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Employment (2)

Institute of Photonic Sciences: Barcelona, ES

2019-01-25 to present | Research fellow (Quantum Nano-Optoelectronics)
Employment
Source: Self-asserted source
Roshan Krishna Kumar

University of Manchester: Manchester, GB

2017-11-02 to 2019-01-09 | Post-doctoral researcher (Condensed Matter Physics)
Employment
Source: Self-asserted source
Roshan Krishna Kumar

Education and qualifications (2)

Lancaster University: Lancaster, GB

2013-09-16 to 2017-11-12 | PhD (Physics)
Education
Source: Self-asserted source
Roshan Krishna Kumar

University of Bristol: Bristol, GB

2009-09-06 to 2013-06-11 | Masters in Physics with Industrial Experience (Physics)
Education
Source: Self-asserted source
Roshan Krishna Kumar

Works (22)

Engineering high quality graphene superlattices via ion milled ultra-thin etching masks

Nature Communications
2022-11 | Journal article
DOI: 10.1038/s41467-022-34734-3
Part of ISSN: 2041-1723
Contributors: David Barcons Ruiz; Hanan Herzig Sheinfux; Rebecca Hoffmann; Iacopo Torre; Hitesh Agarwal; Roshan Krishna Kumar; Lorenzo Vistoli; Takashi Taniguchi; Kenji Watanabe; Adrian Bachtold et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Out-of-equilibrium criticalities in graphene superlattices

Science
2022-01 | Journal article
DOI: 10.1126/science.abi8627
Part of ISSN: 0036-8075
Contributors: Alexey I. Berdyugin; Na Xin; Haoyang Gao; Sergey Slizovskiy; Zhiyu Dong; Shubhadeep Bhattacharjee; P. Kumaravadivel; Shuigang Xu; L. A. Ponomarenko; Matthew Holwill et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Graphene’s non-equilibrium fermions reveal Doppler-shifted magnetophonon resonances accompanied by Mach supersonic and Landau velocity effects

Nature Communications
2021-11-04 | Journal article
DOI: 10.1038/s41467-021-26663-4
Part of ISSN: 2041-1723
Contributors: M. T. Greenaway; P. Kumaravadivel; J. Wengraf; L. A. Ponomarenko; A. I. Berdyugin; J. Li; J. H. Edgar; R. Krishna Kumar; A. K. Geim; L. Eaves
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Magnetization Signature of Topological Surface States in a Non‐Symmorphic Superconductor

Advanced Materials
2021-08-08 | Journal article
DOI: 10.1002/adma.202103257
Part of ISSN: 0935-9648
Contributors: Wenjun Kuang; Guillermo Lopez‐Polin; Hyungjun Lee; Francisco Guinea; George Whitehead; Ivan Timokhin; Alexey I. Berdyugin; Roshan Krishna Kumar; Oleg V. Yazyev; Niels Walet et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Nano-imaging photoresponse in a moiré unit cell of minimally twisted bilayer graphene

Nature Communications
2021-03 | Journal article
DOI: 10.1038/s41467-021-21862-5
Part of ISSN: 2041-1723
Contributors: Niels C. H. Hesp; Iacopo Torre; David Barcons-Ruiz; Hanan Herzig Sheinfux; Kenji Watanabe; Takashi Taniguchi; Roshan Krishna Kumar; Frank H. L. Koppens
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Long-range ballistic transport of Brown-Zak fermions in graphene superlattices

Nature Communications
2020-11 | Journal article
DOI: 10.1038/s41467-020-19604-0
Part of ISSN: 2041-1723
Contributors: Julien Barrier; Piranavan Kumaravadivel; Roshan Krishna Kumar; L. A. Ponomarenko; Na Xin; Matthew Holwill; Ciaran Mullan; Minsoo Kim; R. V. Gorbachev; M. D. Thompson et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Control of electron-electron interaction in graphene by proximity screening

Nature Communications
2020-05-11 | Journal article
DOI: 10.1038/s41467-020-15829-1
Part of ISSN: 2041-1723
Contributors: M. Kim; S. G. Xu; A. I. Berdyugin; A. Principi; S. Slizovskiy; N. Xin; P. Kumaravadivel; W. Kuang; M. Hamer; R. Krishna Kumar et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Minibands in twisted bilayer graphene probed by magnetic focusing

Science Advances
2020-04 | Journal article
DOI: 10.1126/sciadv.aay7838
Part of ISSN: 2375-2548
Contributors: A. I. Berdyugin; B. Tsim; P. Kumaravadivel; S. G. Xu; A. Ceferino; A. Knothe; R. Krishna Kumar; T. Taniguchi; K. Watanabe; A. K. Geim et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Magnetophonon spectroscopy of Dirac fermion scattering by transverse and longitudinal acoustic phonons in graphene

Physical Review B
2019-10-10 | Journal article
DOI: 10.1103/physrevb.100.155120
Part of ISSN: 2469-9950
Contributors: M. T. Greenaway; R. Krishna Kumar; P. Kumaravadivel; A. K. Geim; L. Eaves
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Giant oscillations in a triangular network of one-dimensional states in marginally twisted graphene

Nature Communications
2019-09-05 | Journal article
DOI: 10.1038/s41467-019-11971-7
Part of ISSN: 2041-1723
Contributors: S. G. Xu; A. I. Berdyugin; P. Kumaravadivel; F. Guinea; R. Krishna Kumar; D. A. Bandurin; S. V. Morozov; W. Kuang; B. Tsim; S. Liu et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Strong magnetophonon oscillations in extra-large graphene

