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Two-dimensional colloidal suspensions exposed to periodic external fields exhibit a variety of molecular crystalline phases. There two or more colloids assemble at lattice sites of potential minima to build new structural entities, referred…

Soft Condensed Matter · Physics 2009-11-11 Andreja Sarlah , Erwin Frey , Thomas Franosch

A combination of small-cluster exact-diagonalization calculations and a well-controlled approximative method is used to examine the ground-state phase diagrams of the spin-one-half Falicov-Kimball model extended by the spin-dependent…

Strongly Correlated Electrons · Physics 2015-06-25 Martin Zonda

In this paper an effective integrable non-linear model describing the electron spin dynamics in a deformable helical molecule with weak spin-orbit coupling is presented. Non-linearity arises from the electron-lattice interaction and it…

Exactly Solvable and Integrable Systems · Physics 2018-02-14 P. Albares , E. Diaz , J. M. Cervero , F. Dominguez-Adame , E. Diez , P. G. Estevez

Chiral magnets, such as MnSi, display a rich finite temperature phase diagram in an applied magnetic field. The most unusual of the phases encountered is the so called A-phase characterized by a triangular lattice of skyrmion tubes. Its…

Strongly Correlated Electrons · Physics 2013-11-27 Stefan Buhrandt , Lars Fritz

Structure and properties of two-dimensional spiral textures in helical ferromagnets have been studied. In these magnetic mediums have been predicted new types of periodical structures - spiral lattices.

Strongly Correlated Electrons · Physics 2013-01-03 A. B. Borisov , F. N. Rybakov

The phase diagram of the monoaxial chiral helimagnet as a function of temperature (T ) and magnetic field with components perpendicular (H x ) and parallel (H z ) to the chiral axis is theoretically studied via the variational mean field…

Strongly Correlated Electrons · Physics 2018-02-06 Victor Laliena , Javier Campo , Yusuke Kousaka

Helical magnetic structures and its responses to external magnetic fields in Yb(Ni$_x$Cu$_{1-x}$)$_3$Al$_9$, with a chiral crystal structure of the space group $R32$, have been investigated by resonant X-ray diffraction. It is shown that…

We thoroughly study the zero temperature properties of monoaxial chiral spin systems under a tilted magnetic field. The magnetic phase diagram includes two kinds of continuous phase transitions and one discontinuous phase transition. We…

Strongly Correlated Electrons · Physics 2020-06-17 Yusuke Masaki

Pursuing topological phases in natural and artificial materials is one of the central topics in modern physical science and engineering. In classical magnetic systems, spin waves (or magnons) and magnetic solitons (such as domain wall,…

Mesoscale and Nanoscale Physics · Physics 2021-06-02 Z. -X. Li , Yunshan Cao , Peng Yan

The series solution to Laplace's equation in a helical coordinate system is derived and refined using symmetry and chirality arguments. These functions and their more commonplace counterparts are used to model solenoidal magnetic fields via…

Instrumentation and Detectors · Physics 2020-07-10 Brian Pollack , Ryan Pellico , Cole Kampa , Henry Glass , Michael Schmitt

We obtain an almost complete understanding of the mean-field phase diagram of the two-dimensional Hubbard model on a square lattice with a sizable next-nearest neighbor hopping and a moderate interaction strength. In particular, we clarify…

Strongly Correlated Electrons · Physics 2024-07-02 Robin Scholle , Walter Metzner , Demetrio Vilardi , Pietro M. Bonetti

Propulsion of the chiral magnetic nanomotors powered by a rotating magnetic field is in the focus of the modern biomedical applications. This technology relies on strong interaction of dynamic and magnetic degrees of freedom of the system.…

Soft Condensed Matter · Physics 2013-12-13 Konstantin I. Morozov , Alexander M. Leshansky

Cholesteric Liquid Crystals (CLCs), subject to externally applied magnetic fields and confined between two parallel planar surfaces with strong homeotropic anchoring conditions, are found to undergo transitions to different types of…

Soft Condensed Matter · Physics 2019-11-28 G. De Matteis , L. Martina , C. Naya , V. Turco

Helimagnets exhibit noncollinear spin arrangements characterized by a periodic helical modulation, giving rise to emergent chiral properties. These materials have attracted significant interest due to their potential applications in…

The lack of inversion symmetry in the crystal lattice of magnetic materials gives rise to complex non-collinear spin orders through interactions of relativistic nature, resulting in interesting physical phenomena, such as emergent…

In a magnetic texture, the spin of a conduction electron is forced to be aligned to the localized moment. As a result, the topology of the magnetic texture affects the electron dynamics in nontrivial ways. A representative example is the…

Mesoscale and Nanoscale Physics · Physics 2022-12-22 Hidetoshi Masuda , Takeshi Seki , Jun-ichiro Ohe , Yoichi Nii , Koki Takanashi , Yoshinori Onose

The molecules in lyotropic membranes are typically aligned with the surface normal. When these molecules are chiral, there is a tendency for the molecular direction to twist. These competing effects can reach a compromise by producing…

Condensed Matter · Physics 2009-10-28 Randall D. Kamien , T. C. Lubensky

Cubic chiral magnets exhibit a remarkable diversity of two-dimensional topological magnetic textures, including skyrmions. However, the experimental confirmation of topological states localized in all three spatial dimensions remains…

Mesoscale and Nanoscale Physics · Physics 2025-07-11 Vladyslav M. Kuchkin , Nikolai S. Kiselev , Filipp N. Rybakov , Igor S. Lobanov , Stefan Blügel , Valery M. Uzdin

We consider a classical Heisenberg model on the kagom\'{e} and the square kagom\'{e} lattice, where at zero magnetic field non-coplanar cuboctahedral ground states with twelve sublattices exist if suitable exchange couplings are introduced…

Strongly Correlated Electrons · Physics 2024-04-26 Johannes Richter , Heinz-Jürgen Schmidt , Jürgen Schnack

The ever-increasing amount of data from ubiquitous smart devices fosters data-centric and cognitive algorithms. Traditional digital computer systems have separate logic and memory units, resulting in a huge delay and energy cost for…

Applied Physics · Physics 2025-03-17 Qiming Shao , Zhongrui Wang , Yan Zhou , Shunsuke Fukami , Damien Querlioz , Leon O. Chua