Goethe University Frankfurt

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19922026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing cond-mat.str-elShow all

437 papers · 1 filter

cond-mat.str-el2026

Photoemission insights into lanthanide-based crystals

Dmitry Yu. Usachov, Georg Poelchen, Vasily S. Stolyarov +3

The interplay of strongly localized 4 $f$ electrons with itinerant spd-valence states gives rise to a wide range of correlated phenomena and properties that place lanthanide materia…

cond-mat.str-el2026

Probing multipolar order in the candidate altermagnet MnF $_{2}$ through the elastocaloric effect under strain

Rahel Ohlendorf, Luca Buiarelli, Hilary M. L. Noad +5

Altermagnets break a combination of time-reversal and rotational symmetries without generating a net magnetization. As such, the order parameter of $d$ -wave altermagnets has the sa…

cond-mat.str-el2025

$α$ -RuCl $_{3}$ intercalated into graphite: a new three-dimensional platform for exotic quantum phases

Aleksandar Razpopov, Shirin Mozaffari, Takahiro Matsuoka +5

Multilayer graphene with different stacking sequences has emerged as a powerful setting for correlated and topological phases. In parallel, progress in graphene heterostructures wi…

cond-mat.str-el2025

Growth-Controlled Twinning and Magnetic Anisotropy in CeSb $_{2}$

Jan T. Weber, Kristin Kliemt, Sergey L. Bud'ko +2

Cerium diantimonide (CeSb $_{2}$ ) is a layered heavy-fermion Kondo lattice material that hosts complex magnetism and pressure-induced superconductivity. The interpretation of its in-p…

cond-mat.str-el2025★ 3 cited

Strongly Entangled Kondo and Kagome Lattices and the Emergent Magnetic Ground State in Heavy-Fermion Kagome Metal YbV $_{6}$ Sn $_{6}$

Rui Lou, Max Mende, Riccardo Vocaturo +31

Applying angle-resolved photoemission spectroscopy and density functional theory calculations, we present compelling spectroscopic evidence demonstrating the intertwining and mutua…

cond-mat.str-el2025★ 1 cited

Interplay between many-body correlations, strain and lattice relaxation in twisted bilayer graphene

Lorenzo Crippa, Gautam Rai, Dumitru Călugăru +6

In twisted bilayer graphene, a unified understanding of the mechanisms governing temperature-dependent electronic spectra and thermodynamic properties remains controversial despite…

cond-mat.str-el2025★ 1 cited

Phonon spectrum in the spin-Peierls phase of CuGeO $_{3}$

L. Spitz, A. Razpopov, S. Biswas +10

CuGeO $_{3}$ has long been studied as a prototypical example of the spin-Peierls transition in a $S = 1/2$ Heisenberg chain. Despite intensive investigation of this quasi-one-dimensio…

cond-mat.str-el2025★ 2 cited

Quantum fluctuations in two-dimensional altermagnets

Niklas Cichutek, Peter Kopietz, Andreas Rückriegel

The magnetic properties of two-dimensional altermagnets can be obtained from a square lattice Heisenberg model with antiferromagetic nearest neighbor interaction and two types of n…

cond-mat.str-el2025

Tuning Incommensurate Charge Order in Ba $_{1 - x}$ Sr $_{x}$ Al $_{4}$ and Ba $_{1 - y}$ Eu $_{y}$ Al $_{4}$

Prathum Saraf, Eleanor M. Clements, Danila Sokratov +14

The BaAl $_{4}$ -type structure family is home to a vast landscape of interesting and exotic properties, with descendant crystal structures hosting a variety of electronic ground state…

cond-mat.str-el2025★ 1 cited

Exact downfolding and its perturbative approximation

Jonas B. Profe, Jakša Vučičević, P. Peter Stavropoulos +3

Solving the many-electron problem, even approximately, is one of the most challenging and simultaneously most important problems in contemporary condensed matter physics with vario…

cond-mat.str-el2025★ 1 cited

Site-polarized Mott phases competing with a correlated metal in twisted WSe $_{2}$

