% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Ginga:638641,
      author       = {Ginga, Victoria A. and Shen, Bin and Uykur, Ece and
                      Giordano, Nico and Gegenwart, Philipp and Tsirlin,
                      Alexander},
      title        = {{P}ressure-tuned spin chains in brochantite,
                      {C}u$_4${SO}$_4$({OH})$_6$},
      journal      = {Physical review materials},
      volume       = {9},
      number       = {9},
      issn         = {2475-9953},
      address      = {College Park, MD},
      publisher    = {APS},
      reportid     = {PUBDB-2025-04125},
      pages        = {094412},
      year         = {2025},
      abstract     = {Using high-pressure single-crystal x-ray diffraction
                      combined with thermodynamic measurements and
                      density-functional calculations, we uncover the microscopic
                      magnetic model of the mineral brochantite,
                      Cu$_4$⁢SO$_4$⁢(OH)$_6$, and its evolution upon
                      compression. The formation of antiferromagnetic spin chains
                      with the effective intrachain coupling of 𝐽≃100K is
                      attributed to the occurrence of longer Cu–Cu distances and
                      larger Cu–O–Cu bond angles between the structural chains
                      within the layers of the brochantite structure. These zigzag
                      spin chains are additionally stabilized by ferromagnetic
                      couplings 𝐽$_2$ between second neighbors and moderately
                      frustrated by several antiferromagnetic couplings that
                      manifest themselves in the reduced Néel temperature of the
                      material. Pressure tuning of the brochantite structure keeps
                      its monoclinic symmetry unchanged and leads to the growth of
                      antiferromagnetic 𝐽 with the rate of 3.2 K/GPa,
                      although this trend is primarily caused by the enhanced
                      ferromagnetic couplings 𝐽$_2$. Our results show that the
                      nature of magnetic couplings in brochantite and in other
                      layered Cu$^{2+}$ minerals is controlled by the size of the
                      lattice translation along their structural chains and by the
                      extent of the layer buckling.},
      cin          = {DOOR ; HAS-User / FS-PET-D},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-PET-D-20190712},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
                      DFG project G:(GEPRIS)492547816 - TRR 360: Eingeschränkte
                      Quantenmaterie (492547816) / FS-Proposal: I-20230876
                      (I-20230876)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
                      G:(GEPRIS)492547816 / G:(DE-H253)I-20230876},
      experiment   = {EXP:(DE-H253)P-P02.2-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1103/g459-sxb7},
      url          = {https://bib-pubdb1.desy.de/record/638641},
}