Cornell University

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2015 · cond-mat.mes-hallShow all

19 papers · 2 filters

cond-mat.mes-hall2015★ 495 cited

Spin torque study of the spin Hall conductivity and spin diffusion length in platinum thin films with varying resistivity

Minh-Hai Nguyen, D. C. Ralph, R. A. Buhrman

We report measurements of the spin torque efficiencies in perpendicularly-magnetized Pt/Co bilayers where the Pt resistivity $ρ_{P t}$ is strongly dependent on thickness $t_{P t}$ .…

cond-mat.mes-hall2015★ 210 cited

Surface Recombination Limited Lifetimes of Photoexcited Carriers in Few-Layer Transition Metal Dichalcogenide MoS2

Haining Wang, Changjian Zhang, Farhan Rana

We present results on photoexcited carrier lifetimes in few-layer transition metal dichalcogenide MoS2 using nondegenerate ultrafast optical pump-probe technique. Our results show…

cond-mat.mes-hall2015

Polarization spectroscopy of defect-based single photon sources in ZnO

N. R. Jungwirth, H. -S. Chang, M. Jiang +1

Point-defects in wide bandgap semiconductors are promising candidates for future applications that necessitate quantum light sources. Recently, defect-based single photon sources h…

cond-mat.mes-hall2015★ 197 cited

Ultrafast Response of Monolayer Molybdenum Disulfide (MoS2) Photodetectors

Haining Wang, Changjian Zhang, Weimin Chan +2

The strong light emission and absorption exhibited by single atomic layer transitional metal dichalcogenides in the visible to near-infrared wavelength range makes them attractive…

cond-mat.mes-hall2015★ 2 cited

Quantum Hall realization of polarized intensity interferometry

Krishanu Roychowdhury, Disha Wadhawan, Poonam Mehta +2

We combine the ideas of intensity interferometry, polarization optics and Bell's measurement into an experimental proposal which is hosted in a $ν$ = $2$ quantum Hall (QH) edge s…

cond-mat.mes-hall2015★ 248 cited

Near-field radiative heat transfer between nanostructures in the deep sub-wavelength regime

Raphael St-Gelais, Linxiao Zhu, Shanhui Fan +1

Radiative heat transfer between parallel objects separated by deep sub-wavelength distances and subject to large thermal gradients (>100 K) could enable breakthrough technologies f…

cond-mat.mes-hall2015★ 55 cited

All-Optical Vector Measurement of Spin-Orbit-Induced Torques Using Both Polar and Quadratic Magneto-Optic Kerr Effects

Xin Fan, Alex R. Mellnik, Wenrui Wang +6

We demonstrate that the magneto-optic-Kerr effect with normal light incidence can be used to obtain quantitative optical measurements of both components of spin-orbit-induced torqu…

cond-mat.mes-hall2015★ 88 cited

Dirac Spin-Orbit Torques at the Surface of Topological Insulators

P. B. Ndiaye, C. A. Akosa, M. H. Fischer +3

We address the nature of spin-orbit torques at the magnetic surfaces of topological insulators, using both Kubo formula and Keldysh formalism. Through the analysis of the derived s…

cond-mat.mes-hall2015

Polarization-induced Zener Tunnel Diodes in GaN/InGaN/GaN Heterojunctions

Xiaodong Yan, Wenjun Li, S. M. Islam +4

By the insertion of thin InGaN layers into Nitrogen-polar GaN p-n junctions, polarization-induced Zener tunnel junctions are studied. The reverse-bias interband Zener tunneling cur…

cond-mat.mes-hall2015★ 7 cited

Anatase TiO $_{2}$ Nanowires Functionalized by Organic Sensitizers for Solar Cells : A Screened Coulomb Hybrid Density Functional Study

Hatice Unal, Deniz Gunceler, Oguz Gulseren +2

The adsorption of two different organic molecules cyanidin glucoside (C $_{21}$ O $_{11}$ H $_{20}$ ) and TA-St-CA on anatase (101) and (001) nanowires have been investigated using the s…

cond-mat.mes-hall2015★ 6 cited

Dynamical systems study in single-phase multiferroic materials

Kuntal Roy

Electric field induced magnetization switching in single-phase multiferroic materials is intriguing for both fundamental studies and potential technological applications. Here we d…

cond-mat.mes-hall2015★ 29 cited

Ultra-low-energy computing paradigm using giant spin Hall devices

Kuntal Roy

Spin Hall effect converts charge current to spin current, which can exert spin-torque to switch the magnetization of a nanomagnet. Recently, it is shown that the ratio of spin curr…

cond-mat.mes-hall2015★ 101 cited

24 \textmu m length spin relaxation length in boron nitride encapsulated bilayer graphene

Josep Ingla-Aynés, Marcos H. D. Guimarães, Rick J. Meijerink +2

We have performed spin and charge transport measurements in dual gated high mobility bilayer graphene encapsulated in hexagonal boron nitride. Our results show spin relaxation leng…

cond-mat.mes-hall2015★ 66 cited

Strongly bound excitons dominate electronic relaxation in resonantly excited twisted bilayer graphene

Hiral Patel, Lola Brown, Yufeng Liang +3

When two sheets of graphene stack in a twisted bilayer graphene (tBLG) configuration, the resulting constrained overlap between interplanar 2p orbitals produce angle-tunable electr…

cond-mat.mes-hall2015★ 211 cited

Fractional fractal quantum Hall effect in graphene superlattices

Lei Wang, Yuanda Gao, Bo Wen +6

The Hofstadter energy spectrum provides a uniquely tunable system to study emergent topological order in the regime of strong interactions. Previous experiments, however, have been…

cond-mat.mes-hall2015★ 266 cited

Structure and Control of Charge Density Waves in Two-Dimensional 1T-TaS2

A. W. Tsen, R. Hovden, D. Z. Wang +10

The layered transition metal dichalcogenides host a rich collection of charge density wave (CDW) phases in which both the conduction electrons and the atomic structure display tran…

cond-mat.mes-hall2015★ 189 cited

Synchronization and Phase Noise Reduction in Micromechanical Oscillators Arrays Coupled through Light

Mian Zhang, Shreyas Shah, Jaime Cardenas +1

Synchronization of many coupled oscillators is widely found in nature and has the potential to revolutionize timing technologies. Here we demonstrate synchronization in arrays of s…