Electronic properties of 
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Dash, S.; Okawa, Mario; Kajita, T.; Yoshino, T.; Shimoyama, R.; Takahashi, Kazutoshi; Takahashi, Y.; Takayanagi, Ryohei; Saitoh, T.; Ootsuki, D.; Yoshida, T.; Ikenaga, Eiji; Saini, N. L.; Katsufuji, T.; Mizokawa, T.

doi:10.1103/physrevb.95.195116

Cited by 11 publications

(3 citation statements)

References 39 publications

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“…However, the V 3d spectral distribution is rather broad in the experimental result and is not separated into V 2+ and V 3+ bands. Also the spectral weight near the Fermi level is rather large compared to the metallic phase of BaV 10 O 15 [32] and Ba 1−x Sr x V 13 O 18 [33]. Here, we speculate that the V 2+ and V 3+ components are highly mixed due to strong charge fluctuation along the face sharing bond.…”

Section: (B)mentioning

confidence: 75%

Charge correlation in V$_2$OPO$_4$ probed by hard x-ray photoemission spectroscopy

Murota,

Pachoud,

Attfield

et al. 2020

Preprint

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Electronic properties of V 2 OPO 4 have been investigated by means of hard x-ray photoemission spectroscopy (HAXPES) and subsequent theoretical calculations. The V 1s and 2p HAXPES spectra are consistent with the charge ordering of V 2+ and V 3+ . The binding energy difference between the V 2+ and V 3+ components is unexpectedly large indicating large bonding-antibonding splitting between them in the final states of core level photoemission. The V 1s HAXPES spectrum exhibits a charge transfer satellite which can be analyzed by configuration interaction calculations on a V 2 O 9 cluster. The V 3d spectral weight near the Fermi level is assigned to the 3d t 2g orbitals of the V 2+ site. The broad V 3d spectral distribution is consistent with the strong hybridization between V 2+ and V 3+ in the ground state. The core level and valence band HAXPES results indicate substantial charge transfer from the V 2+ site to the V 3+ site.

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Section: (B)mentioning

confidence: 75%

Charge correlation in V$_2$OPO$_4$ probed by hard x-ray photoemission spectroscopy

Murota,

Pachoud,

Attfield

et al. 2020

Preprint

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“…In Since the superexchange pathways for the xy, yz, and zx orbitals are all active in the face sharing V-O-V bond, the V 3+ and V 2+ sites should have the antiferromagnetic coupling in agreement with the neutron result [13]. This situation is different from the ferromagnetic coupling between the face sharing V 3+ and V 2+ in BaV 10 O 15 and related systems where the a 1g orbital is unoccupied at the V 3+ site [22][23][24].…”

Section: Resultsmentioning

confidence: 99%

V 3$d$ charge and orbital states in V$_2$OPO$_4$ probed by x-ray absorption spectroscopy

Murota,

Pachoud,

Attfield

et al. 2020

Preprint

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“…As O 1s spectral features change only slightly in the opposite direction at the lower binding edge between 300 K and 180 K, this indicates that the change between 300 K and 180 K is different from that at 120 K. The asymmetry parameter (α) is obtained with the Doniach-Sunjic function fitted to the O 1s spectra at 70, 180, 245, and 300 K, similarly adopted to O 1s in Ba 1x Sr x V 13 O 18 (Supplemental Material in ref. 31). The Doniach-Sunjic profile can be written as…”

Section: Resultsmentioning

confidence: 99%

Temperature-dependent valence state within the metallic phase of BaV10O15 probed by hard x-ray photoelectron spectroscopy

et al. 2019

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We have studied electronic properties of BaV10O15 in the intermediate-temperature phase as well as in the high-temperature metallic phase by using hard x-ray photoemission spectroscopy (HAXPES). The V 2p HAXPES show a shift in the high temperature phase between 300 K and 245 K which is similar to the shift of spectral weight near the Fermi edge. The binding energy of the O 1s HAXPES peak does not change except a slight shift of the lower binding energy edge in the opposite direction between 300 K and 180 K across the transition to the intermediate-temperature phase. This behavior is in sharp contrast to the transition to the low-temperature insulating phase where V 2p and O 1s HAXPES show dramatic shifts in the same direction. This indicates that the charge-orbital change in the intermediate-temperature phase is driven by the correlated V 3d electrons and is electronic. The V 2.5+-V 2.5+ bond ordering is related to the metallic contribution and gradually decreases with cooling from 300 K. The valence-band HAXPES show the metallic features of the pseudogap behavior near the Fermi edge in and above the intermediate-temperature phase due to V 2.5+-V 3+ charge fluctuation. The magnitude of the pseudogap increases from 300 K to 180 K in parallel with the gradual breaking of the V 2.5+-V 2.5+ bond and formation of trimers.

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Electronic properties of Ba1−xSrxV13O18

Cited by 11 publications

References 39 publications

Charge correlation in V$_2$OPO$_4$ probed by hard x-ray photoemission spectroscopy

Charge correlation in V$_2$OPO$_4$ probed by hard x-ray photoemission spectroscopy

V 3$d$ charge and orbital states in V$_2$OPO$_4$ probed by x-ray absorption spectroscopy

Temperature-dependent valence state within the metallic phase of BaV10O15 probed by hard x-ray photoelectron spectroscopy

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