Topological end states in two-orbital double-exchange model for colossal magnetoresistive manganites
arXiv:1602.04054 · doi:10.1103/PhysRevB.93.085139
Abstract
Manganites are famous mostly for the colossal magnetoresistive effect, which involves the phase separation between ferromagnetic phase and charge-ordered CE-type antiferromagnetic phases. Furthermore, manganites contain some typical magnetic ferroelectrics, e.g. E-type antiferromagnetic -HoMnO. Here we re-examined these zigzag-winding antiferromagnetic phases (CE-type and E-type antiferromagnets) from the topological perspective. Our theoretical analysis proved that the E-type phase is a weak topological insulator belonging to the class. In momentum space, we classify the symmetries of this phase, and find the three symmetry operators for the chiral, particle-hole, and time-reversal symmetry. The CE-type phase can be described by the Duffin-Kemmer-Petiau algebra, implying that it is a new class of topological insulator and hence extends the existing classification. The corresponding topological end states are demonstrated via numerical calculations, which may implicate the experimental observed ferromagnetic edge states in manganite strips (Nat. Commun. 6, 6179 (2015)) and may play a crucial role in the colossal magnetoresistive effect.
arXiv comment8 pages, 4 figures
References in corpus (34)
- Topological Insulators
- Topological insulators and superconductors
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Colossal Magnetoresistant Materials: The Key Role of Phase Separation
- Topological insulators and superconductors: ten-fold way and dimensional hierarchy
- Mott physics and band topology in materials with strong spin-orbit interaction
- Multiferroic materials and magnetoelectric physics: symmetry, entanglement, excitation, and topology
- Quantum anomalous Hall effect and related topological electronic states
- Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures
- Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites
- Charge and orbital order in half-doped manganites
- Competing Ferromagnetic and Charge-Ordered States in Models for Manganites: the Origin of the CMR Effect
- Topological insulators from complex orbital order in transition-metal oxides heterostructures
- Possible interaction driven topological phases in (111) bilayers of LaNiO3
- Ferromagnetic tendency at the surface of CE charge-ordered manganites
- Orbital ordering phenomena in - and -electron systems
- Ferromagnetic ground state of the robust charge-ordered manganite Pr(0.5)Ca(0.5MnO(3)obtained by minimal Al-substitution
- Unveiling New Magnetic Phases of Undoped and Doped Manganites
- Topological equivalence of crystal and quasicrystal band structures
- Topological Scenario for Stripe Formation in Manganese Oxides
- Formation of finite antiferromagnetic clusters and the effect of electronic phase separation in Pr{_0.5}Ca{_0.5}Mn{_0.975}Al{_0.025}O{_3}
- Interaction-induced quantum anomalous Hall phase in (111) bilayer of LaCoO
- Microscopic model for the ferroelectric field effect in oxide heterostructures
- Unveiling First Order CMR Transitions in the Two-Orbital Model for Manganites
- The Distinct Effects of Homogeneous Weak Disorder and Dilute Strong Scatterers on Phase Competetion in the Manganites
- Striped Multiferroic Phase in Double-Exchange Model for Quarter-Doped Manganites
- Orbital Ordering, New Phases, and Stripe Formation in Doped Layered Nickelates
- Neutron scattering evidence for magnetic field driven abrupt magnetic and structural transitions in a phase separated manganite
- Topological magnetic phase in LaMnO (111) bilayer
- Dielectrophoresis model for the colossal electroresistance of phase-separated manganites
- Solitonic Phase in Manganites
- Non-magnetic B-site Impurities Induce Ferromagnetic Tendencies in CE Manganites
- Jahn-Teller distortion induced charge-ordering in CE phase of manganites
- How Do You Want That Insulator?