$η$-pairing ground states in the non-Hermitian Hubbard model

Author(s): X. Z. Zhang and Z. SongThe introduction of non-Hermiticity has greatly enriched the research field of traditional condensed matter physics and eventually led to a series of discoveries of exotic phenomena. We investigate the effect of non-Hermitian imaginary hoppings on the Hubbard model. The exact bound-pair solution sho...[Phys. Rev. B...

18h

Evidence for the random singlet phase in the honeycomb iridate ${\mathrm{SrIr}}_{2}{\mathrm{O}}_{6}$

Author(s): Pengbo Song, Kejia Zhu, Fan Yang, Yuan Wei, Lu Zhang, Huaixin Yang, Xian-Lei Sheng, Yang Qi, Jiamin Ni, Shiyan Li, Yanchun Li, Guanghan Cao, Zi Yang Meng, Wei Li, Youguo Shi, and Shiliang LiStrong spin-orbital-coupling magnetic systems with the honeycomb structure can provide bond-directional interactions which may result in Kitaev quantum...

18h

Magnetic field asymmetry of transport dynamics in a Coulomb-coupled quantum point contact

Author(s): Jianhong He, Huazhong Guo, Xiaokai Yue, and Jie GaoWe report phase-resolved microwave magnetotransport measurements of a Coulomb-coupled quantum point contact in the edge state regime. We show that the inductive admittance is manifestly asymmetric under reversal of magnetic field, whereas the field-symmetric conductance is observed. Furthermore,...

18h

Optically induced persistent current in carbon nanotubes

Author(s): O. V. Kibis, M. V. Boev, and V. M. KovalevWe demonstrate theoretically that an off-resonant circularly polarized electromagnetic field can induce a persistent current in carbon nanotubes, which corresponds to electron rotation about the nanotube axis. As a consequence, the nanotubes acquire magnetic moment along the axis, which depends on...

18h

Electromagnetic response of topological superconductors

Author(s): M. Stålhammar, M. Stone, Masatoshi Sato, and T. H. HanssonWe resolve several puzzles related to the electromagnetic response of topological superconductors in 3+1 dimensions. In particular we show by an analytical calculation that the interface between a topological and normal superconductor does not exhibit any quantum Hall effect as long...

19h

Nonlinear Hall effect in two-dimensional class-AI metals

Author(s): Zi-Shan Liao, Hong-Hao Zhang, and Zhongbo YanIn a time-reversal invariant system, while the anomalous Hall effect identically vanishes in the linear response regime due to the constraint of time-reversal symmetry on the distribution of Berry curvature, a nonlinear Hall effect can emerge in the second-order response regime if the inversion...

19h

Atomic dynamics of metallic glass melts ${\mathrm{La}}_{50}{\mathrm{Ni}}_{15}{\mathrm{Al}}_{35}$ and ${\mathrm{Ce}}_{70}{\mathrm{Cu}}_{19}{\mathrm{Al}}_{11}$ studied by quasielastic neutron scattering

Author(s): Peng Luo, Abhishek Jaiswal, Yanqin Zhai, Zhikun Cai, Nathan P. Walter, Long Zhou, Dawei Ding, Ming Liu, Rebecca Mills, Andrey Podlesynak, Georg Ehlers, Antonio Faraone, Haiyang Bai, Weihua Wang, and Y ZBy employing quasielastic neutron scattering, we studied the atomic-scale relaxation dynamics and transport mechanism of La50Ni15Al35 and...

19h

Entropic broadening of the spin-crossover pressure in ferropericlase

Author(s): Kaishuai Yang, Xianlong Wang, Jie Zhang, Ya Cheng, Chuanguo Zhang, Zhi Zeng, and Haiqing LinThe pressure-induced spin crossover of iron in ferropericlase, the Fe-bearing MgO, is a key to understanding the seismological observations in the lower mantle. However, the experimentally measured spin-crossover pressure zone (SCPZ) shows large variations,...

19h

Beyond Ohm's law: Bernoulli effect and streaming in electron hydrodynamics

Author(s): Aaron Hui, Vadim Oganesyan, and Eun-Ah KimRecent observations of nonlocal transport in ultraclean two-dimensional materials raised the tantalizing possibility of accessing hydrodynamic correlated transport of a many-electron state. However, it has been pointed out that nonlocal transport can also arise from impurity scattering rather than...

19h

Role of exchange splitting and ligand-field splitting in tuning the magnetic anisotropy of an individual iridium atom on $\mathrm{Ta}{\mathrm{S}}_{2}$ substrate

Author(s): Shiming Yan, Wen Qiao, Deyou Jin, Xiaoyong Xu, Wenbo Mi, and Dunhui WangIn this work, using first-principles calculation we investigate the magnetic anisotropy (MA) of single-atom iridium (Ir) on TaS2 substrate. We find that the strength and direction of MA in the Ir adatom can be tuned by strain. The MA arises from two sources, namely the...

19h