Anna Isaeva
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View article: The asymmetric Fermi surface of Bi2201
The asymmetric Fermi surface of Bi2201 Open
High-resolution angle-resolved photoemission spectroscopy (ARPES) performed on the single-layered cuprate (Pb _{1-y} ,Bi _y ) _2 Sr _{2-x} La _x CuO _{6+\delta} (Bi2201) reveals a 6-10% difference in the nodal k_…
View article: Fabrication of large-area 2D magnetic semiconductor films for low-temperature ARPES
Fabrication of large-area 2D magnetic semiconductor films for low-temperature ARPES Open
The exploration of two-dimensional (2D) magnetic semiconductors is often hindered by small lateral sample sizes and rapid degradation under ambient conditions. In angle-resolved photoemission spectroscopy (ARPES), sample charging at low te…
View article: Roadmap on quantum magnetic materials
Roadmap on quantum magnetic materials Open
Fundamental research on two-dimensional (2D) magnetic systems based on van der Waals materials has been rapidly gaining traction since their recent discovery. With the increase of recent knowledge, it has become clear that such materials h…
View article: Bulk and surface electron scattering in disordered <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Bi</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Te</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> probed by quasiparticle interference
Bulk and surface electron scattering in disordered probed by quasiparticle interference Open
We investigated the electronic properties of the topological insulator Bi2Te3 by scanning tunneling microscopy and spectroscopy at low temperature. We obtained high-resolution quasiparticle interference data of the topological surface Dira…
View article: Mn Interstitials in Layered Mn<sub>1+<i>x</i></sub>Sb<sub>2–2/3<i>x</i></sub>Te<sub>4</sub>: Structural Modification and Curie Temperature Boost
Mn Interstitials in Layered Mn<sub>1+<i>x</i></sub>Sb<sub>2–2/3<i>x</i></sub>Te<sub>4</sub>: Structural Modification and Curie Temperature Boost Open
View article: Fluctuations universelles de conductance géantes dans des nano-barres de Hall de l'isolant topologique anti-ferromagnétique MnBi2Te4
Fluctuations universelles de conductance géantes dans des nano-barres de Hall de l'isolant topologique anti-ferromagnétique MnBi2Te4 Open
Pré-publication
View article: Roadmap on Quantum Magnetic Materials
Roadmap on Quantum Magnetic Materials Open
Fundamental research on two-dimensional (2D) magnetic systems based on van der Waals materials has been gaining traction rapidly since their recent discovery. With the increase of recent knowledge, it has become clear that such materials h…
View article: Josephson coupling across magnetic topological insulator MnBi2Te4
Josephson coupling across magnetic topological insulator MnBi2Te4 Open
Topological superconductors hosting Majorana zero modes are of great interest for both fundamental physics and potential quantum computing applications. In this work, we investigate the transport properties of the intrinsic magnetic topolo…
View article: Pressure-tuning of α-RuCl3 towards a quantum spin liquid
Pressure-tuning of α-RuCl3 towards a quantum spin liquid Open
View article: Bulk and surface electron scattering in disordered Bi$_{2}$Te$_{3}$ probed by quasiparticle interference
Bulk and surface electron scattering in disordered Bi$_{2}$Te$_{3}$ probed by quasiparticle interference Open
We investigated the electronic properties of the topological insulator Bi$_{2}$Te$_{3}$ by scanning tunneling microscopy and spectroscopy at low temperature. We obtained high-resolution quasiparticle interference data of the topological su…
View article: Ubiquitous Order‐Disorder Transition in the Mn Antisite Sublattice of the (MnBi<sub>2</sub>Te<sub>4</sub>)(Bi<sub>2</sub>Te<sub>3</sub>)<sub><i>n</i></sub> Magnetic Topological Insulators
Ubiquitous Order‐Disorder Transition in the Mn Antisite Sublattice of the (MnBi<sub>2</sub>Te<sub>4</sub>)(Bi<sub>2</sub>Te<sub>3</sub>)<sub><i>n</i></sub> Magnetic Topological Insulators Open
Magnetic topological insulators (TIs) herald a wealth of applications in spin‐based technologies, relying on the novel quantum phenomena provided by their topological properties. Particularly promising is the (MnBi 2 Te 4 )(Bi 2 Te 3 ) n l…
