中文
相关论文

相关论文: Comment on "Elementary formula for the Hall conduc…

200 篇论文

We propose a set of schemes to create and probe fractionally charged excitations of a fractional Chern insulator state in an optical lattice. This includes the creation of localized quasiparticles and quasiholes using both static local…

量子气体 · 物理学 2019-01-03 Mantas Račiūnas , F. Nur Ünal , Egidijus Anisimovas , André Eckardt

We formulate a Chern-Simons composite fermion theory for Fractional Chern Insulators (FCIs), whereby bare fermions are mapped into composite fermions coupled to a lattice Chern-Simons gauge theory. We apply this construction to a Chern…

强关联电子 · 物理学 2018-04-10 Ramanjit Sohal , Luiz H. Santos , Eduardo Fradkin

Hall conductivity for the intrinsic anomalous quantum Hall effect in homogeneous systems is given by the topological invariant composed of the Green function depending on momentum of quasiparticle. This expression reveals correspondence…

介观与纳米尺度物理 · 物理学 2023-06-21 M. Selch , M. Suleymanov , C. X. Zhang , M. A. Zubkov

Thermodynamics of equilibrium states is well established. However, in nonequilibrium few general results are known. One prime and important example is that of Nyquist theorem. It relates equilibrium tiny voltage fluctuations across a…

统计力学 · 物理学 2014-09-24 Navinder Singh

The realization of fractional Chern insulators opens up the possibility of exploring fractionally charged excitations and anyonic statistics in the absence of a magnetic field. One of the central questions is whether lattice-based systems…

介观与纳米尺度物理 · 物理学 2025-12-29 Zexu Li , Wenxuan Wang , Fajie Wang , Zaizhe Zhang , Qiu Yang , Kenji Watanabe , Takashi Taniguchi , X. C. Xie , Jie Wang , Kaihui Liu , Zhida Song , Xiaobo Lu

We generalize the fermion Chern-Simons theory for the Fractional Hall Effect (FQHE) which we developed before, to the case of bilayer systems. We study the complete dynamic response of these systems and predict the experimentally accessible…

凝聚态物理 · 物理学 2009-10-22 Ana Lopez , Eduardo Fradkin

The main point of Clarke and Strong's comment, namely that our results concerning the effect of integrability on the hopping of electrons between chains are probably not related to the notion of coherence proposed in \cite{clarke}, is…

凝聚态物理 · 物理学 2007-05-23 Frederic Mila , Didier Poilblanc

We consider the Hall conductivity of composite fermions in the theory of Halperin, Lee, and Read (HLR). We present a fully quantum mechanical numerical calculation that shows, under suitable conditions, the HLR theory exhibits a…

强关联电子 · 物理学 2019-06-12 Prashant Kumar , Srinivas Raghu , Michael Mulligan

This report reviews recent progress in computing Kubo formulas for general interacting Hamiltonians. The aim is to calculate electric and thermal magneto-conductivities in strong scattering regimes where Boltzmann equation and Hall…

强关联电子 · 物理学 2024-10-04 Assa Auerbach , Sauri Bhattacharyya

Kubo formulas for Hall, transverse thermoelectric and thermal Hall conductivities are simplified into on-shell commutators of degeneracy projected polarizations. The new expressions are computationally economical, and apply to general…

强关联电子 · 物理学 2022-02-02 Noga Bashan , Assa Auerbach

In this paper we provide analytical counting rules for the ground states and the quasiholes of fractional Chern insulators with an arbitrary Chern number. We first construct pseudopotential Hamiltonians for fractional Chern insulators. We…

强关联电子 · 物理学 2014-04-23 Yang-Le Wu , N. Regnault , B. Andrei Bernevig

The observed robustly quantized Hall conductance in quantum Hall systems and Chern insulators (CI) have so far been understood in terms of the topology of isolated systems, which are not coupled to leads. It is assumed that the leads act as…

介观与纳米尺度物理 · 物理学 2025-12-16 Satyam Sinha , Rekha Kumari , Junaid Majeed Bhat , Abhishek Dhar , R. Shankar

The quantum Hall effect in ultra-high mobility GaAs/AlGaAs has been measured and plateaus are found at many different fractions. The resistivity is quantized as \rho =h/ie^2 where i exhibits many different values. The fractions 5/3, 8/5,…

介观与纳米尺度物理 · 物理学 2007-05-23 Keshav N. Shrivastava

The temperature dependences of the Hall coefficient and electrical resistivity recently measured by Moser et al. [Phys. Rev. Lett. 84, 2674 (2000)] in the quasi-one-dimensional organic conductor (TMTSF)2PF6 are quantitatively compared with…

强关联电子 · 物理学 2007-05-23 Victor M. Yakovenko , Anatoley T. Zheleznyak

We show that interacting electrons in a flat Chern band can form, in addition to fractional Chern insulators, a chiral $f$-wave topological superconductor that hosts neutral Majorana fermion edge modes. Superconductivity emerges from an…

超导电性 · 物理学 2025-10-23 Daniele Guerci , Ahmed Abouelkomsan , Liang Fu

The anomalous Hall effect in a multiband tight-binding model is numerically studied taking into account both elastic scattering by disorder and inelastic scattering by the electron-phonon interaction. The Hall conductivity is obtained as a…

强关联电子 · 物理学 2012-07-19 Atsuo Shitade , Naoto Nagaosa

A recently developed formula for the Hall coefficient [A. Auerbach, Phys. Rev. Lett. 121, 66601 (2018)] is applied to nodal line and Weyl semimetals (including graphene), and to spin-orbit split semiconductor bands in two and three…

强关联电子 · 物理学 2021-03-05 Abhisek Samanta , Daniel P. Arovas , Assa Auerbach

The Hall conductance of a two-dimensional electron gas has been studied in a uniform magnetic field. The Hall conductivity is expressed as a sum of two contributions: one corresponding to the classical Drude-Zener formula, and a second…

介观与纳米尺度物理 · 物理学 2009-03-24 Toshifumi Itakura

Quite generally, an insulator is theoretically defined by a vanishing conductivity tensor at the absolute zero of temperature. In classical insulators, such as band insulators, vanishing conductivities lead to diverging resistivities. In…

介观与纳米尺度物理 · 物理学 2015-06-25 M. Hilke , D. Shahar , S. H. Song , D. C. Tsui , Y. H. Xie , Don Monroe

We develop a first quantization description of fractional Chern insulators that is the dual of the conventional fractional quantum Hall (FQH) problem, with the roles of position and momentum interchanged. In this picture, FQH states are…

强关联电子 · 物理学 2015-06-15 Martin Claassen , Ching Hua Lee , Ronny Thomale , Xiao-Liang Qi , Thomas P. Devereaux