title: Nanoscale Superconducting Honeycomb Charge Order in IrTe2.
abstract: Entanglement of charge orderings and other electronic orders such as superconductivity is in the core of challenging physics issues of complex materials including high temperature superconductivity. Here, we report on the observation of a unique nanometer scale honeycomb charge ordering of the cleaved IrTe2 surface, which hosts a superconducting state. IrTe2 was recently established to exhibit an intriguing cascade of stripe charge orders. The stripe phases coexist with a hexagonal phase, which is formed locally and falls into a superconducting state below 3 K. The atomic and electronic structures of the honeycomb and hexagon pattern of this phase are consistent with the charge order nature, but the superconductivity does not survive on neighboring stripe charge order domains. The present work provides an intriguing physics issue and a new direction of functionalization for two-dimensional materials.
authors.affiliation: Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS) , Pohang 790-784, Korea.|Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.
authors.forename: Hyo Sung
authors.initials: HS
authors.lastname: Kim
authors.affiliation: Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.
authors.forename: Sooran
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.
authors.forename: Kyoo
authors.initials: K
authors.lastname: Kim
authors.affiliation: Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.
authors.forename: Byung Il
authors.initials: BI
authors.lastname: Min
authors.affiliation: Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.|Laboratory for Pohang Emergent Materials, Pohang University of Science and Technology , Pohang 790-784, Korea.
authors.forename: Yong-Heum
authors.initials: YH
authors.lastname: Cho
authors.affiliation: Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.|Laboratory for Pohang Emergent Materials, Pohang University of Science and Technology , Pohang 790-784, Korea.
authors.forename: Lihai
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.|Laboratory for Pohang Emergent Materials, Pohang University of Science and Technology , Pohang 790-784, Korea.|Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Piscataway, New Jersey 08854, United States.
authors.forename: Sang-Wook
authors.initials: SW
authors.lastname: Cheong
authors.affiliation: Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS) , Pohang 790-784, Korea.|Department of Physics, Pohang University of Science and Technology , Pohang 790-784, Korea.
authors.forename: Han Woong
authors.initials: HW
authors.lastname: Yeom
keywords: IrTe2; charge order; honeycomb charge order; stripe charge order; superconductivity; transition metal dichalogenides