Donostia International Physics Center

Electron spin resonance in scanning probe microscopy: From single‐spin spectroscopy to atomically engineered quantum operations

Abstract Electron spin resonance (ESR) is one of the most powerful spectroscopic methods for probing systems with unpaired electronic spins. Conventional ESR has usually relied on the detection of large spin ensembles, thereby averaging over local environments and suppressing mic...

Geometry-enforced topological chiral fermions in amorphous chiral metals

Since the prediction and observation of topological Weyl semimetals (chiral TSMs), there have been enormous efforts to characterize further condensed matter realizations of chiral fermions. These efforts were dramatically accelerated by the subsequent discovery of a profound link...

Order Parameter Discovery for Quantum Many-Body Systems

Quantum phase transitions reveal deep insights into the behavior of many-body quantum systems, but identifying these transitions without prior knowledge of order parameters remains a significant challenge. In this work, we introduce a method for constructing phase diagrams using...

Aspect Ratio of Gold Nanorods Indirectly Modulates the Performance of Plasmonic‐Photochromic Fibers: A Spectroscopic Study

ABSTRACT Plasmonic‐photochromic materials have been widely investigated to harness photoresponsive properties of both components, particularly in systems comprising gold nanoparticles (AuNPs) and azobenzenes (Azos). Although AuNPs affect Azo performance, there is no information o...

2D theoretically twistable material database

The study of twisted two-dimensional (2D) materials, in which twisting layers create moiré superlattices, has created opportunities for investigating topological phases and strongly correlated physics. The broader potential of a seemingly infinite set of twistable 2D materials re...

Two-dimensional topological quantum chemistry and catalog of topological materials

Two-dimensional (2D) topological materials host symmetry-protected, disorder-robust edge states central to quantum technologies. Yet they remain scarce compared with their 3D counterparts. We adapted the topological quantum chemistry formalism to layer groups and studied the band...

Porphyrin-Cross-Linked Unimolecular Polyglycerol Nanogels: Confinement-Controlled Metalation and Selective Cu2+ Detection

Abstract Unimolecular nanogels (NGs) based on (hyper)branched cyclic polyglycerols ((h)bcPGs) of two molecular weights (Mn = 8 and 60 kDa) were prepared through intramolecular cross-linking with the tetraboronic acid–functionalized porphyrin, 5,10,15,20-(tetra-4-dihydroxyborylphe...

Nanoparticles Against Antimicrobial Resistance: Chemical Design, Assembly, and Emerging Applications

Abstract Antimicrobial resistance (AMR) is an escalating global health concern, with increasing rates of morbidity and mortality associated with multidrug-resistant infections worldwide. Despite intensive efforts to discover antimicrobial compounds, few candidates progress to cli...

Radon-induced backgrounds in the NEXT-100 experiment

A bstract The NEXT-100 detector at the LSC aims at the first competitive search for the 0 νββ decay using a high-pressure 136 Xe electroluminescent time projection chamber. The first low-background run of NEXT-100 at 3.95 bar has been devoted to the measurement of the radon-induc...

J-PAS: Semisupervised Sim-to-Obs Transfer for Robust Star–Galaxy–Quasar Classification

Abstract Modern astrophysics and cosmology increasingly rely on simulations and cross-survey analyses, yet differences in instrumentation, calibration, and modeling introduce distribution mismatches between simulated and observed datasets (domain shift). This occurs when the join...

Moiré‐Induced Symmetry Breaking of Charge Order in van der Waals Heterostructures

ABSTRACT Layered materials that stack different lattice symmetries are rare in nature. Misfit layered chalcogenides, which combine square and hexagonal lattices of rocksalt monochalcogenides and transition‐metal dichalcogenides, provide a platform to explore how incommensurabilit...

A digital-twin testbench for centrifugal pump systems

This paper presents the Centrifugal Pump Digital Twin Testbench (CPDTT), an instrumented and fully automated experimental platform developed to study mechanical, electrical, and hydraulic failure modes in centrifugal pump systems under controlled conditions. The setup features an...

Cryogenic pure CsI as a probe for neutrino electromagnetic interactions

Abstract Searches for neutrino electromagnetic interactions at reactor sites require an unusual combination of ultra-low thresholds and a stable low-background environment. It is shown here that cryogenic undoped cesium iodide (CsI) naturally satisfies these conditions in a way p...

Atomically thin amorphous carbon with an ultralow dielectric constant

Two-dimensional (2D) materials could replace conventional electronic components. Key advances have already been made in applying 2D materials to integrated circuits, but a robust, atomically thin ultralow-k dielectric remains crucial for further circuit scaling. Minimizing parasi...

Yu-Shiba-Rusinov-assisted Andreev transport in a molecular junction between superconductors

Magnetic impurities in superconductors host Yu-Shiba-Rusinov (YSR) bound states, whereas weak superconducting junctions sustain subharmonic charge transport through multiple Andreev reflections (MAR). We explore these phenomena using a molecular-scale junction created by placing...

Driving Forcesof UCST and LCST Liquid–Liquid Phase Separations

Abstract A liquid mixture of two or more components can phase separate into two liquid phases by changing the temperature. Ordinary chemical perception would attribute this transition to a competition between the favorable enthalpy of the biphasic state and the favorable entropy...

Rate-Programmable Interfacial Resistive Switching with Tunable Volatility in CuCrP2S6

Metal thiophosphates are emerging as a multifunctional material platform for neuromorphic electronics due to their accessible polar phases and ion dynamics on biologically relevant timescales. While resistive switching in these materials is frequently attributed to ferroelectric...

Toward more accurate natural orbital functional approximations: Including 4-index cumulant contributions

Accurate modeling of bond breaking remains a central challenge for reduced density matrix functional theory (RDMFT). Although some modern functionals can yield reasonably accurate dissociation energies, they often fail to reproduce key properties of the dissociated fragments, suc...