing mechanism is unknown as neither the universality of the competition nor its microscopic nature has been established. Here, we show using nuclear magnetic resonance that charge order in YBa2Cu3Oy has maximum strength inside the superconducting dome, similar to compounds of the La2-x(Sr,Ba)(x)CuO4 family. In YBa2Cu3Oy, this occurs at doping levels of p = 0.11-0.12. We further show that the overlap of halos of incipient charge order around vortex cores, similar to those visualised in Bi2Sr2CaCu2O8+delta, can explain the threshold magnetic field at which long-range charge order emerges. These results reveal universal features of a competition in which charge order and superconductivity appear as joint instabilities of the same normal state, whose relative balance can be field-tuned in the vortex state.
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