Spatially correlated incommensurate lattice modulations in an atomically thin high-temperature Bi2.1Sr1.9CaCu2.0O8+y superconductor
Journal Article
·
· Physical Review Materials
- IFW Dresden (Germany); Harvard Univ., Cambridge, MA (United States)
- Harvard Univ., Cambridge, MA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- National Inst. for Materials Science, Tsukuba (Japan)
- CNR, Monterotondo Roma (Italy)
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States)
Strong variations in superconducting critical temperatures in different families of the cuprate perovskites, even with similar hole doping in their copper-oxygen planes, suggest the importance of lattice modulation effects. The one-dimensional incommensurate lattice modulation (ILM) of Bi2Sr2CaCu2O8+y, with the average atomic positions perturbed beyond the unit cell6, offers an ideal test ground for studying the interplay between superconductivity and the long-range incommensurate lattice fluctuations. Here we report Scanning nano X-ray Diffraction (SnXRD) imaging of incommensurate lattice modulations in Bi2Sr2CaCu2O8+y Van der Waals heterostructures of thicknesses down to two-unit cells. Using SnXRD, we probe that the long-range and short-range incommensurate lattice modulations in bulk sample surface with spatial resolution below 100 nm. We find that puddle-like domains of ILM of size uniformly evolving with dimensionality. In the 2-unit cell thin sample, it is observed that the wavevectors of the long- and short-range orders become anticorrelated with emerging spatial patterns having a directional gradient. The emerging patterns, originated by tiny tuning of lattice strain, induce static mesoscopic charge density waves. Finally, our findings thus demonstrate that the strain can be used to tune and control the electromagnetic properties of two-dimensional high-temperature superconductors.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)
- Sponsoring Organization:
- Japan Science and Technology Agency (JST); Japan Society for the Promotion of Science (JSPS) - KAKENHI; Japan Society for the Promotion of Science (JSPS) KAKENHI; Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan; National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; SC0012704
- OSTI ID:
- 1725766
- Alternate ID(s):
- OSTI ID: 1779215
- Report Number(s):
- BNL-220656-2020-JAAM
- Journal Information:
- Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 11 Vol. 4; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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