Nature Communications
2019-07 | Journal article
DOI: 10.1038/s41467-019-11379-3
Part of ISSN: 2041-1723
Contributors: P. Kumaravadivel; M. T. Greenaway; D. Perello; A. Berdyugin; J. Birkbeck; J. Wengraf; S. Liu; J. H. Edgar; A. K. Geim; L. Eaves et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Measuring Hall viscosity of graphene’s electron fluid

Science
2019-04 | Journal article
DOI: 10.1126/science.aau0685
Part of ISSN: 0036-8075
Contributors: A. I. Berdyugin; S. G. Xu; F. M. D. Pellegrino; R. Krishna Kumar; A. Principi; I. Torre; M. Ben Shalom; T. Taniguchi; K. Watanabe; I. V. Grigorieva et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Excess resistivity in graphene superlattices caused by umklapp electron–electron scattering

Nature Physics
2018-10 | Journal article
DOI: 10.1038/s41567-018-0278-6
Part of ISSN: 1745-2473
Contributors: J. R. Wallbank; R. Krishna Kumar; M. Holwill; Z. Wang; G. H. Auton; J. Birkbeck; A. Mishchenko; L. A. Ponomarenko; K. Watanabe; T. Taniguchi et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Fluidity onset in graphene

Nature Communications
2018-10 | Journal article
DOI: 10.1038/s41467-018-07004-4
Part of ISSN: 2041-1723
Contributors: Denis A. Bandurin; Andrey V. Shytov; Leonid S. Levitov; Roshan Krishna Kumar; Alexey I. Berdyugin; Moshe Ben Shalom; Irina V. Grigorieva; Andre K. Geim; Gregory Falkovich
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

High-order fractal states in graphene superlattices

Proceedings of the National Academy of Sciences
2018-04 | Journal article
DOI: 10.1073/pnas.1804572115
Part of ISSN: 0027-8424
Contributors: R. Krishna Kumar; A. Mishchenko; X. Chen; S. Pezzini; G. H. Auton; L. A. Ponomarenko; U. Zeitler; L. Eaves; V. I. Fal’ko; A. K. Geim
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Superballistic flow of viscous electron fluid through graphene constrictions

Nature Physics
2017-08 | Journal article
DOI: 10.1038/nphys4240
Part of ISSN: 1745-2473
Contributors: R. Krishna Kumar; D. A. Bandurin; F. M. D. Pellegrino; Y. Cao; A. Principi; H. Guo; G. H. Auton; M. Ben Shalom; L. A. Ponomarenko; G. Falkovich et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices

Science
2017-07 | Journal article
DOI: 10.1126/science.aal3357
Part of ISSN: 0036-8075
Contributors: R. Krishna Kumar; X. Chen; G. H. Auton; A. Mishchenko; D. A. Bandurin; S. V. Morozov; Y. Cao; E. Khestanova; M. Ben Shalom; A. V. Kretinin et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

High electron mobility, quantum Hall effect and anomalous optical response in atomically thin InSe

Nature Nanotechnology
2016-11 | Journal article
DOI: 10.1038/nnano.2016.242
Part of ISSN: 1748-3387
Contributors: Denis A. Bandurin; Anastasia V. Tyurnina; Geliang L. Yu; Artem Mishchenko; Viktor Zólyomi; Sergey V. Morozov; Roshan Krishna Kumar; Roman V. Gorbachev; Zakhar R. Kudrynskyi; Sergio Pezzini et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Graphene Triangular Ballistic Rectifier: Fabrication and Characterisation

Journal of Electronic Materials
2016-09 | Journal article
DOI: 10.1007/s11664-016-4938-y
Part of ISSN: 0361-5235
Contributors: Gregory Auton; Roshan Krishna Kumar; Ernie Hill; Aimin Song
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Scaling approach to tight-binding transport in realistic graphene devices: The case of transverse magnetic focusing

Physical Review B
2016-09 | Journal article
DOI: 10.1103/physrevb.94.115441
Part of ISSN: 2469-9950
Contributors: M. Beconcini; S. Valentini; R. Krishna Kumar; G. H. Auton; A. K. Geim; L. A. Ponomarenko; M. Polini; F. Taddei
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Graphene ballistic nano-rectifier with very high responsivity

Nature Communications
2016-05 | Journal article
DOI: 10.1038/ncomms11670
Part of ISSN: 2041-1723
Contributors: Gregory Auton; Jiawei Zhang; Roshan Krishna Kumar; Hanbin Wang; Xijian Zhang; Qingpu Wang; Ernie Hill; Aimin Song
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Negative local resistance caused by viscous electron backflow in graphene

Science
2016-03-04 | Journal article
DOI: 10.1126/science.aad0201
Part of ISSN: 0036-8075
Contributors: D. A. Bandurin; I. Torre; R. Krishna Kumar; M. Ben Shalom; A. Tomadin; A. Principi; G. H. Auton; E. Khestanova; K. S. Novoselov; I. V. Grigorieva et al.
Source: Self-asserted source
Roshan Krishna Kumar via Crossref Metadata Search

Peer review (5 reviews for 4 publications/grants)

Review activity for Light, science & applications. (1)
Review activity for Nature (1)
Review activity for Nature communications (1)
Review activity for Nature physics (2)
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