Featured
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Review Article |
Ultrafast dynamics in van der Waals heterostructures
This Review discusses recent experimental and theoretical efforts in electron dynamics in TMDC heterostructures and the relevance of these effects for potential applications in optoelectronic and valleytronic/spintronic devices.
- Chenhao Jin
- , Eric Yue Ma
- & Tony F. Heinz
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Review Article |
Interlayer valley excitons in heterobilayers of transition metal dichalcogenides
This Review discusses the contemporary experimental and theoretical understanding of interlayer excitons in heterobilayers of transition metal dichalcogenides.
- Pasqual Rivera
- , Hongyi Yu
- & Xiaodong Xu
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Letter |
Superconducting gatemon qubit based on a proximitized two-dimensional electron gas
Scalable gate tunable superconducting qubits can be realized using a proximitized InAs two-dimensional electron gas.
- Lucas Casparis
- , Malcolm R. Connolly
- & Karl D. Petersson
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Letter |
Plasmon-induced carrier polarization in semiconductor nanocrystals
Cyclotron plasmonic modes can be used to induce carrier polarization in doped semiconductors.
- Penghui Yin
- , Yi Tan
- & Pavle V. Radovanovic
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Letter |
Electrical control of charged carriers and excitons in atomically thin materials
Formation of a homogeneous two-dimensional electron gas in transition metal dichalcogenide heterostructures allows for efficient electrical control of charge carriers and excitons.
- Ke Wang
- , Kristiaan De Greve
- & Philip Kim
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Letter |
Ballistic Majorana nanowire devices
Nanowire devices exhibiting ballistic transport show characteristics of Majorana modes, ruling out alternative explanations other than topological superconductivity.
- Önder Gül
- , Hao Zhang
- & Leo P. Kouwenhoven
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News & Views |
Tunable confinement of charges and excitations
Electrical control over quantum confinement opens a new avenue for spatial manipulation of charge carriers and bound excited states for quantum opto-electronics.
- Deep Jariwala
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News & Views |
Fast and pure
Removing nuclear spins by means of isotopically purified silicon, and introducing magnetic field gradients by means of microfabricated ferromagnets yields electron spin qubits with enhanced fidelity and fast electrical control.
- Silvano De Franceschi
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Letter |
Steep-slope hysteresis-free negative capacitance MoS2 transistors
A field-effect MoS<Subscript>2</Subscript> transistor with a negative capacitor in its gate shows stable, hysteresis-free performance characterized by a sub-thermionic sub-threshold slope.
- Mengwei Si
- , Chun-Jung Su
- & Peide D. Ye
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Letter |
A quantum-dot spin qubit with coherence limited by charge noise and fidelity higher than 99.9%
Quantum control on an isotopically enriched Si spin qubit is demonstrated with ultrahigh gate fidelities and long coherence times — even in the presence of sizeable charge noise.
- Jun Yoneda
- , Kenta Takeda
- & Seigo Tarucha
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Letter |
Observation of Dirac bands in artificial graphene in small-period nanopatterned GaAs quantum wells
Advanced nanoengineering of small-period AG lattices enables the observation of a vanishing density of states that suggests the presence of massless Dirac fermions.
- Sheng Wang
- , Diego Scarabelli
- & Aron Pinczuk
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Review Article |
High-performance semiconductor quantum-dot single-photon sources
This Review describes progress in the fabrication of semiconductor quantum-dot structures, which are approaching the ideal single-photon emitter, and highlights the remaining challenges.
- Pascale Senellart
- , Glenn Solomon
- & Andrew White
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News & Views |
2D materials for silicon photonics
Integration of 2D semiconductor optoelectronics with silicon photonics opens a new path for on-chip point-to-point optical communications.
- Yanhao Tang
- & Kin Fai Mak
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Correspondence |
Reply to 'Absence of redshift in the direct bandgap of silicon nanocrystals with reduced size'
- Wieteke de Boer
- , Dolf Timmerman
- & Tom Gregorkiewicz
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Correspondence |
Absence of redshift in the direct bandgap of silicon nanocrystals with reduced size
- Jun-Wei Luo
- , Shu-Shen Li
- & Alex Zunger
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Article |
Coplanar semiconductor–metal circuitry defined on few-layer MoTe2 via polymorphic heteroepitaxy
Sequential heteroepitaxy of transition-metal dichalcogenide polymorphs with different electronic properties is used to build coplanar ultrathin circuitry with atomic-scale precision.
- Ji Ho Sung
- , Hoseok Heo
- & Moon-Ho Jo
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News & Views |
Brightening the dark excitons
Two independent methods using near-field coupling to surface plasmon polaritons and magnetic brightening allow the observation of dark excitons in WSe2.
- Kian Ping Loh
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Letter |
Enhanced valley splitting in monolayer WSe2 due to magnetic exchange field
Magnetic exchange field from an EuS substrate breaks the valley degeneracy for monolayer WSe2, leading to enhanced valley splitting.
- Chuan Zhao
- , Tenzin Norden
- & Hao Zeng
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Article |
Magnetic polaron on dangling-bond spins in CdSe colloidal nanocrystals
Nonmagnetic colloidal nanocrystals demonstrate magnetic properties due to spins of dangling bonds at their surface resulting in formation of dangling-bond magnetic polarons.
- Louis Biadala
- , Elena V. Shornikova
- & Manfred Bayer
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Research Highlights |
Our choice from the recent literature
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Article |
Opto-valleytronic imaging of atomically thin semiconductors
Monolayer semiconductors reveal their crystal quality and valleytronic properties in two-dimensional polarimetric imaging.
