132 citations · 679 across the 24 of their papers we have counts for
24 papers
Nematicity in LaFeAsO single crystals studied by elastoresistance, high-resolution thermal expansion and shear-modulus measurements
X. C. Hong, S. Sauerland, L. Wang +10
Nematicity in LaFeAsO single crystals is studied by means of high-resolution thermal expansion, shear modulus, and elastoresistivity measurements. A softening of the shear modulus…
Inhomogeneity-driven multiform Spontaneous Hall Effect in conventional and unconventional superconductors
Nadia Stegani, Ilaria Pallecchi, Nicola Manca +10
The spontaneous Hall effect (SHE), a finite voltage occurring transversal to the electrical current in zero-magnetic field, has been observed in both conventional and unconventiona…
Evidence of pseudogap and absence of spin magnetism in the time-reversal-symmetry-breaking state of BaKFeAs
Florian Bärtl, Nadia Stegani, Federico Caglieris +13
Muon-spin-rotation (SR) experiments and the observation of a spontaneous Nernst effect indicate time-reversal symmetry breaking (BTRS) at above the supercon…
Large Nernst effect in Te-based van der Waals materials
M. Behnami, M. Gillig, A. G. Moghaddam +14
Layered van der Waals tellurides reveal topologically non-trivial properties that give rise to unconventional magneto-transport phenomena. Additionally, their semimetallic characte…
Dissipationless transport signature of topological nodal lines
Arthur Veyrat, Klaus Koepernik, Louis Veyrat +12
Topological materials, such as topological insulators or semimetals, usually not only reveal the nontrivial properties of their electronic wavefunctions through the appearance of s…
Room temperature Planar Hall effect in nanostructures of trigonal-PtBi2
Arthur Veyrat, Klaus Koepernik, Louis Veyrat +13
Trigonal-PtBi2 has recently garnered significant interest as it exhibits unique superconducting topological surface states due to electron pairing on Fermi arcs connecting bulk Wey…
Ultrasound evidence for multicomponent superconducting order parameter in BaKFeAs with electron quadrupling phase
Chris Halcrow, Ilya Shipulin, Federico Caglieris +6
Experiments have pointed to the formation of the electron quadrupling condensate in BaKFeAs at . The state spontaneously breaks time-reversal symmet…
Calorimetric evidence for two phase transitions in BaKFeAs with fermion pairing and quadrupling states
Ilya Shipulin, Nadia Stegani, Ilaria Maccari +9
Theoretically, materials that break multiple symmetries allow, under certain conditions, the formation of four-fermion condensates above the superconducting critical temperature. S…
Elastoresistivity of heavily hole doped 122 iron pnictides superconductors
Xiaochen Hong, Steffen Sykora, Federico Caglieris +8
Nematicity in the heavily hole-doped iron pnictide superconductors remains controversial. Sizeable nematic fluctuations and even nematic orders far from a magnetic instability were…
Ubiquitous enhancement of nematic fluctuations across the phase diagram of iron based superconductors probed by the Nernst effect
Christoph Wuttke, Federico Caglieris, Steffen Sykora +11
The role of nematic fluctuations for unconventional superconductivity has been subject of intense discussions for many years. In iron-based superconductors, the most established pr…
Absence of nematic instability in LiFeAs
Michael Wissmann, Federico Caglieris, Xiaochen Hong +5
The relationship between unconventional superconductivity, antiferromagnetism and nematic order in iron-based superconductors (FeSCs) is still highly debated. In many FeSCs superco…
Quartic metal: Spontaneous breaking of time-reversal symmetry due to four-fermion correlations in BaKFeAs
Vadim Grinenko, Daniel Weston, Federico Caglieris +19
Discoveries of ordered quantum states of matter are of great fundamental interest, and often lead to unique applications. The most well known example -- superconductivity -- is cau…
Revisiting the phase diagram of LaFeCoAsO on single crystals by thermodynamic methods
Francesco Scaravaggi, Sven Sauerland, Liran Wang +13
In this work we revisit the phase diagram of Co-doped LaFeAsO using single crystals and thermodynamic methods. From magnetic susceptibility studies we track the doping evolution of…
Berezinskii-Kosterlitz-Thouless transition in the type-I Weyl semimetal PtBi
Arthur Veyrat, Valentin Labracherie, Dima L. Bashlakov +12
Symmetry breaking in topological matter has become in recent years a key concept in condensed matter physics to unveil novel electronic states. In this work, we predict that broken…
High-field thermal transport properties of the Kitaev quantum magnet alpha-RuCl3: evidence for low-energy excitations beyond the critical field
Richard Hentrich, Xiaochen Hong, Matthias Gillig +11
We investigate the phononic in-plane longitudinal low-temperature thermal conductivity kappa_ab of the Kitaev quantum magnet alpha-RuCl3 for large in-plane magnetic fields up to 33…
Polymorphic PtBi2: Growth, structure and superconducting properties
G. Shipunov, I. Kovalchuk, B. R. Piening +13
PtBi is a polymorphic system with interesting electronic properties. Here we report optimized crystal growth and structural characterization of pyrite-type and trigonal modific…
A hydrodynamical description for magneto-transport in the strange metal phase of Bi-2201
Andrea Amoretti, Martina Meinero, Daniel K. Brattan +7
High temperature superconductors are strongly coupled systems which present a complicated phase diagram with many coexisting phases. This makes it difficult to understand the mecha…
Evolution of the nematic susceptibility in LaFeCoAsO
Xiaochen Hong, Federico Caglieris, Rhea Kappenberger +8
The identification of electronic nematicity across series of iron-based superconductors raises the question of its relationship with superconductivity and other ordered states. Her…
Topological electronic structure and intrinsic magnetization in MnBiTe: a BiTe-derivative with a periodic Mn sublattice
Raphael C. Vidal, Alexander Zeugner, Jorge I. Facio +23
Combinations of non-trivial band topology and long-range magnetic order hold promise for realizations of novel spintronic phenomena, such as the quantum anomalous Hall effect and t…
Strain-derivative of thermoelectric properties: a sensitive probe for nematicity
Federico Caglieris, Christoph Wuttke, Xiaochen Hong +6
The nematic instability of iron-based superconductors is an undebatable ingredient of the physics of iron-based superconductors. Yet, its origin remains enigmatic as it involves a…
Berry curvature unravelled by the Nernst effect in MnGe
Christoph Wuttke, Federico Caglieris, Steffen Sykora +8
The discovery of topological quantum materials represents a striking innovation in modern condensed matter physics with remarkable fundamental and technological implications. Their…
Evidence of the isoelectronic character of F doping in SmFeAsO(1-x)F(x): a first-principles investigation
Fabio Bernardini, Federico Caglieris, Ilaria Pallecchi +1
We study the electronic structure of the SmFeAsO(1-x)F(x) alloy by means of first-principle calculations. We find that, contrary to common believe, F-doping does not change the cha…
Anomalous Nernst effect and field-induced Lifshitz transition in Weyl semimetals TaP and TaAs
Federico Caglieris, Christoph Wuttke, Steffen Sykora +5
The discovery of Weyl fermions in transition metal monoarsenides/phosphides without inversion symmetry represents an exceptional breakthrough in modern condensed matter physics. Ho…
Combined resistivity and Hall effect study on NaFeRhAs single crystals
Frank Steckel, Robert Beck, Maria Roslova +5
Electrical transport measurements are used to study the Rh-doped NaFeAs superconductor series with a focus on the tetragonal phase. The resistivity curvature has an anomalous tempe…