Výsledky vyhledávání - "Kristen Kaasbjerg"

Atomistic T-matrix theory of disordered two-dimensional materials:Bound states, spectral properties, quasiparticle scattering, and transport

Autor: Kristen Kaasbjerg

Publikováno v: Kaasbjerg, K 2020, ' Atomistic T-matrix theory of disordered two-dimensional materials:Bound states, spectral properties, quasiparticle scattering, and transport ', Physical Review B (Condensed Matter and Materials Physics), vol. 101, 045433 . https://doi.org/10.1103/PhysRevB.101.045433

In this work, we present an atomistic first-principles framework for modeling the low-temperature electronic and transport properties of disordered two-dimensional (2D) materials with randomly distributed point defects (impurities). The method is bas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a0c43aee12a4cfba6f627d8341991e4
https://orbit.dtu.dk/en/publications/19c530fe-89f8-47fa-979e-975efd17612c

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Weak localization measurements of electronic scattering rates in Li-doped epitaxial graphene

Autor: Stiven Forti, Andreas Stohr, Ulrich Starke, Pinder Dosanjh, Kristen Kaasbjerg, Ali Khademi, Joshua Folk

Publikováno v: Khademi, A, Kaasbjerg, K, Dosanjh, P, Stöhr, A, Forti, S, Starke, U & Folk, J A 2019, ' Weak localization measurements of electronic scattering rates in Li-doped epitaxial graphene ', Physical Review B, vol. 100, no. 16, 161405 . https://doi.org/10.1103/physrevb.100.161405

Early experiments on alkali-doped graphene demonstrated that the dopant adatoms modify the conductivity of graphene significantly, as extra carriers enhance conductivity while Coulomb scattering off the adatoms suppresses it. However, conductivity pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afd1b6b9e26e5d693bf6d6c30f3cb2f5
https://doi.org/10.1103/physrevb.100.161405

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Tunable valley Hall effect in gate-defined graphene superlattices

Autor: Kristen Kaasbjerg, Johannes H. J. Martiny, Antti-Pekka Jauho

Publikováno v: Martiny, J H J, Kaasbjerg, K & Jauho, A-P 2019, ' Tunable valley Hall effect in gate-defined graphene superlattices ', Physical Review B, vol. 100, no. 15, 155414 . https://doi.org/10.1103/PhysRevB.100.155414

We theoretically investigate gate-defined graphene superlattices with broken inversion symmetry as a platform for realizing tunable valley dependent transport. Our analysis is motivated by recent experiments [C. Forsythe et al., Nat. Nanotechnol. 13,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de186bf90fac98baf481382d9641666a
https://doi.org/10.1103/physrevb.100.155414

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Electron and hole transport in disordered monolayer MoS2 : Atomic vacancy induced short-range and Coulomb disorder scattering

Autor: Kristen Kaasbjerg, Tony Low, Antti-Pekka Jauho

Publikováno v: Kaasbjerg, K, Low, T & Jauho, A-P 2019, ' Electron and hole transport in disordered monolayer MoS 2 : Atomic vacancy inducedshort-range and Coulomb disorder scattering ', Physical Review B (Condensed Matter and Materials Physics), vol. 100, no. 11, 115409 . https://doi.org/10.1103/PhysRevB.100.115409

Atomic disorder is a common limiting factor for the low-temperature mobility in monolayer transition-metal dichalcogenides (TMDs; MX2). Here, we study the effect of often occurring atomic vacancies on carrier scattering and transport in p- and n-type

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16cf65a198fb589536a0f3ea8664ef8f
https://doi.org/10.1103/physrevb.100.115409

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Fluctuation-driven Coulomb drag in interacting quantum dot systems

Autor: Kristen Kaasbjerg, David Sánchez, Miguel A. Sierra, Antti-Pekka Jauho

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
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Sierra, M A, Sánchez, D, Jauho, A-P & Kaasbjerg, K 2019, ' Fluctuation-driven Coulomb drag in interacting quantum dot systems ', Physical Review B (Condensed Matter and Materials Physics), vol. 100, 081404(R) . https://doi.org/10.1103/PhysRevB.100.081404

Coulomb drag between nanoscale conductors is of both fundamental and practical interest. Here, we theoretically study drag in a double quantum dot (QD) system consisting of a biased drive QD and an unbiased drag QD coupled via a direct interdot Coulo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a5b5184c226a6d4cefc4488d171af29
https://doi.org/10.1103/physrevb.100.081404

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Signatures of adatom effects in the quasiparticle spectrum of Li-doped graphene

Autor: Antti-Pekka Jauho, Kristen Kaasbjerg

Publikováno v: Kaasbjerg, K & Jauho, A-P 2019, ' Signatures of adatom effects in the quasiparticle spectrum of Li-doped graphene ', Physical Review B, vol. 100, no. 24, 241405 . https://doi.org/10.1103/physrevb.100.241405

We study the spectral function and quasiparticle scattering in Li-decorated graphene (Li@graphene) with an atomistic $T$-matrix formalism and uncover adatom-induced spectral effects which shed light on experimentally observed angle-resolved photoemis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72e5072dd69d3b867c289aaa61640c66
https://orbit.dtu.dk/en/publications/67d255ed-0eaa-4945-9151-1a1c12ad8ff5

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Enhanced interlayer neutral excitons and trions in trilayer van der Waals heterostructures

Autor: Xiangfeng Duan, Tony Low, Chanyeol Choi, Abhinav Kumar Vinod, Jongjae Chae, Shu-Wei Huang, Hung-Chieh Cheng, Chee Wei Wong, V. Ongun Özçelik, Sang-Hoon Bae, Kristen Kaasbjerg, Hyunseok Kim, Roberto Grassi, Jiahui Huang

Publikováno v: npj 2D Materials and Applications, Vol 2, Iss 1, Pp 1-9 (2018)
Choi, C, Huang, J, Cheng, H-C, Kim, H, Vinod, A K, Bae, S-H, Özçelik, V O, Grassi, R, Chae, J, Huang, S-W, Duan, X, Kaasbjerg, K, Low, T & Wong, C W 2018, ' Enhanced interlayer neutral excitons and trions in trilayer van der Waals heterostructures ', npj 2D Materials and Applications, vol. 2, no. 1, 30 . https://doi.org/10.1038/s41699-018-0075-1

Vertically stacked van der Waals heterostructures constitute a promising platform for providing tailored band alignment with enhanced excitonic systems. Here we report observations of neutral and charged interlayer excitons in trilayer WSe2-MoSe2-WSe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7221f05d7b3e0b01d2b1c94de6966b88
https://doi.org/10.1038/s41699-018-0075-1

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Quantum Coherent Multielectron Processes in an Atomic Scale Contact

Autor: Fei Xu, Richard Berndt, Peter-Jan Peters, Gianluca Rastelli, Wolfgang Belzig, Kristen Kaasbjerg

Publikováno v: Peters, P-J, Xu, F, Kaasbjerg, K, Rastelli, G, Belzig, W & Berndt, R 2017, ' Quantum Coherent Multielectron Processes in an Atomic Scale Contact ', Physical Review Letters, vol. 119, no. 6, 066803 . https://doi.org/10.1103/PhysRevLett.119.066803

The light emission from a scanning tunneling microscope operated on a Ag(111) surface at 6 K is analyzed from low conductances to values approaching the conductance quantum. Optical spectra recorded at a sample voltages V reveal emission with photon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a1311dafa63a0ecdb1a49842357761f
http://arxiv.org/abs/1809.02793

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