Tomas Löfwander

Biträdande professor at Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Projects

2012–2017

The Swedish Graphene Initiative

Mikael Fogelström Applied Quantum Physics
Floriana Lombardi Quantum Device Physics
Avgust Yurgens Quantum Device Physics
Herbert Zirath Microwave Electronics
Jan Stake Terahertz and Millimetre Wave Laboratory
Elsebeth Schröder Quantum Device Physics
Jari Kinaret Condensed Matter Theory
Sergey Kubatkin Quantum Device Physics
Tomas Löfwander Applied Quantum Physics
Eva Olsson Eva Olsson Group
Andreas Isacsson Condensed Matter Theory
Niklas Rorsman Microwave Electronics
Knut and Alice Wallenberg Foundation

2016–2020

Epitaxiell grafen för metrologi, sensorer och elektronik

Tomas Löfwander Applied Quantum Physics
Sergey Kubatkin Quantum Device Physics
Mikael Fogelström Microtechnology and Nanoscience (MC2)
Samuel Lara Avila Quantum Device Physics
Swedish Foundation for Strategic Research (SSF)

2011–2013

Superconducting spintronics with half-metallic ferromagnets

Tomas Löfwander Applied Quantum Physics
Swedish Research Council (VR)

There might be more projects where Tomas Löfwander participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

Shot noise in a harmonically driven ballistic graphene transistor

Yevgeniy Korniyenko, O. Shevtsov, Tomas Löfwander et al
Physical Review B - Condensed Matter and Materials Physics. Vol. 95 (16)
Scientific journal article - peer reviewed
2017

Impurity scattering and size quantization effects in a single graphene nanoflake

J. Tesch, P. Leicht, F. Blumenschein et al
Physical Review B. Vol. 95 (7)
Scientific journal article - peer reviewed
2016

Nonlinear response of a ballistic graphene transistor with an ac-driven gate: High harmonic generation and terahertz detection

Yevgeniy Korniyenko, O. Shevtsov, Tomas Löfwander et al
Physical review B. Vol. 94 (12), p. Art no 125445
Scientific journal article - peer reviewed
2016

Spin-polarized currents and noise in normal-metal/superconductor junctions with Yu-Shiba-Rusinov impurities

Daniel Persson, Oleksii Shevtsov, Tomas Löfwander et al
Physical Review B. Condensed Matter and Materials Physics. Vol. 94, p. 155424
Scientific journal article - peer reviewed
2016

Hot spot formation in electron-doped PCCO nanobridges

Sophie Charpentier, Riccardo Arpaia, J. Gaudet et al
Physical Review B - Condensed Matter and Materials Physics. Vol. 94 (6)
Scientific journal article - peer reviewed
2016

Resonant second-harmonic generation in a ballistic graphene transistor with an ac-driven gate

Yevgeniy Korniyenko, Oleksii Shevtsov, Tomas Löfwander et al
Physical Review B. Vol. 93 (3)
Scientific journal article - peer reviewed
2015

Spectral properties of superconductors with ferromagnetically ordered magnetic impurities

Daniel Persson, Oleksii Shevtsov, Tomas Löfwander et al
Physical Review B. Condensed Matter and Materials Physics. Vol. 92 (24), p. 245430
Scientific journal article - peer reviewed
2015

Spontaneously broken time-reversal symmetry in high-temperature superconductors

Mikael Håkansson, Tomas Löfwander, Mikael Fogelström et al
Nature Physics. Vol. 11 (9), p. 755-760
Scientific journal article - peer reviewed
2015

Influence of 0001 tilt grain boundaries on the destruction of the quantum Hall effect in graphene

Anders Bergvall, J. M. Carlsson, Tomas Löfwander et al
Physical Review B. Condensed Matter and Materials Physics. Vol. 91 (24)
Scientific journal article - peer reviewed
2015

Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems

A. C. Ferrari, F. Bonaccorso, V. Fal'ko et al
Nanoscale. Vol. 7 (11), p. 4598-4810
Scientific journal article - peer reviewed
2014

Quasiclassical Theory of Spin Imbalance in a Normal Metal-Superconductor Heterostructure with a Spin-Active Interface

Oleksii Shevtsov, Tomas Löfwander,
Journal of Physics Conference Series: 27th International Conference on Low Temperature Physics (LT). Vol. 568 (2), p. 022044
Conference paper - peer reviewed
2014

Spin imbalance in hybrid superconducting structures with spin-active interfaces

Oleksii Shevtsov, Tomas Löfwander,
Physical Review B. Vol. 90 (8), p. 085432
Scientific journal article - peer reviewed
2013

