TY  - BOOK
A1  - Chen, Hua
A1  - Yu, Chun
T1  - Asymptotic behaviour of the trace for schrödinger operator on fractal drums
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2001
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  - 
TY  - INPR
A1  - Chen, Hua
A1  - Yu, Chun
T1  - Asymptotic behaviour of the trace for Schrödinger operator on fractal drums
T3  - Preprint - (2001) 32 
Y1  - 2001
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-26157
ER  - 
TY  - JOUR
A1  - Liu, Chun-Yu
A1  - Ruotsalainen, Kari
A1  - Bauer, Karl
A1  - Decker, Régis
A1  - Pietzsch, Annette
A1  - Föhlisch, Alexander
T1  - Excited-state exchange interaction in NiO determined by high-resolution resonant inelastic x-ray scattering at the Ni M2,3 edges
JF  - Physical review : B, Condensed matter and materials physics
N2  - The electronic and magnetic excitations of bulk NiO have been determined using the 3A2g to 3T2g crystal-field transition at the Ni M2,3 edges with resonant inelastic x-ray scattering at 66.3- and 67.9-eV photon energies and 33-meV spectral resolution. Unambiguous assignment of the high-energy side of this state to a spin-flip satellite is achieved. We extract an effective exchange field of 89±4 meV  in the 3T2g excited final state from empirical two-peak spin-flip model. The experimental data is found consistent with crystal-field model calculations using exchange fields of 60–100 meV. Full agreement with crystal-field multiplet calculations is achieved for the incident photon energy dependence of line shapes. The lower exchange parameter in the excited state as compared to the ground-state value of 120 meV is discussed in terms of the modification of the orbital occupancy (electronic effects) and of the structural dynamics: (A) With pure electronic effects, the lower exchange energy is attributed to the reduction in effective hopping integral. (B) With no electronic effects, we use the S = 1 Heisenberg model of antiferromagnetism to derive a second-nearest-neighbor exchange constant J2 = 14.8±0.6 meV. Based on the linear correlation between J2 and the lattice parameter from pressure-dependent experiments, an upper limit of 2% local Ni-O bond elongation during the femtosecond scattering duration is derived.
Y1  - 2022
U6  - https://doi.org/10.1103/PhysRevB.106.035104
SN  - 2469-9950
SN  - 2469-9969
VL  - 106
IS  - 3
PB  - American Physical Society
CY  - Ridge, NY
ER  - 
TY  - JOUR
A1  - Hu, Ting-Li
A1  - Cheng, Feng
A1  - Xu, Zhen
A1  - Chen, Zhong-Zheng
A1  - Yu, Lei
A1  - Ban, Qian
A1  - Li, Chun-Lin
A1  - Pan, Tao
A1  - Zhang, Bao-Wei
T1  - Molecular and morphological evidence for a new species of the genus Typhlomys (Rodentia: Platacanthomyidae)
JF  - Zoological research : ZR = Dongwuxue-yanjiu : jikan / published by Kunming Institute of Zoology, Chinese Academy of Sciences, Zhongguo Kexueyuan Kunming Dongwu Yanjiusuo zhuban, Dongwuxue-yanjiu Bianji Weiyuanhui bianji
N2  - In this study, we reassessed the taxonomic position of Typhlomys (Rodentia: Platacanthomyidae) from Huangshan, Anhui, China, based on morphological and molecular evidence. Results suggested that Typhlomys is comprised of up to six species, including four currently recognized species ( Typhlomys cinereus, T. chapensis, T. daloushanensis, and T. nanus), one unconfirmed candidate species, and one new species ( Typhlomys huangshanensis sp. nov.). Morphological analyses further supported the designation of the Huangshan specimens found at mid-elevations in the southern Huangshan Mountains (600 m to 1 200 m a.s.l.) as a new species.
KW  - Morphology
KW  - Phylogenetics
KW  - Species delimitation
KW  - Taxonomy
Y1  - 2021
U6  - https://doi.org/10.24272/j.issn.2095-8137.2020.132
SN  - 2095-8137
VL  - 42
IS  - 1
SP  - 100
EP  - 107
PB  - Yunnan Renmin Chubanshe
CY  - Kunming
ER  -