Siheon Ryee, Lennart Klebl, Gautam Rai +9

Twisted WSe $_{2}$ hosts superconductivity, metal-insulator phase transitions, and field-controllable Fermi-liquid to non-Fermi-liquid transport properties. In this work, we use dynam…

cond-mat.str-el2025★ 4 cited

Microscopic origin of the magnetic interactions and their experimental signatures in altermagnetic La $_{2}$ O $_{3}$ Mn $_{2}$ Se $_{2}$

Laura Garcia-Gassull, Aleksandar Razpopov, Panagiotis Peter Stavropoulos +2

Altermagnets (AM) are a recently introduced type of magnets, with no net magnetization like antiferromagnets, but displaying a non-relativistic Zeeman splitting in reciprocal space…

cond-mat.str-el2025★ 1 cited

Electronic structure dimensionality of the quantum-critical ferromagnet YbNi $_{4}$ P $_{2}$

J. Dai, A. Antezak, W. Broad +15

YbNi $_{4}$ P $_{2}$ is the first known ferromagnetic metal showing a second-order quantum phase transition. Current theoretical understanding rules out second order ferromagnetic quantum…

cond-mat.str-el2025★ 23 cited

Altermagnetic splitting of magnons in hematite ( $α$ -Fe $_{2}$ O $_{3}$ )

Rhea Hoyer, P. Peter Stavropoulos, Aleksandar Razpopov +3

We develop a four-sublattice spin-wave theory for the $g$ -wave altermagnet candidate hematite ( $α$ -Fe $_{2}$ O $_{3}$ ), considering both its easy-axis phase below and its weak ferromagnet…

cond-mat.str-el2025★ 1 cited

Observation of Two Cascading Screening Processes in an Iron-based Superconductor

Ming-Hua Chang, Steffen Backes, Donghui Lu +8

Understanding how renormalized quasiparticles emerge in strongly correlated electron materials provides a challenge for both experiment and theory. It has been predicted that disti…

cond-mat.str-el2025★ 8 cited

Spontaneous magnon decay in two-dimensional altermagnets

Niklas Cichutek, Peter Kopietz, Andreas Rückriegel

We show that magnons in two-dimensional altermagnets can spontaneously decay at zero temperature. The decay rate is determined by quantum fluctuations and scattering processes invo…

cond-mat.str-el2025

Emergence of a Fluctuating Ground State in Y-kapellasite under Pressure

Dipranjan Chatterjee, Petr Doležal, Federico Abbruciati +17

Y-kapellasite (Y $_{3}$ Cu $_{9}$ (OH) $_{19}$ Cl $_{8}$ ), which hosts an original anisotropic kagome sublattice, is a promising candidate for studying elusive and complex correlated physics. I…

cond-mat.str-el2025★ 15 cited

The Saga of $α$ -RuCl $_{3}$ : Parameters, Models, and Phase Diagrams

Marius Möller, P. A. Maksimov, Shengtao Jiang +3

RuCl $_{3}$ was likely the first ever deliberately synthesized ruthenium compound, following the discovery of the $_{44}$ Ru element in 1844. For a long time it was known as an oxidati…

cond-mat.str-el2025

Dominant end-tunneling effect in two distinct Luttinger liquids coexisting in one quantum wire

Henok Weldeyesus, Pedro M. T. Vianez, Omid Sharifi Sedeh +10

Luttinger liquids occupy a special place in physics as the most understood case of essentially quantum many-body systems. The experimental mission of measuring its main prediction,…

cond-mat.str-el2025

Plasmon-sound hybridization in ionic crystals

Jakob Rappolt, Andreas Rückriegel, Peter Kopietz

We study the hybridization between plasmons, phonons, and electronic sound in ionic crystals using the Debye model, where the ionic background is modeled as a homogeneous, isotropi…

cond-mat.str-el2024★ 9 cited

Exploring d-Wave Magnetism in Cuprates from Oxygen Moments

Ying Li, Valentin Leeb, Krzysztof Wohlfeld +2

The antiferromagnetic parent phase of high-T $_{c}$ cuprates has been established as a Néel state of copper moments, but early work pointed out the important role of ligand oxygen orb…

cond-mat.str-el2024★ 2 cited

Lattice dynamics of the frustrated kagome compound Y-kapellasite

P. Doležal, T. Biesner, Y. Li +6

Studying the magnetic ground states of frustrated antiferromagnets provides unique insight into the stability of quantum spin liquids, even if the anticipated state is not realized…

cond-mat.str-el2024★ 5 cited

Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu $_{5}$ In $_{2}$ Sb $_{6}$

