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We predict unidirectional magnetoresistance effects arising in a bilayer composed of a nonmagnetic metal and a ferromagnetic insulator, whereby both longitudinal and transverse resistances vary when the direction of the applied electric…

介观与纳米尺度物理 · 物理学 2025-03-10 M. Mehraeen , Pengtao Shen , Steven S. -L. Zhang

We consider electrons in a quantum wire interacting via a long-range Coulomb potential screened by a nearby gate. We focus on the quantum phase transition from a strictly one-dimensional to a quasi-one-dimensional electron liquid, that is…

介观与纳米尺度物理 · 物理学 2011-04-27 Tobias Meng , Mehul Dixit , Markus Garst , Julia S. Meyer

We recalculate the two loop corrections in the background heat bath using real time formalism. The procedure of the integrations of loop momenta with dependence on finite temperature before the momenta without it, has been followed. We…

高能物理 - 唯象学 · 物理学 2015-05-28 Mahnaz Q. Haseeb , Samina S. Masood

We study the development of electron-electron correlations in circular quantum dots as the density is decreased. We consider a wide range of both electron number, N<=20, and electron gas parameter, r_s<18, using the diffusion quantum Monte…

介观与纳米尺度物理 · 物理学 2009-11-13 Amit Ghosal , A. D. Guclu , C. J. Umrigar , Denis Ullmo , Harold U. Baranger

Connecting short time microscopic dynamics with long time hydrodynamics in strongly correlated quantum systems is one of the outstanding questions. In particular, it is very difficult to determine various hydrodynamic coefficients like the…

统计力学 · 物理学 2020-05-20 Jonathan Wurtz , Anatoli Polkovnikov

The dominant source of decoherence for an electron spin in a quantum dot is the hyperfine interaction with the surrounding bath of nuclear spins. The decoherence process may be slowed down by subjecting the electron spin to suitable…

介观与纳米尺度物理 · 物理学 2017-08-23 Wenxian Zhang , V. V. Dobrovitski , Lea F. Santos , Lorenza Viola , B. N. Harmon

We consider 2d QFTs as relevant deformations of CFTs in the thermodynamic limit. Using causality and KPZ universality, we place a lower bound on the timescale characterizing the onset of hydrodynamics. The bound is determined parametrically…

高能物理 - 理论 · 物理学 2022-04-20 Luca V. Delacretaz , A. Liam Fitzpatrick , Emanuel Katz , Matthew T. Walters

Electron pairing is a rare phenomenon appearing only in a few unique physical systems; e.g., superconductors and Kondo-correlated quantum dots. Here, we report on an unexpected, but robust, electron "pairing" in the integer quantum Hall…

介观与纳米尺度物理 · 物理学 2019-06-26 Hyungkook Choi , Itamar Sivan , Amir Rosenblatt , Moty Heiblum , Vladimir Umansky , Diana Mahalu

We consider charge fluctuations in a quantum dot coupled to an interacting one-dimensional electron liquid. We find the behavior of this system to be similar to the multichannel pseudogap Kondo model. By tuning the coupling between the dot…

强关联电子 · 物理学 2007-05-23 Eugene H. Kim , Yong Baek Kim , C. Kallin

In ultra-clean 2d materials electron viscosity is as important as Ohmic dissipation and electron transport exhibits hydrodynamic features. Using a simple framework of Brinkman equations we find that hydrodynamic electron flows exhibit a…

介观与纳米尺度物理 · 物理学 2026-01-27 Jarosław Pawłowski , Piotr Surówka , Konstantin Zarembo

Interaction of solid state qubits with environmental degrees of freedom strongly affects the qubit dynamics, and leads to decoherence. In quantum information processing with solid state qubits, decoherence significantly limits the…

介观与纳米尺度物理 · 物理学 2010-02-26 Luca Chirolli , Guido Burkard

Light scattered by a regular structure of atoms can exhibit interference signatures, similar to the classical double-slit. These first-order interferences, however, vanish for strong light intensities, restricting potential applications.…

量子物理 · 物理学 2009-11-13 M. Macovei , J. Evers , G. -x. Li , C. H. Keitel

We present studies of the electron transport and circular currents induced by the bias voltage and the magnetic flux threading a ring of three quantum dots coupled with two electrodes. Quantum interference of electron waves passing through…

介观与纳米尺度物理 · 物理学 2019-05-29 Bogdan R. Bułka , Jakub Łuczak

In this paper we apply quantum hydrodynamics (QHD) to study the quantum evolution of a system of spinning particles and particles that have the electric dipole moments EDM in the rotating reference frame. The method presented is based on…

等离子体物理 · 物理学 2016-12-21 Mariya Iv. Trukhanova

Beginning from the semiclassical Hamiltonian, the Fermi pressure and Bohm potential for the quantum hydrodynamics application (QHD) at finite temperature are consistently derived in the framework of the local density approximation with the…

等离子体物理 · 物理学 2018-04-18 Zh. A. Moldabekov , M. Bonitz , T. S. Ramazanov

The quantum interference effect on the quasiparticle density of states (DOS) is studied with the diagrammatic technique in two-dimensional d-wave superconductors with dilute nonmagnetic impurities both near the Born and near the unitary…

超导电性 · 物理学 2007-05-23 Y. H. Yang , Y. G. Wang , M. Liu , D. Y. Xing

It has been established that the Coulomb interactions can transform the electron gas into a viscous fluid. This fluid is realized in a number of platforms, including graphene and two-dimensional semiconductor heterostructures. The defining…

介观与纳米尺度物理 · 物理学 2023-10-17 Aydin Cem Keser , Oleg Sushkov

We characterize the low-lying excitations of a quantum vortex in a quasi-two-dimensional Bose-Einstein condensate (BEC) using the standard definition of the density of states (DOS) and a modified version that is sensitive to complementary…

量子气体 · 物理学 2022-11-23 João E. H. Braz , P. Ribeiro , H. Terças

We have extended previous kinetic results to compute the exchange correction to the electrostatic electron susceptibility for arbitrary frequencies and wavenumbers in the low temperature limit. This has allowed us to make a general…

等离子体物理 · 物理学 2019-10-03 Gert Brodin , Robin Ekman , Jens Zamanian

Recent experiments have observed hints of hydrodynamic electron flow in a number of materials, not all of which have an isotropic Fermi surface. We revisit these experiments in $\mathrm{PdCoO}_2$, a quasi-two-dimensional material whose…

强关联电子 · 物理学 2019-07-03 Caleb Q. Cook , Andrew Lucas