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JournalISSN: 0031-9007

Physical Review Letters

About: Physical Review Letters is an academic journal. The journal publishes majorly in the area(s): Scattering & Electron. It has an ISSN identifier of 0031-9007. Over the lifetime, 130358 publication(s) have been published receiving 9661066 citation(s). The journal is also known as: Phys. Rev. Lett. & PRL. more

Topics: Scattering, Electron, Superconductivity more

Journal ArticleDOI: 10.1103/PHYSREVLETT.77.3865
Abstract: Generalized gradient approximations (GGA’s) for the exchange-correlation energy improve upon the local spin density (LSD) description of atoms, molecules, and solids. We present a simple derivation of a simple GGA, in which all parameters (other than those in LSD) are fundamental constants. Only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked. Improvements over PW91 include an accurate description of the linear response of the uniform electron gas, correct behavior under uniform scaling, and a smoother potential. [S0031-9007(96)01479-2] PACS numbers: 71.15.Mb, 71.45.Gm Kohn-Sham density functional theory [1,2] is widely used for self-consistent-field electronic structure calculations of the ground-state properties of atoms, molecules, and solids. In this theory, only the exchange-correlation energy EXC › EX 1 EC as a functional of the electron spin densities n"srd and n#srd must be approximated. The most popular functionals have a form appropriate for slowly varying densities: the local spin density (LSD) approximation Z d 3 rn e unif more

117,932 Citations

Open accessJournal ArticleDOI: 10.1103/PHYSREVLETT.97.187401
Abstract: Graphene is the two-dimensional building block for carbon allotropes of every other dimensionality We show that its electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers The D peak second order changes in shape, width, and position for an increasing number of layers, reflecting the change in the electron bands via a double resonant Raman process The G peak slightly down-shifts This allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area more

Topics: Bilayer graphene (64%), Graphene nanoribbons (62%), Graphene (58%) more

12,229 Citations

Open accessJournal ArticleDOI: 10.1103/PHYSREVLETT.58.2059
Eli Yablonovitch1Institutions (1)
Abstract: It has been recognized for some time that the spontaneous emission by atoms is not necessarily a fixed and immutable property of the coupling between matter and space, but that it can be controlled by modification of the properties of the radiation field. This is equally true in the solid state, where spontaneous emission plays a fundamental role in limiting the performance of semiconductor lasers, heterojunction bipolar transistors, and solar cells. If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden. more

Topics: Spontaneous emission (63%), Stimulated emission (62%), Heterojunction (54%) more

12,133 Citations

Open accessJournal ArticleDOI: 10.1103/PHYSREVLETT.56.930
G. Binnig1, Calvin F. Quate1, Ch. Gerber2Institutions (2)
Abstract: The scanning tunneling microscope is proposed as a method to measure forces as small as 10-18 N. As one application for this concept, we introduce a new type of microscope capable of investigating surfaces of insulators on an atomic scale. The atomic force microscope is a combination of the principles of the scanning tunneling microscope and the stylus profilometer. It incorporates a probe that does not damage the surface. Our preliminary results in air demonstrate a lateral resolution of 30 A and a vertical resolution less than 1 A. more

Topics: Microscope (71%), Atomic de Broglie microscope (67%), Local oxidation nanolithography (62%) more

11,795 Citations

Open accessJournal ArticleDOI: 10.1103/PHYSREVLETT.105.136805
Kin Fai Mak1, Changgu Lee2, James Hone1, Jie Shan3  +1 moreInstitutions (3)
Abstract: The electronic properties of ultrathin crystals of molybdenum disulfide consisting of N=1,2,…,6 S-Mo-S monolayers have been investigated by optical spectroscopy Through characterization by absorption, photoluminescence, and photoconductivity spectroscopy, we trace the effect of quantum confinement on the material's electronic structure With decreasing thickness, the indirect band gap, which lies below the direct gap in the bulk material, shifts upwards in energy by more than 06 eV This leads to a crossover to a direct-gap material in the limit of the single monolayer Unlike the bulk material, the MoS₂ monolayer emits light strongly The freestanding monolayer exhibits an increase in luminescence quantum efficiency by more than a factor of 10⁴ compared with the bulk material more

Topics: Monolayer (61%), Direct and indirect band gaps (59%), Photoconductivity (57%) more

11,041 Citations

No. of papers from the Journal in previous years

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Journal's top 5 most impactful authors

Yongsun Kim

467 papers, 27.9K citations

Andrew Beretvas

427 papers, 21.3K citations

Virgil E Barnes

373 papers, 17.6K citations

D. M. Strom

328 papers, 19.3K citations

Teruki Kamon

277 papers, 12.3K citations

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