title: Localized surface modes in parity-time-symmetric potentials.
abstract: We investigate light-beam propagation along the interface between linear and nonlinear media with parity-time symmetry. A novel class of two-dimensional localized surface modes (LSMs) is found analytically and numerically. If the potential is parity-time invariant along the direction parallel to the interface between the two media, stable LSMs can exist. Otherwise, if the potential is parity-time invariant along the direction perpendicular to the interface between the two media, there are no stable LSMs.
authors.forename: Huagang
authors.initials: H
authors.lastname: Li
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Shi
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Jiang
authors.forename: Xing
authors.initials: X
authors.lastname: Zhu
authors.forename: Tianshu
authors.initials: T
authors.lastname: Lai
authors.forename: Chaohong
authors.initials: C
authors.lastname: Lee