Št. zadetkov: 10
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;condensed matter physics;
Photodoped states in strongly correlated charge-transfer insulators are characterized by d-d and d-p interactions and the resulting intertwined dynamics of charge excitations and local multiplets. Here, we use femtosecond x-ray absorption spectroscopy in combination with dynamical mean-field theory ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Magistrsko delo
Oznake:
fizika kondenzirane snovi;ekscitonski izolatorji;termoelektrični transport;Boltzmannova teorija;Kubova teorija linearnega odziva;Seebeckov koeficient;
Ekscitonski izolatorji so polkovine, v katerih pri nizkih temperaturah pod vplivom Coulombske interakcije nastane kondenzat ekscitonov, vezanih stanj elektronov in vrzeli. Posledično se v disperziji odpre energijska reža in pojavijo se posebne transportne lastnosti. To stanje snovi je bilo teoretičn ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;polprevodniki;2D materiali;condensed matter physics;semiconductors;2D materials;excitonic fluctuations;structural instabilities;electron correlations;DFT calculations;mean-field theory;
We investigate the energetics of the quasi-one-dimensional layered compound Ta$_2$NiSe$_5$ in the excitonic phase within the six-band model using Hartree–Fock calculations. We calculate energies of states with different kinds of excitonic order and show that they differ by less than meV and depend s ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;bipolaroni;elektron-fononska sklopitev;condensed matter physics;bipolarons;electron-phonon coupling;
We investigate full quantum mechanical evolution of two electrons nonlinearly coupled to quantum phonons and simulate the dynamical response of the system subject to a short spatially uniform optical pulse that couples to dipole-active vibrational modes. Nonlinear electron-phonon coupling can either ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Pregledni znanstveni članek
Oznake:
fizika kondenzirane snovi;Mottovi izolatorji;močno korelirani sistemi;neravnovesni sistemi;interakcije svetloba-snov;fotoinducirani prehodi;condensed matter physics;Mott insulators;strongly correlated systems;nonequilibrium systems;light-matter interaction;photoinduced transitions;
The study of nonequilibrium phenomena in interacting lattice systems can provide new perspectives on correlation effects and information on metastable states of matter. Mott insulators are a promising class of systems for nonequilibrium studies since they exhibit exotic phenomena and complex phase d ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;neravnovesni sistemi;Hubbardov model;rentgenska absorpcijska spektroskopija;consensed matter physics;nonequilibrium systems;Hubbard model;X-ray absorption spectroscopy;
Recent seminal experiments have utilized time-resolved x-ray absorption spectroscopy (XAS) to investigate the ultrafast photoinduced renormalization of the electron interaction (“Hubbard U”) in Mott and charge transfer insulators. In this paper, we theoretically analyze the change of interactions du ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;superprevodnost;interakcije svetloba-snov;condensed matter physics;superconductivity;light-matter interactions;
Using a state-of-the-art numerical scheme, we show that the Higgs mode under excitation exhibits chirped oscillations and exponential decay when fluctuations are included. This is in stark contrast to conventional BCS collisionless dynamics which predict power-law decay and the absence of chirping. ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;kvantna fizika;večdelčni sistemi;Hubbardov model;Andersonov model;condensed matter physics;quantum physics;many-body systems;Hubbard model;Anderson model;
We present an efficient separation of variables algorithm for the evaluation of imaginary time Feynman diagrams appearing in the bold pseudo-particle strong coupling expansion of the Anderson impurity model. The algorithm uses a fitting method based on AAA rational approximation and numerical optimi ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;condensed matter physics;
Exciton-spin interactions in antiferromagnetic charge-transfer insulators
Leto:
2023
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Nikola Bešić,
Simona Borštnar,
Vesna Homar,
Denis Mlakar-Mastnak,
Zlatka Mavrič,
Anamarija Mozetič,
Jana Knific,
Nataša Kos,
Nina Slabe,
Nada Rotovnik-Kozjek,
Nena Kopčavar Guček,
Mateja Kurir-Borovčić,
Tanja Marinko,
Ana Pekle-Golež,
Irena Rahne Otorepec,
Gabrijela Simetinger,
Andreja Cirila Škufca Smrdel,
Branka Stražišar,
Tanja Španić,
Lorna Zadravec-Zaletel
Končno poročilo o rezultatih raziskav
Oznake:
rak dojke;bolniki;celostna rehabilitacija;klinične poti;
Klinična pot celostne rehabilitacije bolnikov z rakom dojke
Leto:
2021
Vir:
Onkološki inštitut Ljubljana (OI)