View article: Ubiquitous order-disorder transition in the Mn antisite sublattice of the (MnBi$_2$Te$_4$)(Bi$_2$Te$_3$)$_n$ magnetic topological insulators
Ubiquitous order-disorder transition in the Mn antisite sublattice of the (MnBi$_2$Te$_4$)(Bi$_2$Te$_3$)$_n$ magnetic topological insulators Open
Magnetic topological insulators (TIs) herald a wealth of applications in spin-based technologies, relying on the novel quantum phenomena provided by their topological properties. Particularly promising is the (MnBi$_2$Te$_4$)(Bi$_2$Te$_3$)…
View article: CSD 1777889: Experimental Crystal Structure Determination
CSD 1777889: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Anomalous Nernst effect in the topological and magnetic material MnBi4Te7
Anomalous Nernst effect in the topological and magnetic material MnBi4Te7 Open
The recently discovered magnetic topological insulators (MnBi 2 Te 4 )(Bi 2 Te 3 ) n , n = 0–4, are an ideal playground to study the influence of magnetic properties on band topology, giving access to diverse quantum states in a single com…
View article: Hall effect in the MnBi2Te4 crystal using silicon nitride nanomembrane via contacts
Hall effect in the MnBi2Te4 crystal using silicon nitride nanomembrane via contacts Open
Utilizing an interplay between band topology and intrinsic magnetism, the two-dimensional van der Waals (vdW) system MnBi2Te4 provides an ideal platform for realizing exotic quantum phenomena and offers great opportunities in the emerging …
View article: Hall-effect in the MnBi_2Te_4 crystal using silicon nitride nanomembrane via contacts
Hall-effect in the MnBi_2Te_4 crystal using silicon nitride nanomembrane via contacts Open
Utilizing an interplay between band topology and intrinsic magnetism, the two-dimensional van der Waals (vdW) system MnBi_2Te_4 provides an ideal platform for realizing exotic quantum phenomena and offers great opportunities in the emergin…
View article: CSD 2274900: Experimental Crystal Structure Determination
CSD 2274900: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Cover Feature: Microstructural evolution of layered K‐doped RuCl<sub>3</sub> during annealing traced by thermogravimetric analysis and 3D electron diffraction (Z. Anorg. Allg. Chem. 19/2023)
Cover Feature: Microstructural evolution of layered K‐doped RuCl<sub>3</sub> during annealing traced by thermogravimetric analysis and 3D electron diffraction (Z. Anorg. Allg. Chem. 19/2023) Open
The cover picture shows an artistic representation of a nanoscale phase separation which can be naturally induced by rapid, out-of-equilibrium heating of K-doped RuCl3. Combining the pXRD, TGA-MS, HRTEM and 3D electron diffraction we step-…
View article: Stacking-Order-Dependent Excitonic Properties Reveal Interlayer Interactions in Bulk ReS<sub>2</sub>
Stacking-Order-Dependent Excitonic Properties Reveal Interlayer Interactions in Bulk ReS<sub>2</sub> Open
Rhenium disulfide, a member of the transition metal dichalcogenide family of semiconducting materials, is unique among 2D van der Waals materials due to its anisotropy and, albeit weak, interlayer interactions, confining excitons within si…
View article: Weyl cones revealed by the anomalous Nernst effect in MnBi4Te7
Weyl cones revealed by the anomalous Nernst effect in MnBi4Te7 Open
The recently discovered magnetic topological insulators (MnBi2Te4)(Bi2Te3)n, n = 0-4, are an ideal playground to study the influence of magnetic properties on band topology, giving access to diverse quantum states in a single compound. In …
View article: Two-dimensional ferromagnetic extension of a topological insulator
Two-dimensional ferromagnetic extension of a topological insulator Open
Inducing a magnetic gap at the Dirac point of the topological surface state (TSS) in a three-dimensional (3D) topological insulator (TI) is a route to dissipationless charge and spin currents. Ideally, magnetic order is present only at the…
View article: Impact of Mn-Pn intermixing on magnetic properties of an intrinsic magnetic topological insulator: the µSR perspective
Impact of Mn-Pn intermixing on magnetic properties of an intrinsic magnetic topological insulator: the µSR perspective Open
