@article{law_hoch_glaum_heinmaa_stern_kang_lee_whangbo_kremer_2011, title={Spin-Peierls transition in the S=1/2 compound TiPO4 featuring large intrachain coupling}, volume={83}, ISSN={["1098-0121"]}, DOI={10.1103/physrevb.83.180414}, abstractNote={We investigated the magnetic and structural properties of the quasi-one dimensional 3$d^1$-quantum chain system TiPO$_4$ ($J \sim$ 965 K) by magnetic susceptibility, heat capacity, ESR, x-ray diffraction, NMR measurements, and by density functional calculations. TiPO$_4$ undergoes two magnetostructural phase transitions, one at 111 K and the other at 74 K. Below 74 K, NMR detects two different $^{31}$P signals and the magnetic susceptibility vanishes, while DFT calculations evidence a bond alternation of the Ti...Ti distances within each chain. Thus, the 74 K phase transition is a spin-Peierls transition which evolves from an incommensurate phase existing between 111 K and 74 K.}, number={18}, journal={PHYSICAL REVIEW B}, author={Law, J. M. and Hoch, C. and Glaum, R. and Heinmaa, I. and Stern, R. and Kang, J. and Lee, C. and Whangbo, M. -H. and Kremer, R. K.}, year={2011}, month={May} }
 @article{white_lee_gunaydin-sen_tung_christen_wang_turnbull_landee_mcdonald_crooker_et al._2010, title={Magneto-optical properties and charge-spin coupling in the molecular (2,3-dmpyH)(2)CuBr4 spin-ladder material}, volume={81}, ISSN={["1098-0121"]}, DOI={10.1103/physrevb.81.052407}, abstractNote={We investigated the magnetic and optical properties of ${(2,3\text{-dmpyH})}_{2}{\text{CuBr}}_{4}$, an unusual antiferromagnetic quantum spin ladder with strong rail interactions that can be saturated in a 30 T field. This transition drives a field-induced color change, a dramatic example of charge-spin coupling in a molecular material. Spin-density calculations reveal that electronic structure is sensitive to the magnetic state because magnetic orbital character depends on the spin arrangement between adjacent ${\text{CuBr}}_{4}^{2\ensuremath{-}}$ chromophores. This finding suggests that molecular architecture and the magnetic arrangement between molecular units might be used to control magnetochromism.}, number={5}, journal={PHYSICAL REVIEW B}, author={White, J. L. and Lee, C. and Gunaydin-Sen, O. and Tung, L. C. and Christen, H. M. and Wang, Y. J. and Turnbull, M. M. and Landee, C. P. and McDonald, R. D. and Crooker, S. A. and et al.}, year={2010}, month={Feb} }
 @article{mentre_janod_rabu_hennion_leclercq-hugeux_kang_lee_whangbo_petit_2009, title={Incommensurate spin correlation driven by frustration in BiCu2PO6}, volume={80}, ISSN={["1098-0121"]}, DOI={10.1103/physrevb.80.180413}, abstractNote={The magnetic properties of BiCu2PO6 have been analyzed by means of magnetic-susceptibility and inelastic neutron-scattering measurements on powder samples by evaluating the spin-exchange interactions on the basis of density-functional calculations and by simulating the inelastic neutron scattering in terms of spin-exchange parameters. BiCu2PO6 exhibits magnetic properties described by the two-leg spin ladder with strong spin frustration along each leg chain and has a gapped quantum singlet ground state with excited magnetic states, showing an incommensurate dispersion arising from frustration.}, number={18}, journal={PHYSICAL REVIEW B}, author={Mentre, O. and Janod, E. and Rabu, P. and Hennion, M. and Leclercq-Hugeux, F. and Kang, J. and Lee, C. and Whangbo, M. -H. and Petit, S.}, year={2009}, month={Nov} }
 @article{banks_kremer_hoch_simon_ouladdiaf_broto_rakoto_lee_whangbo_2009, title={Magnetic ordering in the frustrated Heisenberg chain system cupric chloride CuCl2}, volume={80}, ISSN={["1098-0121"]}, DOI={10.1103/physrevb.80.024404}, abstractNote={We report a detailed examination the magnetic structure of anhydrous cupric chloride CuCl2 carried out by powder neutron diffraction, magnetic susceptibility and specific heat measurements on polycrystalline and single crystal samples as well as an evaluation of the spin exchange interactions by first principles density functional theory (DFT) calculations. Anhydrous CuCl2 shows one dimensional antiferromagnetic behavior and long range antiferromagnetic ordering below a Neel temperature of 23.9 K. Neutron powder and single crystal diffraction reveal that, below 23.9K, CuCl2 undergoes a phase transition into an incommensurate magnetic structure (propagation vector (1,0.2257,0.5) with a spin-spiral propagating along b and the moments confined in the bc crystallographic plane. Our DFT calculations show that the spin-spiral results from competing ferromagnetic nearest neighbor and antiferromagnetic next-nearest neighbor spin-exchange interaction along the spin chains. Implications for possible multiferroic behavior of CuCl2 are discussed.}, number={2}, journal={PHYSICAL REVIEW B}, author={Banks, M. G. and Kremer, R. K. and Hoch, C. and Simon, A. and Ouladdiaf, B. and Broto, J. -M. and Rakoto, H. and Lee, C. and Whangbo, M. -H.}, year={2009}, month={Jul} }
 @article{lee_bilderback_thomas_1991, title={Growth responses of Heptacodium miconioides to various photoperiods and day/night temperatures}, volume={116}, number={4}, journal={Journal of the American Society for Horticultural Science}, author={Lee, C. C. and Bilderback, T. E. and Thomas, J. F.}, year={1991}, pages={646} }
 @article{lee_bilderback_1990, title={Propagation of Heptacodium jasminoides Airy-Shaw by softwood and semi-hardwood cuttings}, volume={8}, number={3}, journal={Journal of Environmental Horticulture}, author={Lee, C. C. and Bilderback, T. E.}, year={1990}, pages={121} }