Huang, DennisSong, Can-LiWebb, TatianaFang, ShiangChang, Cui-ZuMoodera, Jagadeesh S.Kaxiras, EfthimiosHoffman, Jenny2017-02-212015Huang, Dennis, Can-Li Song, Tatiana A. Webb, Shiang Fang, Cui-Zu Chang, Jagadeesh S. Moodera, Efthimios Kaxiras, and Jennifer E. Hoffman. 2015. “Revealing the Empty-State Electronic Structure of Single-Unit-Cell FeSe/SrTiO3.” Physical Review Letters 115 (1) (July). doi:10.1103/physrevlett.115.017002.0031-9007http://nrs.harvard.edu/urn-3:HUL.InstRepos:30403682We use scanning tunneling spectroscopy to investigate the filled and empty electronic states of superconducting single-unit-cell FeSe deposited on SrTiO3(001). We map the momentum-space band structure by combining quasiparticle interference imaging with decay length spectroscopy. In addition to quantifying the filled-state bands, we discover a Γ-centered electron pocket 75 meV above the Fermi energy. Our density functional theory calculations show the orbital nature of empty states at Γ and explain how the Se height is a key tuning parameter of their energies, with broad implications for electronic properties.en-USJournal Article2017-02-2110.1103/PhysRevLett.115.017002