Paper 86
Orbital and Charge Excitations as Fingerprints of an
Orbital-Selective Mott Phase in the Block Magnetic State of
BaFe2Se3,
N. D. Patel, A. Nocera, G. Alvarez, A. Moreo, S. Johnston, and E.
Dagotto,
ArXiv:XXXX.XXXXX(XXXX).
Item |
Date |
Description |
A(k,w) groundstate
Electron: A(k,w) orbital-a
Hole: A(k,w) orbital-a
c local operator
cdagger local operator
|
July 28, 2018 |
Figure 2a: sample inputs for orbital resolved A(k,w) for orbital
a. Orbitals 'b' and 'c' counterparts can also be done
similarly.
Step 1 - Running ground-state: ./dmrg -f AGS.inp -p 12
"nup?0,ndown?0,n?0"
Step 2 - Calculating ground-state observables: ./observe -f
AGS.inp onepoint,ss,nn
Step 3 - Calculating Electron Aa(k,w): ./dmrg -f E_Akw_a.inp
':cd.txt,:c.txt'
Step 4 - Calculating Hole Aa(k,w): ./dmrg -f H_Akw_a.inp
':cd.txt,:c.txt'
|
N(k,w) groundstate
N(k,w) orbital-a
n local operator
|
July 28, 2018 |
Figure 2c: sample inputs for orbital resolved N(k,w) for orbital
a.
Step 1 - Running ground-state: ./dmrg -f AGS.inp -p 12
"nup?0,ndown?0,n?0"
Step 2 - Calculating ground-state observables: ./observe -f
AGS.inp onepoint
Step 3 - Using the ground-state local density (<n_i>)
calculated by step 2, for each site, define operator n_i -
<n_i> (filename: n$i.txt where $i is the site label)
Step 4 - Calculating Na(k,w): ./dmrg -f Nkw_a.inp -p 12
':n$.txt'
|
Lx(k,w) groundstate
Lx(k,w) orbital-a
Lx local operator
Ly local operator
Lz local operator
|
July 28, 2018 |
Figure 2e: sample inputs for Lx(k,w). The Ly and Lz counterparts
can also be done similarly.
Step 1 - Running ground-state: ./dmrg -f LGS.inp -p 12
Step 2 - Calculating Lx(k,w): ./dmrg -f Lkw_x.inp -p 12
':Lx.txt,:Ly.txt,:Lz.txt'
|
Note
Note that in each dynamical run input file, there is a local
operator provided that looks like
----------------------------
TSPOperator=raw
RAW_MATRIX
4 4
0 0 0 0
1 0 0 0
1 0 0 0
0 1 -1 0
FERMIONSIGN=-1
JMVALUES 1 1
AngularFactor=1
----------------------------
DMRG++ engine apply this operator onto the the ground-state and the
operators that are given in the command-line arguement are measured
(For example, in command ``./dmrg -f H_Akw_a.inp
':cd.txt,:c.txt''', the cdagger and c operators are measured
in-situ). Therefore, when calculating different spectral function,
one must add the correct operator in the inputfile and give the
correct operator for the measurement.
CorrectionVectorEta=0.08
CorrectionVectorOmega=3.000
Above lines are used in the input file to specify the broadening η
and a specific energy transfer ω of a spectral function. These can
be changed by the user. Additionally, below lines are used the
specify `apply operator at site 36 in loop 0'.
TSPSites 1 36
TSPLoops 1 0
For additional help, please consider the DMRG++ manual.