Magnetic-Field and Strain Engineering of Modulated Transverse Transport in Altermagnetic Topological Materials

Abstract

Here, we explore the role of inherent altermagnetic topology in transverse transport phenomena (such as crystal/anomalous Hall, Nernst, and thermal Hall effects) in several famous altermagnets, including tetragonal \textit{X}V${}_2$\textit{Y}${}_2$O (\textit{X} = K, Rb, Cs; \textit{Y} = S, Se, Te), RuO${}_2$, MnF${}_2$, as well as hexagonal CrSb and MnTe. Notably, in \textit{X}V${}_2$\textit{Y}${}_2$O, the first experimentally realized layered altermagnets, transverse transport is governed by altermagnetic pseudonodal surfaces, emphasizing the purely topological contributions to transverse transport. Interestingly, we demonstrate that strain engineering and magnetic field, two unique methods for selectively controlling crystal and anomalous transport, can substantially enhance the magnitude of these phenomena while preserving the alternating spin characteristics in both real and momentum space. Moreover, due to the spin symmetry breaking via shear strain, a new magnetic phase, fully compensated ferrimagnetism, with isotropic spin splitting, can be induced. Our findings provide effective strategies not only for manipulating transverse transport in altermagnets but also for controlling magnetic phase transitions, offering valuable insights for their potential applications in spintronics and spin caloritronics.

9 pages, 4 figures

References in corpus (38)

• Implementation strategies in phonopy and phono3py
• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
• Berry phase effect in anomalous thermoelectric transport
• Intrinsic vs. extrinsic anomalous Hall effect in ferromagnets
• Quantum transport theory of anomalous electric, thermoelectric, and thermal Hall effects in ferromagnets
• Broken Kramers' degeneracy in altermagnetic MnTe
• Altermagnetism: Exploring New Frontiers in Magnetism and Spintronics
• Direct observation of altermagnetic band splitting in CrSb thin films
• Spontaneous anomalous Hall effect arising from an unconventional compensated magnetic phase in a semiconductor
• Observation of spin-splitter torque in collinear antiferromagnetic RuO${}_2$
• Itinerant Antiferromagnetism in RuO${}_2$
• Crystal Thermal Transport in Altermagnetic RuO2
• Large band-splitting in $g$-wave type altermagnet CrSb
• Discovery of a metallic room-temperature d-wave altermagnet KV2Se2O
• dc Josephson Effect in Altermagnets
• Topological Superconductivity in Two-Dimensional Altermagnetic Metals
• Finite-momentum Cooper pairing in proximitized altermagnets
• Nonmagnetic Ground State in RuO${}_2$ Revealed by Muon Spin Rotation
• Three-dimensional mapping of the altermagnetic spin splitting in CrSb
• Absence of altermagnetic spin splitting character in rutile oxide RuO${}_2$
• Predictable gate-field control of spin in altermagnets with spin-layer coupling
• Crystal-symmetry-paired spin-valley locking in a layered room-temperature antiferromagnet
• Majorana corner modes and tunable patterns in an altermagnet heterostructure
• Spin-order dependent anomalous Hall effect and magneto-optical effect in noncollinear antiferromagnets Mn${}_{3}X$N ($X$ = Ga, Zn, Ag, and Ni)
• Observation of Spin Splitting in Room-Temperature Metallic Antiferromagnet CrSb
• Terahertz field-induced nonlinear coupling of two magnon modes in an antiferromagnet
• Terahertz field-driven magnon upconversion in an antiferromagnet
• Two-dimensional fully-compensated Ferrimagnetism
• Field-linear anomalous Hall effect and Berry curvature induced by spin chirality in the kagome antiferromagnet Mn3Sn
• Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO${}_3$
• Non-relativistic spin splitting in compensated magnets that are not altermagnets
• Prototypical topological orbital ferromagnet $\gamma$-FeMn
• Spin-Polarized Antiferromagnetic Spintronics
• Antiferromagnetic magnon spintronic based on non-reciprocal and non-degenerated ultra-fast spin-waves in the canted antiferromagnet α-Fe2O3
• Spin-Splitting Magnetoresistance in Altermagnetic RuO2 Thin Films
• Tuning intrinsic anomalous Hall effect from large to zero in two ferromagnetic states of SmMn2Ge2
• Design strong anomalous Hall effect via spin canting in antiferromagnetic nodal line materials
• Ferroelectric Antiferromagnetic Lifting of Spin-Valley Degeneracy

Cited by in corpus (1)

• Altermagnetism from the viewpoint of chemistry