Toni Helm

activity

20102026

most citedMagnetic Breakdown in the electron-doped cuprate superconductor Nd

_{2 - x}

_{x}

CuO

_{4}

: the reconstructed Fermi surface survives in the strongly overdoped regime

71 citations · 150 across the 7 of their papers we have counts for

collaborators

7 papers

cond-mat.supr-con2026

Electron-Hole Scattering Dichotomy and Anisotropic Warping in Quasi-Two-Dimensional Fermi Surfaces of UTe2

Motoi Kimata, Jun Ishizuka, Freya Husstedt +13

We present a combined experimental and theoretical study of the detailed Fermi-surface (FS) geometry of UTe2, a heavy-fermion superconductor that has recently attracted considerabl…

cond-mat.supr-con2026

$H$ -linear magnetoresistance in the $T^{2}$ resistivity regime of overdoped infinite-layer nickelate La $_{1 - x}$ Sr $_{x}$ NiO $_{2}$

Yong-Cheng Pan, Tommy Kotte, Toni Helm +3

We report a systematic magnetotransport study on high-crystallinity La $_{1 - x}$ Sr $_{x}$ NiO $_{2}$ (LSNO) thin films with $x = 0.20 - 0.24$ . By conducting pulsed-field transport experiment…

cond-mat.str-el2025★ 2 cited

Slow magnetic quantum oscillations in the c-axis magnetoresistance of UTe $_{2}$

Freya Husstedt, Motoi Kimata, Sajal Naduvile Thadathil +8

Details of the electronic band structure in unconventional superconductors are key to the understanding of their fundamental ground state. The potential spin-triplet superconductor…

cond-mat.supr-con2016★ 21 cited

Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor Ta $_{4}$ Pd $_{3}$ Te $_{16}$

T. Helm, F. Flicker, R. Kealhofer +9

We study the intrinsic transport anisotropy and fermiology of the quasi one-dimensional superconductor Ta $_{4}$ Pd $_{3}$ Te $_{16}$ . Below $T^{*} = 20$ K we detect a thermodynamic phase trans…

cond-mat.str-el2014★ 47 cited

Correlation between Fermi surface transformations and superconductivity in the electron-doped high- $T_{c}$ superconductor Nd $_{2 - x}$ Ce $_{x}$ CuO $_{4}$

T. Helm, M. V. Kartsovnik, C. Proust +11

Two critical points have been revealed in the normal-state phase diagram of the electron-doped cuprate superconductor Nd $_{2 - x}$ Ce $_{x}$ CuO $_{4}$ by exploring the Fermi surface propert…

cond-mat.str-el2013★ 9 cited

Magnetic quantum oscillations in the charge-density-wave state of the organic metals $α$ -(BEDT-TTF) $_{2}$ MHg(SCN) $_{4}$ with M = K and Tl

M. V. Kartsovnik, V. N. Zverev, D. Andres +6

The low-temperature charge-density-wave (CDW) state in the layered organic metals $α$ -(BEDT-TTF) $_{2}$ MHg(SCN) $_{4}$ has been studied by means of the Shubnikov -- de Haas and de Haas -…

cond-mat.supr-con2010★ 71 cited

Magnetic Breakdown in the electron-doped cuprate superconductor Nd $_{2 - x}$ Ce $_{x}$ CuO $_{4}$ : the reconstructed Fermi surface survives in the strongly overdoped regime

T. Helm, M. V. Kartsovnik, I. Sheikin +8

We report on semiclassical angle-dependent magnetoresistance oscillations (AMRO) and the Shubnikov-de Haas effect in the electron-overdoped cuprate superconductor Nd $_{2 - x}$ Ce $_{x}$ C…

Electron-Hole Scattering Dichotomy and Anisotropic Warping in Quasi-Two-Dimensional Fermi Surfaces of UTe2

H-linear magnetoresistance in the T2 resistivity regime of overdoped infinite-layer nickelate La1−x​Srx​NiO2​

Slow magnetic quantum oscillations in the c-axis magnetoresistance of UTe2​

Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor Ta4​Pd3​Te16​

Correlation between Fermi surface transformations and superconductivity in the electron-doped high-Tc​ superconductor Nd2−x​Cex​CuO4​

Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)2​MHg(SCN)4​ with M = K and Tl