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Stripe antiferromagnetism in van der Waals metal HoTe3 decoupled from charge density wave order
Weiyi Yun, Ryota Nakano, Ryo Misawa +10
The () family of layered van der Waals (vdW) compounds hosts coexisting magnetic and charge density wave (CDW) orders, yet the interplay bet…
Successive orthorhombic distortions in kagome metals by molecular orbital formation
Ryo Misawa, Shunsuke Kitou, Rinsuke Yamada +12
The kagome lattice, with its inherent frustration, hosts a plethora of exotic phenomena, including the emergence of charge density wave order. The high rotational sym…
Nanometric skyrmion lattice from anisotropic exchange interactions in a centrosymmetric host
Max Hirschberger, Satoru Hayami, Yoshinori Tokura
Skyrmion formation in centrosymmetric magnets without Dzyaloshinskii-Moriya interactions was originally predicted from unbiased numerical techniques. However, no attempt has yet be…
Triangular lattice magnet GdGa with short-period spin cycloids and possible skyrmion phases
Priya R. Baral, Nguyen Duy Khanh, Masaki Gen +6
The two-dimensional triangular lattice (TAL) is a model system of magnetic frustration and competing interactions, where skyrmion spin vortices can be induced by a vertical magneti…
Perfectly harmonic spin cycloid and multi- textures in the Weyl semimetal GdAlSi
Ryota Nakano, Rinsuke Yamada, Juba Bouaziz +18
A fundamental question concerns how topological electronic states are influenced by many-body correlations, and magnetic Weyl semimetals represent an important material platform to…
Metallic -wave magnet with commensurate spin helix
Rinsuke Yamada, Max T. Birch, Priya R. Baral +20
Antiferromagnetic states with spin-split electronic structure give rise to novel spintronic, magnonic, and electronic phenomena despite (near-) zero net magnetization. The simplest…
Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet
Max Hirschberger, Bertalan G. Szigeti, Mamoun Hemmida +15
Skyrmion lattices (SkL) in centrosymmetric materials typically have a magnetic period on the nanometer-scale, so that the coupling between magnetic superstructures and the underlyi…
Polarized neutron scattering study on the centrosymmetric skyrmion host material Gd2PdSi3
Jiwon Ju, Hiraku Saito, Takashi Kurumaji +6
We have investigated magnetic structures of the centrosymmetrric skyrmion material Gd2PdSi3 by means of polarized neutron scattering near zero field with an isotope-160Gd-enriched…
Kagome lattice promotes chiral spin fluctuations
Kamil K. Kolincio, Max Hirschberger, Jan Masell +3
Magnetic materials with tilted electron spins often exhibit conducting behavior that cannot be explained from semiclassical theories without invoking fictitious (emergent) electrom…
The planar thermal Hall conductivity in the Kitaev magnet α-RuCl3
Peter Czajka, Tong Gao, Max Hirschberger +6
We report detailed measurements of the Onsager-like planar thermal Hall conductivity in -RuCl, a spin-liquid candidate of topical interest. With the thermal current…
Oscillations of the thermal conductivity observed in the spin-liquid state of -RuCl
Peter Czajka, Tong Gao, Max Hirschberger +6
In the class of materials called spin liquids, a magnetically ordered state cannot be attained even at milliKelvin temperatures because of conflicting constraints on each spin (for…
Geometrical Hall effect and momentum-space Berry curvature from spin-reversed band pairs
Max Hirschberger, Yusuke Nomura, Hiroyuki Mitamura +10
When nanometric, noncoplanar spin textures with scalar spin chirality (SSC) are coupled to itinerant electrons, they endow the quasiparticle wavefunctions with a gauge field, terme…
High-field depinned phase and planar Hall effect in skyrmion-host GdPdSi
Max Hirschberger, Taro Nakajima, Markus Kriener +11
For the skyrmion-hosting intermetallic GdPdSi with centrosymmetric hexagonal lattice and triangular net of rare earth sites, we report a thorough investigation of the magne…
Topological Nernst effect of the two-dimensional skyrmion lattice
Max Hirschberger, Leonie Spitz, Takuya Nomoto +12
The topological Hall effect (THE) and its thermoelectric counterpart, the topological Nernst effect (TNE), are hallmarks of the skyrmion lattice phase (SkL). We observed the giant…
Ordering phenomena of spin trimers accompanied by large geometrical Hall effect
Shang Gao, Max Hirschberger, Oksana Zaharko +10
The wavefuntion of conduction electrons moving in the background of a non-coplanar spin structure can gain a quantal phase - Berry phase - as if the electrons were moving in a stro…
Enhanced thermal Hall conductivity below 1 Kelvin in the pyrochlore magnet YbTiO
Max Hirschberger, Peter Czajka, S. M. Koohpayeh +2
In this letter, we report the gigantic thermal Hall effect in the low-field correlated-paramagnetic state of the frustrated pyrochlore YbTiO. We observed a rec…
Skyrmion phase and competing magnetic orders on a breathing kagome lattice
Max Hirschberger, Taro Nakajima, Shang Gao +13
Magnetic skyrmion textures are realized mainly in non-centrosymmetric, e.g. chiral or polar, magnets. Extending the field to centrosymmetric bulk materials is a rewarding challenge…
Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
Takashi Kurumaji, Taro Nakajima, Max Hirschberger +7
Geometrically frustrated magnets provide abundant opportunities for discovering complex spin textures, which sometimes yield unconventional electromagnetic responses in correlated…
The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
Max Hirschberger, Satya Kushwaha, Zhijun Wang +5
The Dirac and Weyl semimetals are unusual materials in which the nodes of the bulk states are protected against gap formation by crystalline symmetry. The chiral anomaly~\cite{Adle…
The thermal Hall effect of spin excitations in a Kagome magnet
Max Hirschberger, Robin Chisnell, Young S. Lee +1
At low temperatures, the thermal conductivity of spin excitations in a magnetic insulator can exceed that of phonons. However, because they are charge neutral, the spin waves are n…
Thermal Hall conductivity in the frustrated pyrochlore magnet Tb2Ti2O7
Max Hirschberger, Jason W. Krizan, R. J. Cava +1
In a ferromagnet, the spin excitations are the well-studied magnons. In frustrated quantum magnets, long-range magnetic order fails to develop despite a large exchange coupling bet…
Evidence for massive bulk Dirac Fermions in PbSnSe from Nernst and thermopower experiments
Tian Liang, Quinn Gibson, Jun Xiong +4
The lead chalcogenides (Pb,Sn)Te and (Pb,Sn)Se are the first examples of topological crystalline insulators (TCI) predicted \cite{Fu,Hsieh} (and confirmed \cite{Hasan,Story,Takahas…