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@article{WOS:001850994300002,
title = {Manipulation of localized excitons in CrPS4 by temperature
and magnetic field},
author = {Dipankar Jana and Swagata Acharya and Amit Pawbake and Dmitrii Litvinov and Aljoscha Soll and Zdenek Sofer and Clement Faugeras and Dimitar Pashov and Mark van Schilfgaarde and Kostya S Novoselov and Marek Potemski and Maciej Koperski},
doi = {10.1073/pnas.2616584123},
times_cited = {0},
issn = {0027-8424},
year = {2026},
date = {2026-08-01},
journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA},
volume = {123},
number = {34},
publisher = {NATL ACAD SCIENCES},
address = {2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA},
abstract = {Layered van der Waals magnetic semiconductors provide a versatile
platform for exploring excitonic phenomena intertwined with spin and
lattice degrees of freedom, enabling excitons to act as sensitive probes
of magnetic order. CrPS(4 )is a layered antiferromagnetic semiconductor
that hosts rich excitonic features whose microscopic origin and
connection to magnetic ordering remain incompletely understood. Here, we
investigate the electronic and excitonic properties of bulk CrPS(4
)using a combination of many-body perturbation theory, dynamical
mean-field theory, and photoluminescence-based experiments. Our
calculations establish CrPS(4 )as a direct-gap semiconductor with a
bandgap of 2.48 eV in the antiferromagnetic phase. Several subbandgap
excitonic transitions are predicted by theory, comprising multiple
spin-allowed excitons and an additional spin-flip excitation,
predominantly localized on the Cr(3+)ions. Temperature-and
magnetic-field-dependent optical measurements reveal thermally driven
exciton redistribution among localized states and identify
characteristic energy shifts that provide clear optical signatures of
magnetic phase transitions in CrPS4. These results provide insights into
the excitonic transitions of antiferromagnets and suggest potential
routes for all-optical sensing and light-driven control of their
magnetic order.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001792718100001,
title = {Spin-Flip Optical Excitations in van der Waals Antiferromagnet
CrPS4},
author = {Dipankar Jana and Aljoscha Soll and Zdenek Sofer and Milan Orlita and Clement Faugeras and Maciej Koperski and Marek Potemski},
doi = {10.1021/acs.nanolett.6c01101},
times_cited = {2},
issn = {1530-6984},
year = {2026},
date = {2026-07-01},
journal = {NANO LETTERS},
volume = {26},
number = {25},
pages = {8124-8131},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {We investigate the near-infrared optical response of the semiconducting
van der Waals antiferromagnet CrPS4 and identify previously unreported
spin-entangled optical resonances. The strong and anisotropic
magnetic-field dependence of these resonances reflects the underlying
magnetic order and confirms the biaxial antiferromagnetic nature of
CrPS4. From the magnetic field evolution of the optical transition, we
extract key magnetic parameters, including the spin-flop ( approximate
to 0.9 T) and spin-saturation ( approximate to 8 T) fields. These
results demonstrate a potential pathway for all-optical probing of spin
states in van der Waals antiferromagnets, with relevance for
spin-sensitive optoelectronic and magneto-optical devices.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001619984500001,
title = {Two-Dimensional Materials as a Multiproperty Sensing Platform},
author = {Dipankar Jana and Shubhrasish Mukherjee and Dmitrii Litvinov and Magdalena Grzeszczyk and Sergey Grebenchuk and Makars Siskins and Virgil Gavriliuc and Yihang Ouyang and Changyi Chen and Yuxuan Ye and Meng Yiming and Maciej Koperski},
doi = {10.1002/adfm.202516728},
times_cited = {13},
issn = {1616-301X},
year = {2026},
date = {2026-02-01},
journal = {ADVANCED FUNCTIONAL MATERIALS},
volume = {36},
number = {14},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {Two-dimensional (2D) materials have disrupted materials science due to
the development of van der Waals technology. It enables the stacking of
ultrathin layers of materials characterized by vastly different
electronic structures to create man-made heterostructures and devices
with rationally tailored properties, circumventing limitations of
matching crystal structures, lattice constants, and geometry of
constituent materials and supporting substrates. 2D materials exhibit
extraordinary mechanical flexibility, strong light-matter interactions
driven by their excitonic response, single photon emission from atomic
