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Artificial magnetic honeycomb lattices are expected to exhibit a broad and tunable range of novel magnetic phenomena that would be difficult to achieve in natural materials, such as long-range spin ice, entropy-driven magnetic…

介观与纳米尺度物理 · 物理学 2018-02-20 B. Summers , L. Debeer-Schmitt , A. Dahal , A. Glavic , P. Kampschroeder , J. Gunasekera , D. K. Singh

The nature of magnetic correlation at low temperature in two-dimensional artificial magnetic honeycomb lattice is a strongly debated issue. While theoretical researches suggest that the system will develop a novel zero entropy spin solid…

介观与纳米尺度物理 · 物理学 2018-02-20 A. Glavic , B. Summers , A. Dahal , R. J. Kline , W. Van Herck , A. Sukhov , A. Ernst , D. K. Singh

Two-dimensional artificial magnetic honeycomb lattice is at the forefront of research on unconventional magnetic materials. Among the many emergent magnetic phases that are predicted to arise as a function of temperature, the low…

介观与纳米尺度物理 · 物理学 2018-02-20 A. Dahal , B. Summers , D. K. Singh

The emergent concept of magnetic charge quasi-particle provides a new realm to study the evolution of magnetic properties in two-dimensional artificially frustrated magnets. We report on the exploration of magnetic phases due to various…

介观与纳米尺度物理 · 物理学 2021-11-01 George Yumnam , Jiasen Guo , Deepak K. Singh

Two-dimensional artificial magnetic honeycomb lattice is predicted to manifest thermodynamic phase transition to the spin solid order ground state at low temperature. Nonlinear susceptibilities are very sensitive to thermodynamic phase…

介观与纳米尺度物理 · 物理学 2018-06-27 A. Dahal , Y. Chen , B. Summers , D. K. Singh

Spin diode is important prerequisite to practical manifestation of spin electronics. Yet, a functioning magnetic diode at room temperature is still illusive. Here, we reveal diode-type phenomena due to magnetic charge mediated conduction in…

Topological magnetic charges, arising due to the non-vanishing magnetic flux on spin ice vertices, serve as the origin of magnetic monopoles that traverse the underlying lattice effortlessly. Unlike spin ice materials of atomic origin, the…

Emerging new concepts, such as magnetic charge dynamics in two-dimensional magnetic material, can provide novel mechanism for spin based electrical transport at macroscopic length. In artificial spin ice of single domain elements, magnetic…

介观与纳米尺度物理 · 物理学 2021-02-25 Yiyao Chen , George Yumnam , Jiasen Guo , Laura Stingaciu , Piotr Zolnierczuk , Valeria Lauter , Deepak K. Singh

The temperature-magnetic-field phase diagram of the mixed honeycomb triangular lattice system K$_{2}$Mn$_{3}$(VO$_{4}$)$_{2}$CO$_{3}$ is investigated by means of magnetization, heat capacity and neutron scattering measurements. The results…

We model the dynamics of magnetization in an artificial analog of spin ice specializing to the case of a honeycomb network of connected magnetic nanowires. The inherently dissipative dynamics is mediated by the emission, propagation and…

介观与纳米尺度物理 · 物理学 2012-04-16 Yichen Shen , Olga Petrova , Paula Mellado , Stephen Daunheimer , John Cumings , Oleg Tchernyshyov

Two-dimensional high-spin bipartite honeycomb networks, where anisotropy, competing exchange interactions, and spin fluctuations interplay, provide an alternative platform to test theoretical models that distinguish between classical and…

强关联电子 · 物理学 2026-05-05 M. Barik , Q. Faure , F. Damay , J. P. Embs , S. Petit , P. Khuntia

We report the finding of unidirectional electronic properties, analogous to a semiconductor diode, in two-dimensional artificial permalloy honeycomb lattice of ultra-small bond, with a typical length of ~ 12 nm. The unidirectional transport…

介观与纳米尺度物理 · 物理学 2018-03-14 B. Summers , A. Dahal , P. Kampschroeder , J. Gunasekera , D. K. Singh

We present an analytical and numerical study of the Ising model on a bilayer honeycomb lattice including interlayer frustration and coupling with an external magnetic field. First, we discuss the exact $T=0$ phase diagram, where we find…

统计力学 · 物理学 2018-08-08 F. A. Gómez Albarracín , H. D. Rosales , Pablo Serra

The crystal structure, magnetic ground state, and the temperature dependent microscopic spin-spin correlations of the frustrated honeycomb lattice antiferromagnet Na2Co2TeO6 have been investigated by powder neutron diffraction. A three…

强关联电子 · 物理学 2017-03-29 A. K. Bera , S. M. Yusuf , Amit Kumar , C. Ritter

The intriguing interplay between competing degrees of freedom in frustrated magnets can lead to non-trivial magnetic phenomena with exotic low-energy excitations that are highly relevant for addressing some of the fundamental questions in…

强关联电子 · 物理学 2026-03-20 A. Yadav , U. Jena , A. Pradhan , Satish K. , P. Khuntia

Low-dimensional magnetic systems based on honeycomb lattices provide a promising platform for exploring exotic quantum phenomena that emerge from the intricate interplay of competing spin, orbital, lattice, and dipolar degrees of freedom.…

The observation of magnetic diode behavior with ultra-low forward voltage of 5 mV renders new venue for energetically efficient spintronic device research in the unconventional system of two-dimensional permalloy honeycomb lattice. Detailed…

介观与纳米尺度物理 · 物理学 2022-10-10 George Yumnam , Moudip Nandi , Pousali Ghosh , Amjed Abdullah , Mahmoud Almasri , Erik Henriksen , Deepak K. Singh

We analyze the biquadratic bilinear Heisenberg magnet on a honeycomb lattice via Schwinger boson formalism. Due to their vulnerability to quantum fluctuations, non conventional lattices (kagome, triangular and honeycomb for example) have…

强关联电子 · 物理学 2015-06-11 Antônio R. Moura , Afrânio R. Pereira

Quantum magnets based on honeycomb lattices with low-coordination number offer a viable ground to realize exotic emergent quantum excitations and phenomena arising from the interplay between competing magnetic interactions, spin…

强关联电子 · 物理学 2024-11-14 J. Khatua , M. Gomilsek , Kwang-Yong Choi , P. Khuntia

Electrons in artificial lattices enable explorations of the impact of repulsive Coulomb interactions in a tunable system. We have trapped two-dimensional electrons belonging to a gallium arsenide quantum well in a nanofabricated lattice…

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