We investigated the magnetic properties of polycrystalline samples of the intrinsic magnetic topological insulators MnPn 2 Te 4 , with pnictogen Pn = Sb, Bi, by bulk magnetization and µ SR. DC susceptibility detects the onset of magnetic o…
View article: Intermixing‐Driven Surface and Bulk Ferromagnetism in the Quantum Anomalous Hall Candidate MnBi<sub>6</sub>Te<sub>10</sub>
Intermixing‐Driven Surface and Bulk Ferromagnetism in the Quantum Anomalous Hall Candidate MnBi<sub>6</sub>Te<sub>10</sub> Open
The recent realizations of the quantum anomalous Hall effect (QAHE) in MnBi 2 Te 4 and MnBi 4 Te 7 benchmark the (MnBi 2 Te 4 )(Bi 2 Te 3 ) n family as a promising hotbed for further QAHE improvements. The family owes its potential to its …
View article: Intermixing-driven surface and bulk ferromagnetism in the quantum anomalous Hall candidate MnBi$_6$Te$_{10}$
Intermixing-driven surface and bulk ferromagnetism in the quantum anomalous Hall candidate MnBi$_6$Te$_{10}$ Open
The recent realizations of the quantum anomalous Hall effect (QAHE) in MnBi$_2$Te$_4$ and MnBi$_4$Te$_7$ benchmark the (MnBi$_2$Te$_4$)(Bi$_2$Te$_3$)$_n$ family as a promising hotbed for further QAHE improvements. The family owes its poten…
View article: Dilution of the magnetic lattice in the Kitaev candidate <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>α</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mi>RuCl</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> by <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow><mml:mi>Rh</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math> doping
Dilution of the magnetic lattice in the Kitaev candidate by doping Open
Magnetic dilution of a well-established Kitaev candidate system is realized in the substitutional Ru1-xRhxCl3 series (x=0.02-0.6). Optimized syntheses protocols yield uniformly doped single crystals and polycrystalline powders that are iso…
View article: Charge transfer at the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>α</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mi>RuCl</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>/MnPc interface
Charge transfer at the /MnPc interface Open
The interface of manganese(II) phtalocyanine (MnPc) with an α-RuCl3 single crystal is studied by means of photoelectron spectroscopy. The organic molecule was evaporated on top of an in situ cleaved α-RuCl3 bulk crystal in steps. The work …
View article: <sup>125</sup>Te NMR study of the bulk of topological insulators Bi<sub>2</sub>Te<sub>3</sub> and Sb<sub>2</sub>Te<sub>3</sub>
<sup>125</sup>Te NMR study of the bulk of topological insulators Bi<sub>2</sub>Te<sub>3</sub> and Sb<sub>2</sub>Te<sub>3</sub> Open
The narrow band gap semiconductors Bi 2 Te 3 and Sb 2 Te 3 are well known for their room temperature thermoelectric performance. Recently, they were shown to serve as model systems of three‐dimensional topological insulators with a bulk ba…
View article: Nontrivial gapless electronic states at the stacking faults of weak topological insulators
Nontrivial gapless electronic states at the stacking faults of weak topological insulators Open
Lattice defects such as stacking faults may obscure electronic topological features of real materials. In fact, defects are a source of disorder that can enhance the density of states and conductivity of the bulk of the system and they bre…
View article: Pressure-tuning of $α$-RuCl$_3$ towards the ideal Kitaev-limit
Pressure-tuning of $α$-RuCl$_3$ towards the ideal Kitaev-limit Open
We report the discovery of an intriguing pressure-driven phase transformation in the layered Kitaev-material $α$-RuCl$_3$. By analyzing both the Bragg scattering as well as the diffuse scattering of high-quality single crystals, we reveal …
View article: Work Function Engineering of Thin α‐RuCl<sub>3</sub> by Argon Sputtering
Work Function Engineering of Thin α‐RuCl<sub>3</sub> by Argon Sputtering Open
α‐RuCl 3 is a candidate material for the realization of a Kitaev spin liquid with envisioned applications for quantum computing. It is a van‐der‐Waals material with in‐plane honeycomb lattice equivalent to the Cr X 3 ( X = Cl, Br, I) type …