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19932026
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cond-mat.str-el2026

Electronic excitations in the Shastry-Sutherland compound SrCu(BO)

Tariq Leinen, Ola K. Forslund, Eugenio Paris +13

SrCu2(BO3)2 (SCBO) is a paradigmatic realization of the Shastry-Sutherland model, hosting geometrically frustrated spin dimers and a variety of quantum magnetic phases and phenomen…

cond-mat.str-el2026

ESR Investigations of the Magnetic Anisotropy in -(BETS)Mn[N(CN)]

Zhijie Huang, Marvin Schmidt, Savita Priya +3

The two-dimensional molecular conductor -(BETS)Mn[N(CN)] has been studied because of the intriguing magnetic coupling of the molecular -electrons to the Mn…

cond-mat.str-el2025★ 1 cited

Interlayer coupling driven phase evolution in hyperbolic -TaS

Achyut Tiwari, Bruno Gompf, Martin Dressel

Understanding how microscopic interactions control macroscopic phase transitions is central to quantum materials, where charge density waves (CDWs), Mott states, and superconductiv…

cond-mat.str-el2025★ 1 cited

Anomalous impurity-induced charge modulations in black phosphorus

Byeongin Lee, Junho Bang, Sayan Banerjee +6

We observe anomalous charge modulations induced by ionized indium impurities on the surface of the semiconductor black phosphorus by scanning tunneling microscopy (STM). When the i…

cond-mat.str-el2025★ 3 cited

Superconductivity of Incoherent Electrons near the Relativistic Mott Transition in Twisted Dirac Materials

Veronika C. Stangier, Mathias S. Scheurer, Daniel E. Sheehy +1

We demonstrate that superconductivity driven by strong quantum-critical fluctuations can emerge near relativistic Mott transitions in twisted two-dimensional materials, taking on a…

cond-mat.str-el2025

Charge-localization-driven metal-insulator phase transition in layered molecular conductors

Savita Priya, Maxim Wenzel, Olga Iakutkina +7

The organic conductor -(BEDT-TTF)I provides the prime example of a charge-order-driven metal-insulator transition. Restricted chemical substitution of S atoms by Se in t…

cond-mat.str-el2025★ 1 cited

Photoinduced Frustration Modulation in -type Quantum Spin Liquid Candidates

M. Tepie, F. Glerean, J. Ovčar +7

Geometric frustration is a key parameter controlling electronic and magnetic properties of quantum spin liquid systems, yet remains challenging to tune. Here, we coherently drive m…

cond-mat.str-el2025★ 5 cited

Altermagnetic polarons: the fate of alter magnetic band splittings at strong coupling

Maria Daghofer, Krzysztof Wohlfeld, Jeroen van den Brink

While a spin-dependent band splitting is one of the characteristic features of altermagnets, the conventional band picture itself breaks down in the many altermagnets that are corr…

cond-mat.str-el2025★ 2 cited

Finite-momentum pairing and superlattice superconductivity in valley-imbalanced rhombohedral graphene

Maine Christos, Pietro M. Bonetti, Mathias S. Scheurer

Inspired by the recent experimental discovery of superconductivity emerging from a time-reversal symmetry-breaking normal state in tetralayer rhombohedral graphene, we here investi…

cond-mat.str-el2025★ 1 cited

Exerting chemical pressure on the kagome lattice as frustration control in the kapellasite family Cu(OH)(Cl,Br)

Jonas Andreas Krieger, Thomas James Hicken, Hubertus Luetkens +2

The kapellasite family Cu(OH)(Cl,Br) forms a series of compounds, wherein the chemical pressure realized by the site cation tunes the spin exchange in th…

cond-mat.str-el2025★ 4 cited

Hund flat band in a frustrated spinel oxide

Dongjin Oh, Alexander Hampel, Joshua P. Wakefield +26

Electronic flat bands associated with quenched kinetic energy and heavy electron mass have attracted great interest for promoting strong electronic correlations and emergent phenom…

cond-mat.str-el2025

High-pressure modulation of breathing kagome lattice: Cascade of Lifshitz transitions and evolution of the electronic structure

