Article
Materials Science, Multidisciplinary
Hao Tang, Yong Li, Junyao Yin, Juekuan Yang, Dongyan Xu, Deyu Li
Summary: We report on diverse transport properties observed in NbSe3 nanowires of dilute Ni concentrations, including metallic behavior with negative absolute resistance, switching transition, and metal-insulator transitions. The resistance of nonmetallic samples follows power laws, but the anomalous features of charge density wave transitions are still present. These transport behaviors are apparently caused by variations of potential along the conducting channel due to different kinds of nonuniformities.
MATERIALS TODAY PHYSICS
(2022)
Article
Multidisciplinary Sciences
Yiping Wang, Ioannis Petrides, Grant McNamara, Md Mofazzel Hosen, Shiming Lei, Yueh-Chun Wu, James L. Hart, Hongyan Lv, Jun Yan, Di Xiao, Judy J. Cha, Prineha Narang, Leslie M. Schoop, Kenneth S. Burch
Summary: The observation of the Higgs boson confirms the standard model of particle physics and further research on anomalies relies on the axial Higgs mode. This study discovers the axial Higgs mode in the charge density wave system RTe3 using quantum interference techniques, providing insights into the quantum properties of collective modes.
Article
Physics, Multidisciplinary
D. Krstovska, E. S. Choi, E. Steven
Summary: Experimental study on the interlayer Seebeck effect of the multiband organic conductor alpha-(BEDT-TTF)(2)KHg(SCN)(4) reveals the existence of a third CDW state with properties similar to the CDW0 state, developing above the kink field. Additionally, the development of this state occurs at temperatures below 3 K and at field orientations around the second AMRO maximum. These findings, presented based on pure Seebeck effect measurements, provide a detailed understanding of the complex nature of the CDW order in this material and identify other states and transitions that have not been reported before.
Article
Physics, Multidisciplinary
G. G. Guzman-Verri, C. H. Liang
Summary: We used the self-consistent phonon approximation to investigate the effects of flexoelectric interaction on ferroelectric materials and found that long-range modulated order is unstable at all temperatures. This study has important implications for nearly ferroelectric materials such as SrTiO3 and KTaO3, and suggests that these materials may be melted versions of an underlying modulated state dominated by nonzero momentum thermal fluctuations.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Danica Krstovska, Eun Sang Choi, Eden Steven
Summary: We have observed a large Nernst effect in the charge density wave state of the multiband organic metal alpha-(BEDT-TTF)(2)KHg(SCN)(4). The energy relaxation processes and momentum relaxation processes play significant roles in this Nernst signal. The presence of carrier mobility is indicated by the momentum relaxation dynamics in the low field CDW state, while it is absent in the high-field CDW state where only phonon drag effect and electron-phonon interactions contribute to the transverse thermoelectric signal.
Article
Physics, Multidisciplinary
Hongyu Lu, Chuhao Li, Bin-Bin Chen, Wei Li, Yang Qi, Zi Yang Meng
Summary: This study designs generative neural networks that can generate Monte Carlo configurations without autocorrelation, requiring only short Markov chains for measurements of physical observables. A Monte Carlo scheme based on these neural networks is proposed to accelerate simulations by reducing thermalization. The performance of the approach is demonstrated on the Ising and fermion Hubbard models, with the potential to speed up simulations for challenging many-electron problems.
CHINESE PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Hang Su, Feng Du, Rui Li, Shuaishuai Luo, Yuxuan Chen, Jiyong Liu, Ye Chen, Chao Cao, Michael Smidman, Huiqiu Yuan
Summary: The study found structural phase transitions in TiPd2Sn, ZrPd2Sn, and HfPd2Sn at low temperatures, likely related to CDW instabilities, with ZrPd2Sn and HfPd2Sn exhibiting bulk superconductivity. Density functional theory calculations suggest that these compounds are good candidates for investigating the interplay between CDW and superconductivity.
