  Misfit strain delivered from single-crystal substrates typically modifies the
ground states of transition metal oxides, generating increasing interests in
designing modern transducers and sensors. Here, we demonstrate that
magnetotransport properties of La$_{0.67}$Sr$_{0.33}$MnO$_3$ (LSMO) films were
continuously tuned by uniaxial strain produced by a home-designed bending jig.
The electrical conductivity and Curie temperature of LSMO films are enhanced by
bending stresses. The resistivity of a u-shape bended LSMO decays three times
faster than that of a n-shape bended LSMO as a response to the same magnitude
of strain. The asymmetric magnetic states in uniaxially strained LSMO are
attributed to the dual actions of Jahn-Teller distortion and strain gradient
mediated flexoelectric fields in an adjacent ferroelectric layer. These
findings of multi-field regulation in a single material provide a feasible
means for developing flexible electronic and spintronic devices.
