The Radial Dependence of Proton-scale Magnetic Spectral Break in Slow Solar Wind during PSP Encounter 2 - Duan, D; Bowen, TA; Chen, CHK; Mallet, A; He, J; Bale, SD; Vech, D; Kasper, JC; Pulupa, M; Bonnell, JW; Case, AW; de, Wit TD; et al. (ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020)