Article
Physics, Multidisciplinary
Bo Liu, Min-Quan Kuang, Yang Luo, Yongkai Li, Cheng Hu, Jiarui Liu, Qian Xiao, Xiquan Zheng, Linwei Huai, Shuting Peng, Zhiyuan Wei, Jianchang Shen, Bingqian Wang, Yu Miao, Xiupeng Sun, Zhipeng Ou, Shengtao Cui, Zhe Sun, Makoto Hashimoto, Donghui Lu, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, Luca Moreschini, Alessandra Lanzara, Yao Wang, Yingying Peng, Yugui Yao, Zhiwei Wang, Junfeng He
Summary: In the bismuth-based kagome metal CsTi3Bi5, the electronic instability can be investigated by tuning the van Hove singularity (vHS), which is different from other kagome metals like CsV3Sb5.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Physical
Yanpeng Song, Fanqi Meng, Tianping Ying, Jun Deng, Junjie Wang, Xu Han, Qinghua Zhang, Yuan Huang, Jian-gang Guo, Xiaolong Chen
Summary: The study on IrTe2 using Au-assisted exfoliation method revealed the coexistence of superconducting and charge density wave phases in nanoflakes, demonstrating the competition between these two electronic states. The dimensional fluctuations in the superconducting area suppress the charge density wave ordering, while strain-induced bond breaking favors the formation of charge density wave in IrTe2.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Aerospace
Pooja Devi, Ramesh Chandra, Reetika Joshi, P. F. Chen, Brigitte Schmieder, Wahab Uddin, Yong -Jae Moon
Summary: The transverse oscillations of two prominences located at the East solar limb on 2011 February 11 were studied, and the embedded magnetic field magnitude was inferred from these observations.
ADVANCES IN SPACE RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Kazuto Akiba, Hiroaki Nishimori, Nobuaki Umeshita, Tatsuo C. Kobayashi
Summary: In our comprehensive study of LaAgSb2 under high pressure, we observed unique CDW transitions that disappeared at critical pressures. Changes in Hall conductivity indicated the emergence of a two-dimensional Fermi surface, and significant enhancements in oscillation frequency were observed in a limited pressure range.
Article
Materials Science, Multidisciplinary
Paulina Majchrzak, Sahar Pakdel, Deepnarayan Biswas, Alfred J. H. Jones, Klara Volckaert, Igor Markovic, Federico Andreatta, Raman Sankar, Chris Jozwiak, Eli Rotenberg, Aaron Bostwick, Charlotte E. Sanders, Yu Zhang, Gabriel Karras, Richard T. Chapman, Adam Wyatt, Emma Springate, Jill A. Miwa, Philip Hofmann, Phil D. C. King, Nicola Lanata, Young Jun Chang, Soren Ulstrup
Summary: Researchers perturb the electronic and vibrational states in a three-dimensional charge density wave material using an intense infrared laser pulse, and observe the light-induced hot carrier dynamics utilizing time- and angle-resolved photoemission spectroscopy. They find that the presence of hot carriers alters the phonon dispersion and leads to a new quasi-equilibrium state.
Article
Physics, Fluids & Plasmas
Manuel Weber, James K. Freericks
Summary: We propose an exact Monte Carlo method for simulating the nonequilibrium dynamics of electron-phonon models with zero phonon frequency in the adiabatic limit. Our approach efficiently evolves the electronic subsystem in a time-dependent electromagnetic field for each phonon configuration by sampling the equilibrium phonon distribution. We demonstrate the usefulness of our method in studying charge-density-wave systems under pulsed electric fields, as observed in pump-probe experiments.
Article
Chemistry, Physical
Junzhang Ma, Simin Nie, Xin Gui, Muntaser Naamneh, Jasmin Jandke, Chuanying Xi, Jinglei Zhang, Tian Shang, Yimin Xiong, Itzik Kapon, Neeraj Kumar, Yona Soh, Daniel Gosalbez-Martinez, Oleg Yazyev, Wenhui Fan, Hannes Huebener, Umberto De Giovannini, Nicholas Clark Plumb, Milan Radovic, Michael Andreas Sentef, Weiwei Xie, Zhijun Wang, Christopher Mudry, Markus Mueller, Ming Shi
Summary: Using angle-resolved photoemission spectroscopy, the authors detected mobile bound states of excitons in quasi-one-dimensional metallic TaSe3, providing evidence for the elusive exciton mobility in metals.
Article
Physics, Multidisciplinary
Yawen Fang, Gael Grissonnanche, Anaelle Legros, Simon Verret, Francis Laliberte, Clement Collignon, Amirreza Ataei, Maxime Dion, Jianshi Zhou, David Graf, Michael J. Lawler, Paul A. Goddard, Louis Taillefer, B. J. Ramshaw
Summary: The nature of the pseudogap phase in cuprate high-temperature superconductors remains a major puzzle, especially regarding the topology of its Fermi surface. Angle-dependent magnetoresistance (ADMR) data suggests that within the pseudogap phase, the Fermi surface undergoes a transformation consistent with the presence of small nodal hole pockets. This indicates a change in the form of the Fermi surface when the pseudogap is present, potentially explaining the low carrier density in this regime.
