English
Related papers

Related papers: Two-Fluid Theory for Spin Superfluidity in Magneti…

200 papers

We consider thermoelectric transport properties of the edge states of a two dimensional topological insulator in a double quantum point contact geometry coupled to two thermally biased reservoirs. Both spin-preserving and spin-flipping…

Mesoscale and Nanoscale Physics · Physics 2016-04-13 Flavio Ronetti , Luca Vannucci , Giacomo Dolcetto , Matteo Carrega , Maura Sassetti

We theoretically investigate laser-induced spin transport in metallic magnetic heterostructures using an effective spin transport description that treats itinerant electrons and thermal magnons on an equal footing. Electron-magnon…

Mesoscale and Nanoscale Physics · Physics 2022-04-27 Maarten Beens , Rembert A. Duine , Bert Koopmans

Superconducting spintronics explores the interplay between superconductivity and magnetism, sparking significant interest in nonunitary superconductors as a platform for novel magneto-superconducting phenomena. However, identifying…

Superconductivity · Physics 2025-01-10 Taiki Matsushita , Takeshi Mizushima , Yusuke Masaki , Satoshi Fujimoto , Ilya Vekhter

We theoretically study the effects of strong magnetoelastic coupling on the transport properties of magnetic insulators. We develop a Boltzmann transport theory for the mixed magnon-phonon modes (magnon polarons) and determine transport…

Mesoscale and Nanoscale Physics · Physics 2017-04-19 Benedetta Flebus , Ka Shen , Takashi Kikkawa , Ken-ichi Uchida , Zhiyong Qiu , Eiji Saitoh , Rembert A. Duine , Gerrit E. W. Bauer

How magnetism affects the Seebeck effect is an important issue widely concerned in the thermoelectric community yet remaining elusive. Based on a thermodynamic analysis of spin degrees of freedom on varied $d$-electron based ferro- and…

Materials Science · Physics 2021-06-15 Peijie Sun , K. Ramesh Kumar , Meng Lyu , Zhen Wang , Junsen Xiang , Wenqing Zhang

The key physics of the spin valve involves spin-polarized conduction electrons propagating between two magnetic layers such that the device conductance is controlled by the relative magnetization orientation of two magnetic layers. Here, we…

Mesoscale and Nanoscale Physics · Physics 2018-04-04 H. Wu , L. Huang , C. Fang , B. S. Yang , C. H. Wan , G. Q. Yu , J. F. Feng , H. X. Wei , X. F. Han

Magnetic monopoles, elusive in high-energy physics, have been realised as emergent quasiparticles in solid-state systems, where their unique properties hold promise for novel spintronic applications. Magnetic monopoles have been invoked in…

We report two non-degenerate magnon modes with opposite spins or chiralities in collinearly antiferromagnetic insulators driven by symmetry-governed anisotropic exchange couplings. The consequent giant spin splitting contributes to spin…

Mesoscale and Nanoscale Physics · Physics 2023-07-20 Qirui Cui , Bowen Zeng , Tao Yu , Hongxin Yang , Ping Cui

We report thermodynamic magnetization measurements of two-dimensional electrons in several high mobility Si metal-oxide-semiconductor field-effect transistors. We provide evidence for an easily polarizable electron state in a wide density…

Strongly Correlated Electrons · Physics 2012-11-29 N. Teneh , A. Yu. Kuntsevich , V. M. Pudalov , M. Reznikov

We present a study on spin-superfluid transport based on an atomistic, classical spin model. Easy-plane ferro- as well as antiferromagnets are considered, which allows for a direct comparison of these two material classes based on the same…

Mesoscale and Nanoscale Physics · Physics 2020-05-20 Martin Evers , Ulrich Nowak

We introduce equations of motion for spin dynamics in a ferromagnetic Bose-Einstein condensate with magnetic dipole-dipole interaction, written using a vector expressing the superfluid velocity and a complex scalar describing the…

Quantum Gases · Physics 2011-06-01 Kazue Kudo , Yuki Kawaguchi

We consider a spin-orbit-coupled two-dimensional electron system under the influence of a thermal gradient externally applied to two attached reservoirs. We discuss the generated voltage bias (charge Seebeck effect), spin bias (spin Seebeck…

Mesoscale and Nanoscale Physics · Physics 2015-03-05 M. I. Alomar , Llorenç Serra , David Sanchez

Spin superfluids enable long-distance spin transport through classical ferromagnets by developing topologically stable magnetic textures. For small spins at low dimensions, however, the topological protection suffers from strong quantum…

Mesoscale and Nanoscale Physics · Physics 2018-10-30 Silas Hoffman , Daniel Loss , Yaroslav Tserkovnyak

We experimentally investigate the dynamics of spin solitary waves (magnetic solitons) in a harmonically trapped, binary superfluid mixture. We measure the in-situ density of each pseudospin component and their relative local phase via an…

Quantum Gases · Physics 2020-07-17 A. Farolfi , D. Trypogeorgos , C. Mordini , G. Lamporesi , G. Ferrari

The influence of an asymmetric in-plane magnetic anisotropy on the thermally activated spin current is studied theoretically for two different systems; (i) the system consisting of a ferromagnetic insulator in a direct contact with a…

Mesoscale and Nanoscale Physics · Physics 2015-12-09 L. Chotorlishvili , Z. Toklikishvili , S. R. Etesami , V. K. Dugaev , J. Barnas , J. Berakdar

Spin superfluidity, coherent spin precession, and magnon BEC are intensively investigated theoretically and experimentally nowadays. Meanwhile, clear definition and differentiation between these related phenomena is needed. It is argued…

Other Condensed Matter · Physics 2013-09-05 E. B. Sonin

The two spin-channel model is generalized to the case of transport of ferromagnetic excitations in electric conductors and insulators. The two channels are defined by reducing the ferromagnetic degrees of freedom to a bivaluated variable,…

Mesoscale and Nanoscale Physics · Physics 2012-11-14 J. -E. Wegrowe

Motivated by the experimental realization of synthetic spin-orbit coupling for ultracold atoms, we investigate the phase diagram of the Bose Hubbard model in a non-abelian gauge field in two dimensions. Using a strong coupling expansion in…

Quantum Gases · Physics 2012-10-09 William S. Cole , Shizhong Zhang , Arun Paramekanti , Nandini Trivedi

The influence of an external magnetic field on the liquid-gas phase transition in Ising, XY, and Heisenberg spin fluid models is studied using a modified mean field theory and Gibbs ensemble Monte Carlo simulations. It is demonstrated that…

Statistical Mechanics · Physics 2009-11-10 W. Fenz , R. Folk , I. M. Mryglod , I. P. Omelyan

We predict the occurrence of Bose-Einstein condensation and superfluidity of dipolar magnetoexcitons for a pair of quasi-two-dimensional spatially separated $\alpha$-${\cal T}_3$ layers. We have solved a two-body problem for an electron and…

Mesoscale and Nanoscale Physics · Physics 2020-10-14 Yonatan Abranyos , Oleg L. Berman , Godfrey Gumbs