Loading...
Superconductor to Mott insulator transition in YBa<inf>2</inf> Cu<inf>3</inf> O<inf>7</inf> /LaCaMnO<inf>3</inf> heterostructures
Gray, BA Middey, S Conti, G Gray, AX Kuo, CT Kaiser, AM Ueda, S Kobayashi, K Meyers, D Kareev, M
Gray, BA
Middey, S
Conti, G
Gray, AX
Kuo, CT
Kaiser, AM
Ueda, S
Kobayashi, K
Meyers, D
Kareev, M
Citations
Altmetric:
Genre
Journal Article
Date
2016-09-15
Advisor
Committee member
Group
Department
Permanent link to this record
Collections
Research Projects
Organizational Units
Journal Issue
DOI
10.1038/srep33184
Abstract
© The Author(s) 2016. The superconductor-to-insulator transition (SIT) induced by means such as external magnetic fields, disorder or spatial confinement is a vivid illustration of a quantum phase transition dramatically affecting the superconducting order parameter. In pursuit of a new realization of the SIT by interfacial charge transfer, we developed extremely thin superlattices composed of high Tc superconductor YBa2 Cu3 O7 (YBCO) and colossal magnetoresistance ferromagnet La0.67 Ca0.33 MnO3 (LCMO). By using linearly polarized resonant X-ray absorption spectroscopy and magnetic circular dichroism, combined with hard X-ray photoelectron spectroscopy, we derived a complete picture of the interfacial carrier doping in cuprate and manganite atomic layers, leading to the transition from superconducting to an unusual Mott insulating state emerging with the increase of LCMO layer thickness. In addition, contrary to the common perception that only transition metal ions may respond to the charge transfer process, we found that charge is also actively compensated by rare-earth and alkaline-earth metal ions of the interface. Such deterministic control of Tc by pure electronic doping without any hindering effects of chemical substitution is another promising route to disentangle the role of disorder on the pseudo-gap and charge density wave phases of underdoped cuprates.
Description
Citation
Citation to related work
Springer Science and Business Media LLC
Has part
Scientific Reports
ADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu