Zobrazeno 1 - 10 of 72 pro vyhledávání: '"G. L. Pascut"'
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Akademický článek
Noncollinear magnetic order, in-plane anisotropy, and magnetoelectric coupling in the pyroelectric honeycomb antiferromagnet Ni_{2}Mo_{3}O_{8}
Autor: Poonam Yadav, Suheon Lee, G. L. Pascut, Jaewook Kim, Matthias J. Gutmann, Xianghan Xu, Bin Gao, Sang-Wook Cheong, Valery Kiryukhin, Sungkyun Choi
Publikováno v: Physical Review Research, Vol 5, Iss 3, p 033099 (2023)
Ni_{2}Mo_{3}O_{8} is a pyroelectric honeycomb antiferromagnet exhibiting peculiar changes in its electric polarization at magnetic transitions. Ni_{2}Mo_{3}O_{8} stands out from isostructural magnetic compounds, showing an anomalously low magnetic tr
Externí odkaz: https://doaj.org/article/1e5fd625dedf4c02ab2568891752bee4
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3
Spectroscopic and first principle DFT+eDMFT study of complex structural, electronic, and vibrational properties of M2Mo3O8 ( M=Fe , Mn) polar magnets
Autor: Sungkyun Choi, Matthias J. Gutmann, Alexander P. Litvinchuk, Andrei Sirenko, Bin Gao, S. W. Cheong, G. L. Pascut, T. N. Stanislavchuk, Kristjan Haule, Zhenxian Liu, Valery Kiryukhin
Publikováno v: Physical Review B. 102
Optical spectroscopy, x-ray diffraction measurements, density functional theory (DFT), density functional theory + embedded dynamical mean-field theory ($\mathrm{DFT}+eDMFT$), and crystal-field calculations have been used to characterize structural a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00a8a93c459c5e2fbe60ff0462b50a5d
https://doi.org/10.1103/physrevb.102.115139
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4
Vacancy defect control of colossal thermopower in FeSb2
Autor: Gabriel Kotliar, Lijun Wu, Christie Nelson, Cedomir Petrovic, Yimei Zhu, Tiglet Besara, Chang-Jong Kang, Qianheng Du, Kristjan Haule, Igor Zaliznyak, G. L. Pascut, Huibo Cao, Theo Siegrist
Publikováno v: npj Quantum Materials, Vol 6, Iss 1, Pp 1-7 (2021)
Iron diantimonide is a material with the highest known thermoelectric power. By combining scanning transmission electron microscopic study with electronic transport neutron, X-ray scattering, and first principle calculation, we identify atomic defect
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3570175662e32f93692449b59f8d43fa
http://arxiv.org/abs/2008.08614
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5
First-principles study of the electronic structure and the Fermi surface in rare-earth filled skutterudites RPt4Ge12
Autor: Khandker Quader, G. L. Pascut, Michael Widom, Kristjan Haule
Publikováno v: Physical Review B. 100
Experiments on rare-earth filled skutterudites demonstrate an intriguing array of thermodynamic, transport, and superconducting properties, and bring to fore theoretical challenges posed by $f$-electron systems. First-principle calculations based den
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86b52422ecfd34016cbe41f245a6b400
https://doi.org/10.1103/physrevb.100.125114
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6
Mott Transition and Magnetism in Rare Earth Nickelates and its Fingerprint on the X-ray Scattering
Autor: Kristjan Haule, G. L. Pascut
Publikováno v: Scientific Reports
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
The metal-insulator transition (MIT) remains among the most thoroughly studied phenomena in solid state physics, but the complexity of the phenomena, which usually involves cooperation of many degrees of freedom including orbitals, fluctuating local
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5509e3617eac60113c637f00d022b62e
https://doi.org/10.1038/s41598-017-10374-2
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7
Forces for structural optimizations in correlated materials within a DFT+embedded DMFT functional approach
Autor: Kristjan Haule, G. L. Pascut
Publikováno v: Physical Review B. 94
We implemented the derivative of the free energy functional with respect to the atom displacements, so called force, within the combination of Density Functional Theory and the Embedded Dynamical Mean Field Theory. We show that in combination with th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ace21341e6b8c2d1f83af9587eb70fdb
https://doi.org/10.1103/physrevb.94.195146
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8
Fermi surface of IrTe2 in the valence-bond state as determined by quantum oscillations
Autor: Yuji Matsuda, Amalia I. Coldea, Dai Watanabe, Arjun Narayanan, Matthew Watson, Takuya Yamashita, Valery Kiryukhin, R. D. Johnson, G. L. Pascut, S. F. Blake, Shigeru Kasahara, Kristjan Haule, Alix McCollam, Takasada Shibauchi
Publikováno v: Physical Review. B, Condensed Matter and Materials Physics, 91, 12, pp. 5
Physical Review. B, Condensed Matter and Materials Physics, 91, 5
We report the observation of the de Haas-van Alphen effect in IrTe2 measured using torque magnetometry at low temperatures down to 0.4 K and in high magnetic fields up to 33T. IrTe2 undergoes a major structural transition around 283 K due to the form
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::176df356627a639094ff9824ad2ad709
https://ora.ox.ac.uk/objects/uuid:579d92fa-7a19-475f-b3a6-2bbf10f9ccf9
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9
Visualizing anisotropic propagation of stripe domain walls in staircaselike transitions ofIrTe2
Autor: Matthias Bode, Pin-Jui Hsu, Tobias Mauerer, Matthias Vogt, Valery Kiryukhin, Junjie Yang, Kristjan Haule, G. L. Pascut, Weida Wu, Sang-Wook Cheong
Publikováno v: Physical Review B. 94
We present a scanning tunneling microscopy (STM) study of the domain evolution across two first-order phase transitions of stripe modulations in ${\mathrm{IrTe}}_{2}$ that occur at ${T}_{\mathrm{C}}\ensuremath{\approx}275$ K and ${T}_{\mathrm{S}}\ens
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2774a16183c8359cb07ef6b30313adb
https://doi.org/10.1103/physrevb.94.014106
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10
Unveiling hidden ferrimagnetism and giant magnetoelectricity in polar magnet Fe2Mo3O8
Autor: Yazhong Wang, Valery Kiryukhin, Kristjan Haule, G. L. Pascut, Sang-Wook Cheong, Bin Gao, Trevor A. Tyson
Publikováno v: Scientific Reports
Magnetoelectric (ME) effect is recognized for its utility for low-power electronic devices. Largest ME coefficients are often associated with phase transitions in which ferroelectricity is induced by magnetic order. Unfortunately, in these systems, l
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3b454b67178a5d323bae21001758648
https://pubmed.ncbi.nlm.nih.gov/26194108
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