Journal ArticleDOI
Nanoscale electrodynamics of strongly correlated quantum materials.
TLDR
This review offers a concise description of the state-of-the-art near-field techniques applied to prototypical correlated quantum materials and discusses complementary microscopic and spectroscopic methods which reveal important mesoscopic dynamics of quantum materials at different energy scales.Citations
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Highly confined low-loss plasmons in graphene-boron nitride heterostructures
Achim Woessner,Mark B. Lundeberg,Yuanda Gao,Alessandro Principi,Pablo Alonso-González,Matteo Carrega,Kenji Watanabe,Takashi Taniguchi,Giovanni Vignale,Marco Polini,James Hone,Rainer Hillenbrand,Frank H. L. Koppens +12 more
TL;DR: This Article exploits near-field microscopy to image propagating plasmons in high-quality graphene encapsulated between two films of hexagonal boron nitride (h-BN), and finds unprecedentedly low plasmon damping combined with strong field confinement and confirms the high uniformity of this plAsmonic medium.
Journal ArticleDOI
Moiré heterostructures as a condensed-matter quantum simulator
Dante M. Kennes,Dante M. Kennes,Martin Claassen,Lede Xian,Antoine Georges,Andrew J. Millis,James Hone,Cory Dean,Dimitri Basov,Abhay Pasupathy,Angel Rubio +10 more
TL;DR: In this article, the authors explore the idea of adopting twisted van der Waals heterostructures as a quantum simulation platform that enables the study of strongly correlated physics and topology in quantum materials.
Journal ArticleDOI
Modern Scattering-Type Scanning Near-Field Optical Microscopy for Advanced Material Research
TL;DR: This work focuses on the pioneering efforts to study the nanoscale electrodynamic properties of plasmonic metamaterials, strongly correlated quantum materials, and polaritonic systems at room or cryogenic temperatures.
Journal Article
Direct correlation of structural domain formation with the metal-insulator transition in VO$_{2 }$nanobeams
TL;DR: In this article, the electrical resistance of VO(2) nanobeams was measured while simultaneously mapping the domain structure with Raman spectroscopy to investigate the relationship between structural domain formation and the metal-insulator transition.
Journal ArticleDOI
Reconfigurable infrared hyperbolic metasurfaces using phase change materials.
Thomas G. Folland,Alireza Fali,Samuel T. White,Joseph R. Matson,Song Liu,Neda Alsadat Aghamiri,James H. Edgar,Richard F. Haglund,Yohannes Abate,Joshua D. Caldwell +9 more
TL;DR: It is demonstrated that the dispersion of hyperbolic phonon polaritons can be controlled using the permittivity changes inherent in the different phases of phase change materials, which enables direct launching, reflection, transmission and refraction at the phase change material domain boundaries.
References
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Journal ArticleDOI
Possible high Tc superconductivity in the Ba-La-Cu-O system
TL;DR: In this paper, Ba−La−Cu−O system, with the composition BaxLa5−xCu5O5(3−y) have been prepared in polycrystalline form, and samples with x=1 and 0.75,y>0, annealed below 900°C under reducing conditions, consist of three phases, one of them a perovskite-like mixed-valent copper compound.
Journal ArticleDOI
Metal-insulator transitions
TL;DR: A review of the metal-insulator transition can be found in this article, where a pedagogical introduction to the subject is given, as well as a comparison between experimental results and theoretical achievements.
Journal ArticleDOI
Vortices in high-temperature superconductors
TL;DR: The Ginzburg number as discussed by the authors was introduced to account for thermal and quantum fluctuations and quenched disorder in high-temperature superconductors, leading to interesting effects such as melting of the vortex lattice, the creation of new vortex-liquid phases, and the appearance of macroscopic quantum phenomena.
Journal ArticleDOI
Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O Films
TL;DR: A negative isotropic magnetoresistance effect has been observed in thin oxide films of perovskite-like La0.67Ca0.33MnOx, which could be useful for various magnetic and electric device applications if the observed effects of material processing are optimized.
Journal ArticleDOI
Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates
Xiangang Wan,Ari M. Turner,Ashvin Vishwanath,Ashvin Vishwanath,Sergey Y. Savrasov,Sergey Y. Savrasov +5 more
TL;DR: In this paper, the topological semimetal, a three-dimensional phase of a magnetic solid, is described and it may be realized in a class of pyrochlore iridates based on calculations using the LDA+U$ method.
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