323 citations · 1.2k across the 36 of their papers we have counts for
19 papers · 1 filter
Density-wave order enhances the phonon thermal Hall effect in a trilayer nickelate
Qiaochao Xiang, Enkang Zhang, Xiaokang Li +6
Ruddlesden--Popper nickelates have emerged as a promising platform for high-temperature superconductivity, yet the role of lattice degrees of freedom in their correlated normal sta…
Multiband transport hierarchy and large Nernst effect in EuAuBi: Establishing a Nernst scaling for asymmetric multiband systems
Weimin Quan, Xiaodong Guo, Lingxiao Zhao +4
In correlated materials, coexisting pockets of vastly different carrier densities raise two fundamental questions: which pocket governs the various transport coefficients, and does…
Hydrodynamics of the viscous electron fluid in cadmium
Xiaodong Guo, Xiaokang Li, Benoît Fauqué +4
Thanks to electron-electron (-) collisions conserving momentum, metallic electron fluids are viscous. Yet, this viscosity is rarely detectable in bulk transport. Here, we rep…
Phonon Thermal Hall Effect: The Roles of Disorder, Annealing, and Metallic Contacts
Qiaochao Xiang, Xiaokang Li, Xiaodong Guo +2
The phonon thermal Hall effect (THE) is a ubiquitous yet poorly understood phenomenon in insulators. Its microscopic origin remains debated, partly due to significant sample-depend…
Angle-dependent planar thermal Hall effect by quasi-ballistic phonons in black phosphorus
Xiaokang Li, Xiaodong Guo, Zengwei Zhu +1
The origin of the phonon thermal Hall effect in insulators is a matter of ongoing debate. The large amplitude of the signal in an elemental non-magnetic solid, such as black phosph…
Tuning the BCS-BEC crossover of electron-hole pairing with pressure
Yuhao Ye, Jinhua Wang, Pan Nie +5
In graphite, a moderate magnetic field confines electrons and holes into their lowest Landau levels. In the extreme quantum limit, two insulating states with a dome-like field depe…
Thermodynamic origin of the phonon Hall effect in a honeycomb antiferromagnet
Qingkai Meng, Xiaokang Li, Jie Liu +5
The underlying mechanism of the thermal Hall effect (THE) generated by phonons in a variety of insulators is yet to be identified. Here, we report on a sizeable thermal Hall conduc…
Onsager reciprocal relation between anomalous transverse coefficients of an anisotropic antiferromagnet
Xiaodong Guo, Xiaokang Li, Zengwei Zhu +1
Whenever two irreversible processes occur simultaneously, time-reversal symmetry of microscopic dynamics gives rise, on a macroscopic level, to Onsager's reciprocal relations, whic…
Tuning the anomalous Nernst and Hall effects with shifting the chemical potential in Fe-doped and Ni-doped CoSnS
Jie Liu, Linchao Ding, Liangcai Xu +3
CoSnS is believed to be a magnetic Weyl semimetal. It displays large anomalous Hall, Nernst and thermal Hall effects with a remarkably large anomalous Hall angle. Here,…
The phonon thermal Hall angle in black phosphorus
Xiaokang Li, Yo Machida, Alaska Subedi +3
The origin of phonon thermal Hall Effect (THE) observed in a variety of insulators is yet to be identified. Here, we report on the observation of a thermal Hall conductivity in a n…
Magnetostriction, piezomagnetism and domain nucleation in a kagome antiferromagnet
Qingkai Meng, Jianting Dong, Pan Nie +9
Whenever the elastic energy of a solid depends on magnetic field, there is a magnetostrictive response. Field-linear magnetostriction implies piezomagnetism and vice versa. Here, w…
Phonon drag thermal Hall effect in metallic strontium titanate
Shan Jiang, Xiaokang Li, Benoît Fauqué +1
SrTiO, a quantum paralectric, displays a detectable phonon thermal Hall effect (THE). Here we show that the amplitude of THE is extremely sensitive to stoichiometry. It drastic…
The free energy of twisting spins in MnSn
Xiaokang Li, Shan Jiang, Qingkai Meng +4
The magnetic free energy is usually quadratic in magnetic field and depends on the mutual orientation of the magnetic field and the crystalline axes. Tiny in magnitude, this magnet…
Critical point for Bose-Einstein condensation of excitons in graphite
Jinhua Wang, Pan Nie, Xiaokang Li +4
An exciton is an electron-hole pair bound by attractive Coulomb interaction. Short-lived excitons have been detected by a variety of experimental probes in numerous contexts. An ex…
Anomalous transverse response of CoMnGa and universality of the room-temperature ratio across topological magnets
Liangcai Xu, Xiaokang Li, Linchao Ding +6
The off-diagonal (electric, thermal and thermoelectric) transport coefficients of a solid can acquire an anomalous component due to the non-trivial topology of the Bloch waves. We…
Phonon thermal Hall effect in strontium titanate
Xiaokang Li, Benoît Fauqué, Zengwei Zhu +1
It has been known for more than a decade that phonons can produce an off-diagonal thermal conductivity in presence of magnetic field. Recent studies of thermal Hall conductivity, $…
Magnetic exchange induced Weyl state in a semimetal EuCd2Sb2
Hao Su, Benchao Gong, Wujun Shi +18
Magnetic Weyl semimetals (WSMs) bearing long-time pursuing are still very rare. We herein identified magnetic exchange induced Weyl state in EuCd2Sb2, a semimetal in type IV magnet…
Chiral domain walls of MnSn and their memory
Xiaokang Li, Clément Collignon, Liangcai Xu +8
Magnetic domain walls are topological solitons whose internal structure is set by competing energies which sculpt them. In common ferromagnets, domain walls are known to be of eith…
Finite-temperature violation of the anomalous transverse Wiedemann-Franz law
Liangcai Xu, Xiaokang Li, Xiufang Lu +7
The Wiedemann-Franz (WF) law links the ratio of electronic charge and heat conductivity to fundamental constants. It has been tested in numerous solids, but the extent of its relev…