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We introduce a new method to analysis the many-body problem with disorder. The method is an extension of the real space renormalization group based on the operator product expansion. We consider the problem in the presence of interaction,…

强关联电子 · 物理学 2009-10-31 D. Schmeltzer

Josephson junctions fabricated on the surface of three-dimensional topological insulators (TI) show a few unusual properties distinct from conventional Josephson junctions. In these devices, the Josephson coupling and the supercurrent are…

超导电性 · 物理学 2013-01-18 Christopher T. Olund , Erhai Zhao

Recently has been investigated that the ground-state wavefunction of the one dimensional quantum spin-1/2 chain models is multifractal in general with non-trivial fractal dimension. We are studying this phenomena for the quantum Ising chain…

无序系统与神经网络 · 物理学 2020-01-08 Dimitrios Voliotis

Many-body localization (MBL) hinders the thermalization of quantum many-body systems in the presence of strong disorder. In this work, we study the MBL regime in bond-disordered spin-1/2 XXZ spin chain, finding the multimodal distribution…

无序系统与神经网络 · 物理学 2025-02-12 Adith Sai Aramthottil , Piotr Sierant , Maciej Lewenstein , Jakub Zakrzewski

The method of iterated conformal maps allows to study the harmonic measure of Diffusion Limited Aggregates with unprecedented accuracy. We employ this method to explore the multifractal properties of the measure, including the scaling of…

统计力学 · 物理学 2009-11-07 Mogens H. Jensen , Anders Levermann , Joachim Mathiesen , Itamar Procaccia

We theoretically investigate the many-body localization phase transition in a one-dimensional Ising spin chain with random long-range spin-spin interactions, $V_{ij}\propto\left|i-j\right|^{-\alpha}$, where the exponent of the interaction…

量子气体 · 物理学 2016-12-28 Haoyuan Li , Jia Wang , Xia-Ji Liu , Hui Hu

In quantum systems, signatures of multifractality are rare. They have been found only in the multiscaling of eigenfunctions at critical points. Here we demonstrate multifractality in the magnetic-field-induced universal conductance…

介观与纳米尺度物理 · 物理学 2018-04-13 Kazi Rafsanjani Amin , Samriddhi Sankar Ray , Nairita Pal , Rahul Pandit , Aveek Bid

We consider dissipative quantum phase transitions in Josephson junction arrays and show that the disordered phase in this extended system can be viewed as an unusual floating phase in which the states of local $(0+1)$-dimensional elements…

统计力学 · 物理学 2007-05-23 Sumanta Tewari , John Toner , Sudip Chakravarty

Triplet supercurrents in multilayer ferromagnetic Josephson junctions with misaligned magnetization can penetrate thicker ferromagnetic barriers compared to the singlet component. Although the static properties of these junctions have been…

超导电性 · 物理学 2018-10-31 D. Massarotti , N. Banerjee , R. Caruso , G. Rotoli , M. G. Blamire , F. Tafuri

Mesoscopic fluctuations and correlations of the local density of states are studied near metal-insulator transitions in disordered interacting electronic systems. We show that the multifractal behavior of the local density of states…

介观与纳米尺度物理 · 物理学 2015-07-30 I. S. Burmistrov , I. V. Gornyi , A. D. Mirlin

The Josephson junction is a building block of quantum circuits. Its behavior, well understood when treated as an isolated entity, is strongly affected by coupling to an electromagnetic environment. In 1983, Schmid predicted that a Josephson…

To study the properties of frustrated two-dimensional Josephson junction arrays near incommensurability, we examine the current-voltage characteristics of a square proximity-coupled Josephson junction array at a sequence of frustrations…

超导电性 · 物理学 2007-05-23 In-Cheol Baek , Young-Je Yun , Mu-Yong Choi

We report a new attractive critical point occurring in the Anderson localization scaling flow of symplectic models on fractals. The scaling theory of Anderson localization predicts that in disordered symplectic two-dimensional systems weak…

介观与纳米尺度物理 · 物理学 2016-10-19 Doru Sticlet , Anton Akhmerov

Josephson junctions, as pivotal components of modern technologies such as superconducting quantum computing, owe their prominence to their unique nonlinear properties at low temperatures. Despite their extensive use in static…

超导电性 · 物理学 2025-01-06 Sajjad Taravati

We identify the many-body counterpart of flat bands, which we call many-body caging, as a general mechanism for non-equilibrium phenomena such as a novel type of glassy eigenspectrum order and many-body Rabi oscillations in the time domain.…

量子气体 · 物理学 2025-04-18 Tom Ben-Ami , Markus Heyl , Roderich Moessner

We study the energy and spatial dependence of the local density of states in a superconductor--correlated-metal--superconductor Josephson junction, where the correlated metal is a non-Fermi liquid (described by the Falicov-Kimball model).…

超导电性 · 物理学 2009-11-07 Branislav K. Nikolic , J. K. Freericks , P. Miller

Andreev bound states trapped in a multi-terminal Josephson junction (JJ) can be assigned a synthetic band topology owing to their periodic dependence on the Josephson phase bias. We demonstrate that the BdG symmetry adds a twist to this…

介观与纳米尺度物理 · 物理学 2023-09-28 Aabir Mukhopadhyay , Udit Khanna , Sourin Das

Josephson junctions are the most prominent nondissipative and at the same time nonlinear elements in superconducting circuits allowing Cooper pairs to tunnel coherently between two superconductors separated by a tunneling barrier. Due to…

介观与纳米尺度物理 · 物理学 2016-09-07 Daniel Otten , Sebastian Rubbert , Jascha Ulrich , Fabian Hassler

We demonstrate that the recent observations of spatial oscillations in the energy position of the superconducting coherence peaks in the cuprate, transition metal dichalcogenide, iron-based and heavy-fermion superconductors are consistent…

超导电性 · 物理学 2025-12-03 Alyson Laskowski , Jasmin Bedow , Dirk K. Morr

We study the entanglement spectrum in the many body localizing and thermalizing phases of one and two dimensional Hamiltonian systems, and periodically driven `Floquet' systems. We focus on the level statistics of the entanglement spectrum…

统计力学 · 物理学 2016-05-25 Scott D. Geraedts , Rahul Nandkishore , Nicolas Regnault