Publications (17)
Angle-resolved Landau spectrum of electrons and holes in bismuth
Zengwei Zhu, Benoit Fauque, Yuki Fuseya +1
In elemental bismuth, emptying the low-index Landau levels is accompanied by giant Nernst quantum oscillations. The Nernst response sharply peaks each time a Landau level intersect…
Landau spectrum and twin boundaries of bismuth in the extreme quantum limit
Zengwei Zhu, Benoit Fauque, Liam Malone +3
The Landau spectrum of bismuth is complex and includes many angle-dependent lines in the extreme quantum limit. The adequacy of single-particle theory to describe this spectrum in…
Scalable T^2 resistivity in a small single-component Fermi surface
Xiao Lin, Benoit Fauque, Kamran Behnia
Scattering among electrons generates a distinct contribution to electrical resistivity that follows a quadratic temperature dependence. In strongly-correlated electron systems, the…
Critical doping for the onset of a two-band superconducting ground state in SrTiO
Xiao Lin, German Bridoux, Adrien Gourgout +5
In doped SrTiO superconductivity persists down to an exceptionally low concentration of mobile electrons. This restricts the relevant energy window and possible pairing scena…
Phase diagram of bismuth in the extreme quantum limit
Huan Yang, Benoit Fauque, Liam Malone +4
Elemental bismuth provides a rare opportunity to explore the fate of a three-dimensional gas of highly mobile electrons confined to their lowest Landau level. Coulomb interaction,…
Multiple nodeless superconducting gaps in optimally-doped SrTiNbO
Xiao Lin, Adrien Gourgout, German Bridoux +5
We present the first study of thermal conductivity in superconducting SrTiNbO, sufficiently doped to be near its maximum critical temperature. The bulk critical…
Angle dependence of the orbital magnetoresistance in bismuth
Aurelie Collaudin, Benoit Fauque, Yuki Fuseya +2
We present an extensive study of angle-dependent transverse magnetoresistance in bismuth, with a magnetic field perpendicular to the applied electric current and rotating in three…
Fermi surface of the most dilute superconductor
Xiao Lin, Zengwei Zhu, Benoit Fauque +1
The origin of superconductivity in bulk SrTiO is a mystery, since the non-monotonous variation of the critical transition with carrier concentration defies the expectations o…
Nernst quantum oscillations in bulk semi-metals
Zengwei Zhu, Huan Yang, Aritra Banerjee +2
With a widely available magnetic field of 10 T, one can attain the quantum limit in bismuth and graphite. At zero magnetic field, these two elemental semi-metals host a dilute liqu…
An electronic instability in bismuth far beyond the quantum limit
Benoit Fauque, Baptiste Vignolle, Cyril Proust +2
We present a transport study of semi-metallic bismuth in presence of a magnetic field applied along the trigonal axis extended to 55 T for electric conductivity and to 45 T for the…
Field-induced polarisation of Dirac valleys in bismuth
Zengwei Zhu, Aurelie Collaudin, Benoit Fauque +2
Electrons are offered a valley degree of freedom in presence of particular lattice structures. Manipulating valley degeneracy is the subject matter of an emerging field of investig…
S-wave Superconductivity in Optimally Doped SrTiNbO Unveiled by Electron Irradiation
Xiao Lin, Carl Willem Rischau, Cornelis J. van der Beek +2
We report on a study of electric resistivity and magnetic susceptibility measurements in electron irradiated SrTiNbO single crystals. Point-like defects, in…
Quantum oscillations, thermoelectric coefficients and the Fermi surface of semi-metallic WTe2
Zengwei Zhu, Xiao Lin, Juan Liu +5
We present a study of angle-resolved quantum oscillations of electric and thermoelectric transport coefficients in semi-metallic WTe, which has the particularity of displayin…
Metallicity without quasi-particles in room-temperature strontium titanate
Xiao Lin, Carl Willem Rischau, Lisa Buchauer +3
Cooling oxygen-deficient strontium titanate to liquid-helium temperature leads to a decrease in its electrical resistivity by several orders of magnitude. The temperature dependenc…
Nernst effect and dimensionality in the quantum limit
Zengwei Zhu, Huan Yang, Benoit Fauque +2
Nernst effect, the transverse voltage generated by a longitudinal thermal gradient in presence of magnetic field has recently emerged as a very sensitive, yet poorly understood, pr…
Unveiling the double-peak structure of quantum oscillations in the specific heat
Zhuo Yang, Benoit Fauque, Toshihiro Nomura +12
Quantum oscillation phenomenon is an essential tool to understand the electronic structure of quantum matter. Here we report a systematic study of quantum oscillations in the elect…
Hall plateaus at magic angles in bismuth beyond the quantum limit
Benoit Fauque, Huan Yang, Ilya Sheikin +3
We present a study of the angular dependence of the resistivity tensor up to 35 T in elemental bismuth complemented by torque magnetometry measurements in a similar configuration.…