Andreev spectroscopy of CrO2 thin films on TiO2 and Al2O3

K.A. Yates, M.S. Anwar, J.F.M. Aarts et al
EPL. Vol. 103 (6)
Scientific journal article - peer reviewed
2013

Inverse proximity effect and influence of disorder on triplet supercurrents in strongly spin-polarized ferromagnets

R. Grein, Tomas Löfwander, M. Eschrig et al
Physical Review B. Vol. 88 (5)
Scientific journal article - peer reviewed
2013

Spectral footprints of impurity scattering in graphene nanoribbons

Anders Bergvall, Tomas Löfwander,
Physical Review B. Condensed Matter and Materials Physics. Vol. 87 (20)
Scientific journal article - peer reviewed
2013

Quantum Hall effect in graphene with twisted bilayer stripe defects

Tomas Löfwander, P. San-Jose, E. Prada et al
Physical Review B. Condensed Matter and Materials Physics. Vol. 87 (20)
Scientific journal article - peer reviewed
2011

Graphene nanogap for gate-tunable quantum-coherent single-molecule electronics

Anders Bergvall, Kristian Berland, Per Hyldgaard et al
Physical Review B. Vol. 84 (15)
Scientific journal article - peer reviewed
2010

Is CrO2 Fully Spin Polarized? Analysis of Andreev Spectra and Excess Current

Tomas Löfwander, R. Grein, M. Eschrig et al
Physical Review Letters. Vol. 105 (20)
Scientific journal article - peer reviewed
2010

Theory of superconductor-ferromagnet point-contact spectra: The case of strong spin polarization

R. Grein, Tomas Löfwander, G. Metalidis et al
Physical Review B. Vol. 81 (9), p. Art. no. 094508
Scientific journal article - peer reviewed
2008

0-pi Transitions in a Superconductor/Chiral Ferromagnet/Superconductor Junction Induced by a Homogeneous Cycloidal Spiral

Thierry Champel, Tomas Löfwander, Matthias Eschrig et al
Physical Review Letters. Vol. 100, p. 077003
Scientific journal article - peer reviewed
2008

Triplet supercurrents in clean and disordered half-metallic ferromagnets

Matthias Eschrig, Tomas Löfwander,
Nature Physics. Vol. 4, p. 138
Scientific journal article - peer reviewed
2008

Spectrum of Andreev Bound States in a Molecule Embedded Inside a Microwave-Excited Superconducting Junction

Jonas Sköldberg, Tomas Löfwander, Vitaly Shumeiko et al
Physical Review Letters. Vol. 101, p. 087002
Scientific journal article - peer reviewed
2007

Impurity scattering and Mott's formula in graphene

Tomas Löfwander, Mikael Fogelström,
Physical Review B. Vol. 76, p. 193401
Scientific journal article - peer reviewed
2007

Phase diagrams of ferromagnet-superconductor multilayers with misaligned exchange fields

Tomas Löfwander, Thierry Champel, Matthias Eschrig et al
Physical Review B. Vol. 75, p. 014512
Scientific journal article - peer reviewed
2006

Large Thermoelectric Effects and Inelastic Scattering in Unconventional Superconductors

Mikael Fogelström, Tomas Löfwander,
AIP Conference Proceedings. Vol. 850, p. 567
Scientific journal article - peer reviewed
2006

Low­Temperature Thermal Conductivity of Superconductors With Gap Nodes

Tomas Löfwander, Mikael Fogelström,
AIP Conference Proceedings. Vol. 850, p. 569
Scientific journal article - peer reviewed
2006

Observation of periodic pi-phase shifts in ferromagnet-superconductor multilayers

V Shelukhin, A Tsukernik, M Karpovski et al
Physical Review B. Vol. 73, p. 174506
Scientific journal article - peer reviewed
2005

Low-temperature thermal conductivity of superconductors with gap nodes

Tomas Löfwander, Mikael Fogelström,
Physical Review Letters. Vol. 95, p. 107006
Scientific journal article - peer reviewed
2004

Large Thermoelectric Effects in Unconventional Superconductors.

Tomas Löfwander, Mikael Fogelström,
Physical Review B. Vol. 70 (2), p. 024515
Scientific journal article - peer reviewed
2001

Transport Properties of Superconducting d-wave junctions

Tomas Löfwander,
Doctoral thesis
1998

AC Josephson effect in superconducting d-wave junctions

Tomas Löfwander,
Licentiate thesis