@article{fc57cb92ff044117b9b36e6c03819953,
title = "Effects of hole-doping and disorder on the magnetic states of delafossite CuCrO2 having a spin-3/2 antiferromagnetic triangular sublattice",
abstract = "In this review, we will discuss the effects of itinerant hole and disorder produced by substitutions on the magnetic states of polycrystalline delafossite oxide CuCrO2 having a spin-3/2 antiferromagnetic triangular sublattice. First, we will show the effects of hole-doping by the substitution of nonmagnetic Mg2+ for magnetic Cr3+ on the physical properties of CuCrO2, and will discuss the origin of nontrivial promotion of the 120° N{\'e}el state due to the coupling between the itinerant hole and localized spin. Next, we will show the effects of disorder introduced by the isovalent substitutions such as the nonmagnetic Ag+ substitution for nonmagnetic Cu+ and the nonmagnetic Al3+ one for magnetic Cr3+, and will discuss the possibility of appearance of unusual magnetic states such as spin liquid or spin nematic states.",
keywords = "Antiferromagnetic triangular lattice, delafossite, geometrical frustration, hole-doping, order by disorder, spin liquid, spin nematic",
author = "Tetsuji Okuda and Ryoichi Kajimoto and Mario Okawa and Tomohiko Saitoh",
note = "Funding Information: One of the authors (T. O.) thank S. Hidaka, N. Jufuku, T. Onoe, Y. Beppu, Y. Fujii, K. Uto, T. Hokazono, S. Oozono, T. Shinmura, S. Miyasaka, M. Mat-suda, N. Takeshita, M. Tokunaga, T. Kihara, Y. Onose, S. Seki, and Y. Tokura for collaborations and valuable discussions. The authors thank J. Sugiyama for providing with a figure of results of ZF-µ+SR measurements. The neutron scattering study was performed in collaboration with M. Matsuda, K. Nakajima, S. Ohira-Kawamura, Y. Inamura, K. Kakurai and M. Arai. The electronic structure study using PES, XAS, and band calculations was performed in collaboration with T. Yokobori, K. Konishi, R. Takei, K. Katayama, H. Wadati, E. Sakai, K. Ono, H. Kumigashira, M. Oshima, T. Sugiyama, E. Ikenaga and N. Hamada. The experiments at J-PARC were carried out under the project no. 2009A0073. The experiments at the Photon Factory and SPring-8 were performed under the approval of the Photon Factory (2008G688, 2010G655, 2009S-005 and 2011S2-003) and of the Japan Synchrotron Radiation Research Institute (2011A1624 and 2011B1710), respectively. This work was partly supported by a grant-in-aid for JST-PRESTO and KAKENHI (19052001, 19052004, 20340097).",
year = "2013",
month = feb,
day = "20",
doi = "10.1142/S0217979213300028",
language = "English",
volume = "27",
journal = "International Journal of Modern Physics B",
issn = "0217-9792",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "5",
}