- Andre Neumann
- , Jessica Lindlau
- & Alexander Högele
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Letter |
Femtosecond photo-switching of interface polaritons in black phosphorus heterostructures
Surface phonons of SiO2 can couple with photogenerated plasmon polaritons in black phosphorous to make coherent transient hybrid modes with constant energy and momentum
- Markus A. Huber
- , Fabian Mooshammer
- & Rupert Huber
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Letter |
Normal, superconducting and topological regimes of hybrid double quantum dots
By varying the coupling between quantum dots obtained by patterning an InAs nanowire it is possible to control the transition between superconducting and normal states.
- D. Sherman
- , J. S. Yodh
- & C. M. Marcus
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Letter |
Strong suppression of shot noise in a feedback-controlled single-electron transistor
Shot noise can be suppressed, which is essential for improving the performance of quantum transport devices, by using an electronic closed-loop feedback that monitors and adjusts the counting statistics.
- Timo Wagner
- , Philipp Strasberg
- & Rolf J. Haug
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Letter |
Notch filtering the nuclear environment of a spin qubit
Nuclear spins in gallium arsenide produce noise at discrete frequencies, which can be notch-filtered efficiently to extend coherence times of electron spin qubits to nearly 1 ms.
- Filip K. Malinowski
- , Frederico Martins
- & Ferdinand Kuemmeth
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Letter |
Direct observation of the layer-dependent electronic structure in phosphorene
Investigation of the electronic structure in few-layer phosphorene reveals optical transitions relevant for technologically important electronic and optoelectronic applications.
- Likai Li
- , Jonghwan Kim
- & Feng Wang
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News & Views |
Electric tuning of many-body states
Charge carriers in strongly correlated electron systems can be manipulated electrically in a device made of atomically thin materials.
- Peter Abbamonte
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Editorial |
When the dots are joined
We consider the potential of colloidal quantum dot solids for optoelectronic applications.
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Commentary |
Prospects for thermoelectricity in quantum dot hybrid arrays
The electronic, chemical and mechanical properties of quantum dot structures may lead to thermoelectric devices with a range of advantages with respect to existing ones based on bulk polycrystalline materials.
- Jeffrey J. Urban
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Commentary |
Opportunities and challenges for quantum dot photovoltaics
Although research into colloidal quantum dots has led to promising results for the realization of photovoltaic devices, a better understanding of the robustness and stability of these devices is necessary before commercial competiveness can be claimed.
- Maksym V. Kovalenko
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Commentary |
What future for quantum dot-based light emitters?
Synthesis of semiconductor colloidal quantum dots by low-cost, solution-based methods has produced an abundance of basic science. Can these materials be transformed to high-performance light emitters to disrupt established photonics technologies, particularly semiconductor lasers?
- Arto Nurmikko
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Letter |
Revealing giant internal magnetic fields due to spin fluctuations in magnetically doped colloidal nanocrystals
Effective magnetic fields as high as 30 T can arise in magnetically doped nanocrystals due to spin fluctuations alone, and can now be observed using ultrafast optical spectroscopy.
- William D. Rice
- , Wenyong Liu
- & Scott A. Crooker
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Research Highlights |
Our choice from the recent literature
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In the Classroom |
No such thing as a bad result
The failures in our experimental research are necessary steps to obtain excellent results, says Francesco Carulli.
- Francesco Carulli
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Research Highlights |
Our choice from the recent literature
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Letter |
Negative electronic compressibility and tunable spin splitting in WSe2
Angle-resolved photoemission measurements of electron-doped layers of tungsten diselenide reveal signatures of negative electronic compressibility that survive to much higher carrier densities than in conventional 2D electron gases.
- J. M. Riley
- , W. Meevasana
- & P. D. C. King
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Editorial |
Single photons for all
The observation of single-photon emission from defects in a two-dimensional semiconductor could lead to rapid developments in the pursuit of reliable and low-cost single-photon sources.
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Research Highlights |
Our choice from the recent literature
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Letter |
Electrical detection of coherent spin precession using the ballistic intrinsic spin Hall effect
An indium arsenide quantum well with a ferromagnetic spin injector and a spin Hall detector is used to electrically measure the conductance oscillations due to spin precession in a transistor channel.
- Won Young Choi
- , Hyung-jun Kim
- & Mark Johnson
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Article |
Black silicon solar cells with interdigitated back-contacts achieve 22.1% efficiency
A power conversion efficiency of 22% is achieved in black silicon back-contacted solar cells through passivation of the nanostructured surface by a conformal alumina layer.
- Hele Savin
- , Päivikki Repo
- & Ramon Alcubilla
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News & Views |
Tuning harmonics with excitons
Nonlinear generation of light from an atomically thin semiconductor can be controlled by electrical fields.
- Sean P. Rodrigues
- & Wenshan Cai
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In the Classroom |
Expect the unexpected
When you have discovered something unusual, trust your instinct and pursue it with determination and enthusiasm, says Renren Deng.
- Renren Deng
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News & Views |
Bright colours ahead
Full-colour displays with high spatial resolution can be produced with properly designed upconversion nanocrystals that emit light at different wavelengths, depending on the properties of the excitation pulses.
- Marco Bettinelli
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Letter |
Microwave-driven coherent operation of a semiconductor quantum dot charge qubit
A microwave signal can be used to control semiconductor charge qubits with high fidelity.
- Dohun Kim
- , D. R. Ward
- & M. A. Eriksson