Article
Materials Science, Multidisciplinary
Kevin S. Huang, Zhaoyu Han, Steven A. Kivelson, Hong Yao
Summary: In this study, a density-matrix renormalization-group study was conducted on PDW superconducting states on long triangular cylinders, revealing strong quasi-long-range PDW order, divergent PDW susceptibility, and the spontaneous breaking of time-reversal and inversion symmetries. The state was identified as valley-polarized and the PDW was found to arise from intra-pocket pairing with an incommensurate center of mass momentum. This study also observed an unusual realization of a Luther-Emery liquid in the two-leg case.
NPJ QUANTUM MATERIALS
(2022)
Article
Physics, Multidisciplinary
Jiachen Yu, Benjamin A. Foutty, Zhaoyu Han, Mark E. Barber, Yoni Schattner, Kenji Watanabe, Takashi Taniguchi, Philip Phillips, Zhi-Xun Shen, Steven A. Kivelson, Benjamin E. Feldman
Summary: This study examines the phase diagram of isospin polarization in magic-angle twisted bilayer graphene and discovers multiple many-body quantum phases and topological states in narrow energy bands, providing insights into the transitions between these states and their interplay with interactions and symmetry breaking.
Article
Multidisciplinary Sciences
Sangjun Lee, Edwin W. Huang, Thomas A. Johnson, Xuefei Guo, Ali A. Husain, Matteo Mitrano, Kannan Lu, Alexander Zakrzewski, Gilberto A. de la Pena, Yingying Peng, Hai Huang, Sang-Jun Lee, Hoyoung Jang, Jun-Sik Lee, Young Il Joe, William B. Doriese, Paul Szypryt, Daniel S. Swetz, Songxue Chi, Adam A. Aczel, Gregory J. MacDougall, Steven A. Kivelson, Eduardo Fradkin, Peter Abbamonte
Summary: The behavior of charge density waves (CDWs) in different families of copper-oxide superconductors has been studied. This research found that the CDW amplitude is temperature independent and develops well above experimentally accessible temperatures. The CDW wavevector shows a nonmonotonic temperature dependence, exhibiting different behaviors at low temperatures and near the spin ordering temperature. The study suggests a common mechanism for CDW order in all families of cuprates.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Physics, Multidisciplinary
Daniel Jost, Leander Peis, Ge He, Andreas Baum, Stephan Gepraegs, Johanna C. Palmstrom, Matthias S. Ikeda, Ian R. Fisher, Thomas Wolf, Samuel Lederer, Steven A. Kivelson, Rudi Hackl
Summary: This study shows that marginal Fermi liquid behavior, characterized by scaling properties, can be observed in an Fe-based superconductor tuned through a quantum critical point by chemical substitution or doping. The findings suggest a connection between marginal Fermi liquid behavior and quantum criticality, and imply a contribution from quantum fluctuations to the formation of superconductivity.
COMMUNICATIONS PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Johannes S. Hofmann, Debanjan Chowdhury, Steven A. Kivelson, Erez Berg
Summary: This article discusses the limits of the superconducting transition temperature (T-c) based on various heuristic upper bounds. It shows that these bounds, although physically motivated and useful in many cases, do not serve as a fundamental limit for T-c.
NPJ QUANTUM MATERIALS
(2022)
Article
Physics, Multidisciplinary
Kyung-Su Kim, Chaitanya Murthy, Akshat Pandey, Steven A. Kivelson
Summary: This study investigates the magnetism of two-dimensional Wigner crystals in two-dimensional electron gases, particularly in the strongly interacting regime. The results suggest that under certain conditions, a fully polarized ferromagnetic insulator can be formed.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Zhaoyu Han, Steven A. Kivelson
Summary: We study a simple electron-phonon model on square and triangular versions of the Lieb lattice using an asymptotically exact strong coupling analysis. We establish the existence of a spin-liquid phase with Z(2) topological order and a multicritical line corresponding to a quantum critical spin liquid. We also find charge-density-wave phases, conventional s-wave and d-wave superconducting phases.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
John Sous, Yu He, Steven A. Kivelson
Summary: This article focuses on the temperature dependence of the chemical potential mu in the BCS to BEC crossover. We determine the change of mu in cuprate high temperature superconductors through ARPES data and find that mu varies by less than a few percent of the Fermi energy within the range of temperatures below and above the superconducting transition temperature Tc. This clearly indicates that these materials are always on the BCS side of the crossover and are far from the point of the crossover where the chemical potential approaches the band bottom.