centers, stable ferromagnetism in sub-nm thin films, fractional quantum
Hall effect in high-quality devices, and chemoselectivity at ultrahigh
surface-to-volume ratio. Consequently, van der Waals heterostructures
with atomically flat interfaces demonstrate an unprecedented degree of
intertwined mechanical, chemical, optoelectronic, and magnetic
properties. This constitutes a foundation for multiproperty sensing,
based on complex intra- and intermaterial interactions, and a robust
response to external stimuli originating from the environment. Here,
recent progress are reviewed in the development of sensing applications
with 2D materials, highlighting the areas where van der Waals
heterostructures offer the highest sensitivity, simultaneous responses
to multiple distinct externalities due to their atomic thickness in
conjunction with unique material combinations, and conceptually new
sensing methodology.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001699128100002,
title = {Extremely High Excitonic g Factors in 2D Crystals by Alloy-Induced
Admixing of Band States},
author = {Katarzyna Olkowska-Pucko and Tomasz Wozniak and Elena Blundo and Natalia Zawadzka and Lucja Kipczak and Paulo E Faria Junior and Jan Szpakowski and Grzegorz Krasucki and Salvatore Cianci and Diana Vaclavkova and Dipankar Jana and Piotr Kapuscinski and Amit Pawbake and Shalini Badola and Magdalena Grzeszczyk and Daniele Cecchetti and Giorgio Pettinari and Igor Antoniazzi and Zdenek Sofer and Iva Plutnarova and Kenji Watanabe and Takashi Taniguchi and Clement Faugeras and Marek Potemski and Adam Babinski and Antonio Polimeni and Maciej R Molas},
doi = {10.1103/lx4n-7bb7},
times_cited = {2},
issn = {0031-9007},
year = {2026},
date = {2026-02-01},
journal = {PHYSICAL REVIEW LETTERS},
volume = {136},
number = {7},
publisher = {AMER PHYSICAL SOC},
address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
abstract = {Monolayers (MLs) of semiconducting transition metal dichalcogenides emit
light very efficiently and display rich spin-valley physics, with
gyromagnetic (g) factors of about-4. Here, we investigate how these
properties can be tailored by alloying. Magneto-optical spectroscopy is
used to reveal the peculiar properties of excitonic complexes in
MoxW1-xSe2 MLs with different metal concentrations. We show that the
alloys feature extremely high g factors for neutral excitons, that
change gradually with the composition up to reaching values of the order
of-10 for x approximate to 0.2. First-principles calculations
quantitatively identify the alloy-induced mixing between different
conduction band valleys as the underlying mechanism originating the
anomalous composition dependence of the neutral exciton g factor. The
theoretical framework also suggests a high strain sensitivity of the
alloys, making them promising candidates for tailor-made optoelectronic
devices.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{WOS:001610214800001,
title = {Deconstruction of the Anisotropic Magnetic Interactions from
Spin-Entangled Optical Excitations in van der Waals Antiferromagnets},
author = {Dipankar Jana and Swagata Acharya and Milan Orlita and Clement Faugeras and Dimitar Pashov and Mark Van Schilfgaarde and Marek Potemski and Maciej Koperski},
doi = {10.1002/advs.202505834},
times_cited = {7},
year = {2026},
date = {2026-01-01},
journal = {ADVANCED SCIENCE},
volume = {13},
number = {2},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {Magneto-optical excitations in antiferromagnetic d systems can originate
from a multiplicity of light-spin and spin-spin interactions, as the
light and spin degrees of freedom can be entangled. This is exemplified
in van der Waals systems with attendant strong anisotropy between
in-plane and out-of-plane directions, such as and films studied here.
The rich interplay between the magnetic ordering and sub-bandgap optical
transitions poses a challenge to resolve the mechanisms driving
spin-entangled optical transitions, as well as the single-particle
bandgap itself. Here, a high-fidelity ab initio theory is applied to
find a realistic estimation of the bandgap by elucidating the atom- and
orbital-resolved contributions to the fundamental sub-bands. It is
further demonstrated that the spin-entangled excitations, observable as
photoluminescence and absorption resonances, originate from an on-site
spin-flip transition confined to a magnetic atom (Mn or Ni). The
evolution of the spin-flip transition in a magnetic field is used to
deduce the effective exchange coupling and anisotropy constants.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}