Marcos V. Gonçalves-Faria, Maxim Wenzel, Yuk Tai Chan +12

The interplay between electronic correlations, density wave orders, and magnetism gives rise to several fascinating phenomena. In recent years, kagome metals have emerged as an exc…

cond-mat.str-el2025

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

Dipranjan Chatterjee, Petr Doležal, Federico Abbruciati +17

Y-kapellasite (YCu(OH)Cl), which hosts an original anisotropic kagome sublattice, is a promising candidate for studying elusive and complex correlated physics. I…

cond-mat.str-el2025★ 6 cited

Interplay of - and -states in RbTiBi and CsTiBi flat-band kagome metals

M. Wenzel, E. Uykur, A. A. Tsirlin +4

Shifting the Fermi level of the celebrated (135) compounds into proximity of flat bands strongly enhances electronic correlations and severely affects the formation of de…

cond-mat.str-el2024★ 2 cited

Physics-informed Transformers for Electronic Quantum States

João Augusto Sobral, Michael Perle, Mathias S. Scheurer

Neural-network-based variational quantum states in general, and more recently autoregressive models in particular, have proven to be powerful tools to describe complex many-body wa…

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

Chemo-Structural Disorder in the kagomé spin = 1/2 systems ZnCu(OH)Cl and YCu(OH)Br[Br(OH)]

Reinhard K. Kremer, Sebastian Bette, Jürgen Nuss +1

By single crystal diffraction we characterize the chemo-structural disorder introduced by Zn-Cu site mixing in the kagomé spin -1/2 systems herbertsmithite ZnCu(OH)Cl$_2…

cond-mat.str-el2024★ 6 cited

Magnetic ground state of the dimer-based hexagonal perovskite BaZnRuO

S. Hayashida, H. Gretarsson, P. Puphal +7

We investigate the magnetic ground state of single crystals of the ruthenium-dimer-based hexagonal perovskite BaZnRuO using magnetic susceptibility and resonant i…

cond-mat.str-el2024★ 1 cited

Gapped magnetic ground state in the spin-liquid candidate -(BEDT-TTF)Ag(CN) suggested by magnetic spectroscopy

Sudip Pal, Björn Miksch, Hans-Albrecht Krug von Nidda +10

The nature of the magnetic ground state of highly frustrated systems remained puzzling to this day. Here, we have performed multifrequency electron spin resonance (ESR) measurement…

cond-mat.str-el2024★ 9 cited

Fractionalized Altermagnets: from neighboring and altermagnetic spin-liquids to spin-symmetric band splitting

João Augusto Sobral, Subrata Mandal, Mathias S. Scheurer

We study quantum-fluctuation-driven fractionalized phases in the vicinity of altermagnetic order. First, the long-range magnetic orders in the vicinity of collinear altermagnetism…

cond-mat.str-el2024★ 1 cited

Electronic properties of the dimerized organic conductor -(BETS)Mn[N(CN)]

Marvin Schmidt, Savita Priya, Zhijie Huang +3

The two-dimensional molecular conductor -(BETS)Mn[N(CN)] undergoes a sharp metal-to-insulator phase transition at 21 K, which has been under scru…

cond-mat.str-el2024★ 3 cited

Closing of the Mott gap near step edges in NiS2

Yuuki Yasui, Kota Iwata, Shota Okazaki +5

A prototypical charge-transfer type Mott insulator NiS2 pyrite exhibits a metal-insulator transition with bandwidth control. Recent discoveries on surface-specific electronic state…

cond-mat.str-el2024★ 5 cited

A Novel Perspective on Ideal Chern Bands with Strong Short-Range Repulsion: Applications to Correlated Metals, Superconductivity, and Topological Order

Patrick H. Wilhelm, Andreas M. Läuchli, Mathias S. Scheurer

Motivated by recent experiments on correlated van der Waals materials, including twisted and rhombohedral graphene and twisted WSe, we perform an analytical and numerical study…

cond-mat.str-el2024★ 30 cited

Fluctuation induced piezomagnetism in local moment altermagnets

Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Maria Daghofer +1

It was recently discovered that, depending on their symmetries, collinear antiferromagnets may break spin degeneracy in momentum space, even in absence of spin-orbit coupling. Such…