NPJ QUANTUM MATERIALS
(2023)
Editorial Material
Physics, Applied
Steven Kivelson, Shivaji Sondhi
Summary: In 1973, Philip Anderson published a paper presenting the resonating valence bond state, which is now recognized as a topologically ordered phase of matter, unable to be classified conventionally based on its patterns of symmetry breaking. Steven Kivelson and Shivaji Sondhi reflect on the impact of this paper over the past 50 years.
NATURE REVIEWS PHYSICS
(2023)
Article
Physics, Applied
Vladimir Calvera, Steven A. A. Kivelson, Erez Berg
Summary: We study the multi-valley electron gases in the low-density limit (r(s) >> 1). The ground state is found to be a Wigner crystal (WC) with additional pseudo-spin order related to valley occupancies. Depending on the symmetries of the host semiconductor and the parameters such as anisotropy of effective mass tensors, various pseudo-spin ordered states are observed, including striped or chiral pseudo-spin antiferromagnets and time-reversal symmetry breaking orbital loop-current ordered pseudo-spin ferromagnets. Our findings have implications for WC states in AlAs and mono and bilayer transition metal dichalcogenides, and propose the possibility of electronic liquid crystalline phases through continuous quantum melting of these WCs.
LOW TEMPERATURE PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Andrew C. Yuan, Erez Berg, Steven A. Kivelson
Summary: A conjectured accidental degeneracy between two patterns of pairing in Sr2RuO4 is proposed to explain the seemingly contradictory experimental findings. A generic multiband model is used to describe the g-wave pairing and it is found that even if time-reversal symmetry is broken, the superconductor remains gapless with a Bogoliubov Fermi surface approximating a vertical line node. The model provides a strain-dependent splitting between Tc and TTRSB, which is consistent with some experimental observations in Sr2RuO4.
Article
Materials Science, Multidisciplinary
Sijia Zhao, Zhaoyu Han, Steven A. Kivelson, Ilya Esterlis
Summary: We investigate the global ground-state phase diagram of a one-dimensional spinful Holstein model at half filling, taking into account the strength of the electron-phonon coupling (represented by the phonon-induced attraction strength, U) and the phonon frequency co0. Our analysis includes density-matrix renormalization group simulations, which correct previous conclusions on the antiadiabatic and strong-coupling regimes. The phase diagram exhibits two distinct phases, a fully gapped charge-density-wave phase and a spin-gapped Luther-Emery phase, separated by a phase boundary that reflects different microscopic physics in the weak and strong coupling limits.
Article
Materials Science, Multidisciplinary
Yuval Gannot, Steven A. Kivelson
Summary: In this article, we investigate the properties of T=0 quantum phases, such as superconducting and analogous spin-liquid phases, on infinite cylinders of width L1. We analyze the approaches to the two-dimensional (2D) limit. This problem is not only interesting itself but also crucial for extrapolating density matrix renormalization group (DMRG) results to the desired 2D limit in strongly interacting systems. Various methods for drawing firm conclusions about the quantum phases in 2D from relatively small L1 results are demonstrated.
Article
Materials Science, Multidisciplinary
Steven A. Kivelson, Akshat Pandey, Anisha G. Singh, Aharon Kapitulnik, Ian R. Fisher
Summary: In this paper, we study the critical behavior of incommensurate unidirectional charge-density-wave ordering in a weakly orthorhombic system subject to uniaxial strain, which serves as an experimentally significant example of U (1) x U (1) multicriticality. Depending on microscopic details, the phase diagram can exhibit qualitatively different structures, such as vestigial metanematic critical point, a pair of tricritical points, decoupled tetracritical point, or (at least at mean-field level) bicritical point. We analyze the emergent symmetries in the critical regime and find that in some cases, an emergent Z2 order parameter symmetry can be present.
Article
Materials Science, Multidisciplinary
Xiao-Qi Sun, Jing-Yuan Chen, Steven A. Kivelson
Summary: Recent experiments have shown unexpectedly large thermal Hall conductivities in insulating materials, which may be attributed to an as-yet unidentified extrinsic source of skew scattering of acoustic phonons. This study demonstrates that resonant scattering of phonons from a specific class of three-level systems leads to strong skew scattering in the presence of a modest magnetic field, providing a possible explanation for the observed phenomena.