H. Dawczak-Dębicki, M. Victoria Ale Crivillero, M. S. Cook +6

Materials exhibiting electronic inhomogeneities at the nanometer scale have enormous potential for applications. Magnetic polarons are one such type of inhomogeneity which link the…

cond-mat.str-el2024★ 2 cited

Dispersion kinks from electronic correlations in an unconventional iron-based superconductor

Ming-Hua Chang, Steffen Backes, Donghui Lu +7

The attractive interaction in conventional BCS superconductors is provided by a bosonic mode. However, the pairing glue of most unconventional superconductors is unknown. The effec…

Photoemission insights into lanthanide-based crystals

Probing multipolar order in the candidate altermagnet MnF2​ through the elastocaloric effect under strain

α-RuCl3​ intercalated into graphite: a new three-dimensional platform for exotic quantum phases

Growth-Controlled Twinning and Magnetic Anisotropy in CeSb2​

Strongly Entangled Kondo and Kagome Lattices and the Emergent Magnetic Ground State in Heavy-Fermion Kagome Metal YbV6​Sn6​

Interplay between many-body correlations, strain and lattice relaxation in twisted bilayer graphene

Phonon spectrum in the spin-Peierls phase of CuGeO3​

Quantum fluctuations in two-dimensional altermagnets

Tuning Incommensurate Charge Order in Ba1−x​Srx​Al4​ and Ba1−y​Euy​Al4​

Exact downfolding and its perturbative approximation

Site-polarized Mott phases competing with a correlated metal in twisted WSe2​

Microscopic origin of the magnetic interactions and their experimental signatures in altermagnetic La2​O3​Mn2​Se2​

Electronic structure dimensionality of the quantum-critical ferromagnet YbNi4​P2​

Altermagnetic splitting of magnons in hematite (α-Fe2​O3​)

Observation of Two Cascading Screening Processes in an Iron-based Superconductor

Spontaneous magnon decay in two-dimensional altermagnets

Emergence of a Fluctuating Ground State in Y-kapellasite under Pressure

The Saga of α-RuCl3​: Parameters, Models, and Phase Diagrams

Dominant end-tunneling effect in two distinct Luttinger liquids coexisting in one quantum wire

Plasmon-sound hybridization in ionic crystals

Exploring d-Wave Magnetism in Cuprates from Oxygen Moments

Lattice dynamics of the frustrated kagome compound Y-kapellasite

Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu5​In2​Sb6​

Dispersion kinks from electronic correlations in an unconventional iron-based superconductor

Probing multipolar order in the candidate altermagnet MnF $_{2}$ through the elastocaloric effect under strain

$α$ -RuCl $_{3}$ intercalated into graphite: a new three-dimensional platform for exotic quantum phases

Growth-Controlled Twinning and Magnetic Anisotropy in CeSb $_{2}$

Strongly Entangled Kondo and Kagome Lattices and the Emergent Magnetic Ground State in Heavy-Fermion Kagome Metal YbV $_{6}$ Sn $_{6}$

Phonon spectrum in the spin-Peierls phase of CuGeO $_{3}$

Tuning Incommensurate Charge Order in Ba $_{1 - x}$ Sr $_{x}$ Al $_{4}$ and Ba $_{1 - y}$ Eu $_{y}$ Al $_{4}$

Site-polarized Mott phases competing with a correlated metal in twisted WSe $_{2}$

Microscopic origin of the magnetic interactions and their experimental signatures in altermagnetic La $_{2}$ O $_{3}$ Mn $_{2}$ Se $_{2}$

Electronic structure dimensionality of the quantum-critical ferromagnet YbNi $_{4}$ P $_{2}$

Altermagnetic splitting of magnons in hematite ( $α$ -Fe $_{2}$ O $_{3}$ )

The Saga of $α$ -RuCl $_{3}$ : Parameters, Models, and Phase Diagrams

Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu $_{5}$ In $_{2}$ Sb $_{6}$