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Publications (10)

cond-mat.supr-con2022

Collapse of Metallicity and High- $T_{c}$ Superconductivity in the High-Pressure phase of FeSe $_{0.89}$ S $_{0.11}$

Pascal Reiss, Alix McCollam, Zachary Zajicek +2

We investigate the high-pressure phase of the iron-based superconductor FeSe $_{0.89}$ S $_{0.11}$ using transport and tunnel diode oscillator studies. We construct detailed pressure-…

cond-mat.mtrl-sci2023

Quantum critical Bose gas in the two-dimensional limit in the honeycomb antiferromagnet YbCl $_{3}$ under magnetic fields

Yosuke Matsumoto, Simon Schnierer, Jan A. N. Bruin +5

BEC is a quantum phenomenon, where a macroscopic number of bosons occupy the lowest energy state and acquire coherence at low temperatures. It is realized not only in $^{4}$ He and di…

cond-mat.str-el2021

Signatures of a Quantum Griffiths Phase close to an Electronic Nematic Quantum Phase Transition

Pascal Reiss, David Graf, Amir A. Haghighirad +2

In the vicinity of a quantum critical point, quenched disorder can lead to a quantum Griffiths phase, accompanied by an exotic power-law scaling with a continuously varying dynamic…

cond-mat.str-el2020

Strong in-plane anisotropy in the electronic structure of fixed-valence $I^^{2}$ -LuAlB $_{4}$

Pascal Reiss, Jordan Baglo, Hong'En Tan +6

The origin of intrinsic quantum criticality in the heavy-fermion superconductor $I^^{2}$ -YbAlB $_{4}$ has been attributed to strong Yb valence fluctuations and its peculiar crystal struct…

cond-mat.str-el2022

Truncated mass divergence in a Mott metal

Konstantin Semeniuk, Hui Chang, Jordan Baglo +10

Metal-insulator transitions in clean, crystalline solids can be driven by two distinct mechanisms. In a conventional insulator, the charge carrier concentration vanishes, when an e…

cond-mat.str-el2013

Electronic Structure of LuRh2Si2: "Small" Fermi Surface Reference to YbRh2Si2

Sven Friedemann, Swee K Goh, Patrick M C Rourke +5

We present band structure calculations and quantum oscillation measurements on LuRh2Si2, which is an ideal reference to the intensively studied quantum critical heavy-fermion syste…

cond-mat.str-el2026

Magnetic field-driven phase switching in the antiferromagnetic Mott insulator Ca $_{3}$ (Ru $_{0.99}$ Ti $_{0.01}$ ) $_{2}$ O $_{7}$

Ksenia S. Rabinovich, Tim Priessnitz, Nils Gross +7

The study maps how magnetic fields induce phase transitions in a Ti‑doped Ca₃Ru₂O₇ Mott insulator, revealing a spin‑flop transition and a forced ferromagnetic metallic state for fi…

#antiferromagnetism#mott insulator#spin-flop transition#magnetic field effects

cond-mat.supr-con2023

Unconventional crystal structure of the high-pressure superconductor La $_{3}$ Ni $_{2}$ O $_{7}$

Pascal Puphal, Pascal Reiss, Niklas Enderlein +14

The discovery of high-temperature superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$ at pressures above 14 GPa has spurred extensive research efforts. Yet, fundamental aspects of the supercond…

cond-mat.supr-con2020

Competing pairing interactions responsible for the large upper critical field in a stoichiometric iron-based superconductor, CaKFe $_{4}$ As $_{4}$

Matthew Bristow, William Knafo, Pascal Reiss +4

The upper critical field of multiband superconductors is an important quantity that can reveal the details about the nature of the superconducting pairing. Here we experimentally m…

cond-mat.str-el2015

Unconventional superconductivity in the layered iron germanide YFe $_{2}$ Ge $_{2}$

Jiasheng Chen, Konstantin Semeniuk, Zhuo Feng +5

Since the discovery of superconductivity in LaFePO in 2006, numerous iron-based superconductors have been identified within diverse structure families, all of which combine iron wi…

Publications (10)

Collapse of Metallicity and High-Tc​ Superconductivity in the High-Pressure phase of FeSe0.89​S0.11​

Quantum critical Bose gas in the two-dimensional limit in the honeycomb antiferromagnet YbCl3​ under magnetic fields

Signatures of a Quantum Griffiths Phase close to an Electronic Nematic Quantum Phase Transition

Strong in-plane anisotropy in the electronic structure of fixed-valence I^2-LuAlB4​

Truncated mass divergence in a Mott metal

Electronic Structure of LuRh2Si2: "Small" Fermi Surface Reference to YbRh2Si2

Magnetic field-driven phase switching in the antiferromagnetic Mott insulator Ca3​(Ru0.99​Ti0.01​)2​O7​

Unconventional crystal structure of the high-pressure superconductor La3​Ni2​O7​

Competing pairing interactions responsible for the large upper critical field in a stoichiometric iron-based superconductor, CaKFe4​As4​