TY - JOUR
T1 - Superconducting transition at 38 K in insulating-overdoped La2CuO4-La1.64Sr0.36CuO4 superlattices
T2 - Evidence for interface electronic redistribution from resonant soft X-ray scattering
AU - Smadici, S.
AU - Lee, J. C.T.
AU - Wang, S.
AU - Abbamonte, P.
AU - Logvenov, G.
AU - Gozar, A.
AU - Cavellin, C. Deville
AU - Bozovic, I.
PY - 2009/3/9
Y1 - 2009/3/9
N2 - We use resonant soft x-ray scattering (RSXS) to quantify the hole distribution in a superlattice of insulating La2CuO4 (LCO) and overdoped La2-xSrxCuO4 (LSCO). Despite its nonsuperconducting constituents, this structure is superconducting with Tc=38K. We found that the conducting holes redistribute electronically from LSCO to the LCO layers. The LCO layers were found to be optimally doped, suggesting they are the main drivers of superconductivity. Our results demonstrate the utility of RSXS for separating electronic from structural effects at oxide interfaces.
AB - We use resonant soft x-ray scattering (RSXS) to quantify the hole distribution in a superlattice of insulating La2CuO4 (LCO) and overdoped La2-xSrxCuO4 (LSCO). Despite its nonsuperconducting constituents, this structure is superconducting with Tc=38K. We found that the conducting holes redistribute electronically from LSCO to the LCO layers. The LCO layers were found to be optimally doped, suggesting they are the main drivers of superconductivity. Our results demonstrate the utility of RSXS for separating electronic from structural effects at oxide interfaces.
UR - http://www.scopus.com/inward/record.url?scp=63249091451&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63249091451&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.102.107004
DO - 10.1103/PhysRevLett.102.107004
M3 - Article
C2 - 19392148
AN - SCOPUS:63249091451
SN - 0031-9007
VL - 102
JO - Physical review letters
JF - Physical review letters
IS - 10
M1 - 107004
ER -