Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Rhea Kappenberger"'
Autor:
Christoph Wuttke, Federico Caglieris, Steffen Sykora, Frank Steckel, Xiaochen Hong, Sheng Ran, Seunghyun Khim, Rhea Kappenberger, Sergey L. Bud’ko, Paul C. Canfield, Sabine Wurmehl, Saicharan Aswartham, Bernd Büchner, Christian Hess
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-10 (2022)
Abstract The role of nematic fluctuations for unconventional superconductivity has been the subject of intense discussions for many years. In iron-based superconductors, the most established probe for electronic-nematic fluctuations, i.e. the elastor
Externí odkaz:
https://doaj.org/article/15a00fd2e54d4344ae174c7469408b90
Autor:
Sung Won Jung, Luke C Rhodes, Matthew D Watson, Daniil V Evtushinsky, Cephise Cacho, Saicharan Aswartham, Rhea Kappenberger, Sabine Wurmehl, Bernd Büchner, Timur K Kim
Publikováno v:
New Journal of Physics, Vol 24, Iss 11, p 113018 (2022)
The electronic structures of the iron-based superconductors have been intensively studied by using angle-resolved photoemission spectroscopy (ARPES). A considerable amount of research has been focused on the LaFeAsO family, showing the highest transi
Externí odkaz:
https://doaj.org/article/9fa5044e489946e09310f47f5912d346
Autor:
Vitaliy Romaka, Marco Naumann, Martin Knupfer, Francesco Scaravaggi, Saicharan Aswartham, Bernd Büchner, Rhea Kappenberger, Anja U. B. Wolter, Sabine Wurmehl, S. Selter
Publikováno v:
Inorganic Chemistry. 59:16913-16923
We present a systematic study of the evolution of structural parameters and electronic correlations as a function of 3d band filling in a single crystal series of BaT2As2 (T = Cr-Cu). The structure trends are discussed in relation to the orbital occu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a271dbdda973413b7e2489c507f4dd92
https://doi.org/10.1021/acs.inorgchem.0c01817
https://doi.org/10.1021/acs.inorgchem.0c01817
Autor:
Liran Wang, Rüdiger Klingeler, Sabine Wurmehl, Francesco Scaravaggi, Rhea Kappenberger, Anja U. B. Wolter, Bernd Büchner, S. Sauerland, Saicharan Aswartham
Publikováno v:
Journal of Magnetism and Magnetic Materials. 482:50-53
We present thermal expansion studies on single-crystalline LaFe 1 - x Co x AsO with doping levels of x = 0, 0.026, and 0.034, and on BaFe 2 As 2 . Anomalies in the thermal expansion coefficient α enable reading off the structural and magnetic transi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ba67eb1110b6dced21d37ef1a7e2d57
https://doi.org/10.1016/j.jmmm.2019.02.061
https://doi.org/10.1016/j.jmmm.2019.02.061
Autor:
Liran Wang, Christoph Wuttke, Saicharan Aswartham, Christian Hess, Federico Caglieris, Ruediger Klingeler, Rhea Kappenberger, Sabine Wurmehl, Hans-Joachim Grafe, Xiaochen Hong, Francesco Scaravaggi, Piotr Lepucki, A. P. Dioguardi, Anja U. B. Wolter, S. Sauerland, Bernd Büchner
Publikováno v:
Physical Review B. 103
In this work we revisit the phase diagram of Co-doped LaFeAsO using single crystals and thermodynamic methods. From magnetic susceptibility studies, we track the doping evolution of the antiferromagnetic phase to reveal a continuous suppression of ${
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee698bc483cc6f3ea3e6631a6d286b52
https://doi.org/10.1103/physrevb.103.174506
https://doi.org/10.1103/physrevb.103.174506
Autor:
Sabine Wurmehl, Adam Dioguardi, Hans-Joachim Grafe, Francesco Scaravaggi, Saicharan Aswartham, Piotr Lepucki, Raphael Havemann, Anja U. B. Wolter, Bernd Büchner, Rhea Kappenberger
We determine the phase diagram of ${\mathrm{LaFe}}_{1\ensuremath{-}x}{\mathrm{Co}}_{x}\mathrm{AsO}$ single crystals by using nuclear magnetic resonance (NMR). Up to a nominal doping of $x=0.03$, it follows the phase diagram for F-doped polycrystals.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::296a02742481f2a33924bc921f03145e
http://arxiv.org/abs/2011.13641
http://arxiv.org/abs/2011.13641
Autor:
Sebastian, Selter, Francesco, Scaravaggi, Rhea, Kappenberger, Marco, Naumann, Vitaliy V, Romaka, Martin, Knupfer, Saicharan, Aswartham, Anja U B, Wolter, Sabine, Wurmehl, Bernd, Büchner
Publikováno v:
Inorganic chemistry. 59(23)
We present a systematic study of the evolution of structural parameters and electronic correlations as a function of 3d band filling in a single crystal series of BaT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6a1ebc5c2b12d31f174423554d5ce1a2
https://pubmed.ncbi.nlm.nih.gov/33205960
https://pubmed.ncbi.nlm.nih.gov/33205960
Autor:
Hans-Joachim Grafe, Piotr Lepucki, Saicharan Aswartham, Rhea Kappenberger, Bernd Büchner, Markus Witschel, Adam Dioguardi, Sabine Wurmehl
We present $^{75}\mathrm{As}$ nuclear magnetic and quadrupole resonance results (NMR, NQR) on a new set of $\mathrm{La}\mathrm{Fe}\mathrm{As}{\mathrm{O}}_{1\ensuremath{-}x}{\mathrm{F}}_{x}$ polycrystalline samples. Improved synthesis conditions led t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54216d95480d3253843814851e36955e
http://arxiv.org/abs/2003.00733
http://arxiv.org/abs/2003.00733
Autor:
Anja U. B. Wolter, Bernd Büchner, Francesco Scaravaggi, Rhea Kappenberger, Christian G. F. Blum, Sabine Wurmehl, Mihai Sturza, Saicharan Aswartham
Publikováno v:
Journal of Crystal Growth. 483:9-15
Solid state single crystal growth (SSCG) is a crystal growth technique where crystals are grown from a polycrystalline matrix. Here, we present single crystals of the iron pnictide LaFeAsO grown via SSCG using NaAs as a liquid phase to aid crystalliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::709bd62706e175b97503fdcdef103a93
https://doi.org/10.1016/j.jcrysgro.2017.11.006
https://doi.org/10.1016/j.jcrysgro.2017.11.006
Autor:
Xiaochen, Hong, Federico, Caglieris, Rhea, Kappenberger, Sabine, Wurmehl, Saicharan, Aswartham, Francesco, Scaravaggi, Piotr, Lepucki, Anja U B, Wolter, Hans-Joachim, Grafe, Bernd, Büchner, Christian, Hess
Publikováno v:
Physical review letters. 125(6)
We report a systematic elastoresistivity study on LaFe_{1-x}Co_{x}AsO single crystals, which have well separated structural and magnetic transition lines. All crystals show a Curie-Weiss-like nematic susceptibility in the tetragonal phase. The extrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::4c8e3fe699471b4a94f92cc6d718e431
https://pubmed.ncbi.nlm.nih.gov/32845654
https://pubmed.ncbi.nlm.nih.gov/32845654